MIVA STUDY PACK — Solar Panel Installation Technician (English) Downloaded 2026-09-29. Free to pass on. Solar Panel Installation Technician — Lesson 1: Understanding Electricity Basics 10 minutes read OBJECTIVE: By the end of this lesson you can explain the core concepts of voltage, current, and resistance in the context of solar electricity. Electricity flows through wires like water flows through pipes. Voltage is the pressure pushing the water, current is how much water flows, and resistance is what slows the flow down. When you install solar panels, you're harnessing sunlight to push electrons through a circuit, creating usable electricity for lights, phones, and appliances. Every solar job you will ever do comes back to these three words. A panel is rated in volts and amps. A battery stores volts. A cable that is too thin adds resistance, gets hot and wastes the power your customer paid for. If you can picture water in a pipe, you can size a system correctly. - Voltage (V) — the push. Measured across two points, like across a battery's two terminals. - Current (A) — the flow. Measured through a wire, like water passing a point in the pipe. - Resistance (Ω) — the slowdown. Thin, long or corroded wire means more resistance. - Power (W) = Volts × Amps. A 12 V panel pushing 5 A gives you 60 W. [Safety first] Always wear insulated gloves, disconnect batteries before working on panels, and never work during rain or storms. A shock from a solar system can be serious — treat every wire as if it's live. PRACTICE QUESTIONS 1. What does "voltage" measure in an electrical system? A) The amount of electricity flowing B) The pressure pushing electricity through a wire C) The speed of electricity D) The cost of electricity Answer: B — Voltage is like water pressure in a pipe — it's the force that pushes electric current through a wire. Think of it like the pressure that pushes water from a tank through a hose. Higher voltage means more push, not more water. 2. A panel produces 18 volts and 5 amps. How much power is that? A) 23 watts B) 3.6 watts C) 90 watts D) 180 watts Answer: C — Power = Volts × Amps, so 18 × 5 = 90 watts. You will use this one formula on almost every site visit when you size panels, batteries and cables. ---------------------------------------- Solar Panel Installation Technician — Lesson 2: Reading Solar System Diagrams 10 minutes read OBJECTIVE: By the end of this lesson you can identify standard symbols and trace the power flow in a basic solar system diagram. A solar diagram is simply a map of where the power goes. Sunlight hits the panels, the power runs down to a charge controller, the controller feeds the battery, and the inverter turns the battery's DC power into the AC power that sockets, fridges and fans use. Every diagram you meet on a job site follows that same left-to-right story. Symbols are standard, so once you learn a handful you can read any installer's drawing. A panel is a rectangle with diagonal lines. A battery is long and short parallel lines. A fuse or breaker is a small box or squiggle sitting in the line. Arrows show the direction the current travels, and a line going down to three short bars is the earth (ground) connection. Panels wired in series (positive to negative, one after another) add their voltages together while the current stays the same — good for reaching the voltage your controller needs. Panels wired in parallel (all positives together, all negatives together) add their currents while the voltage stays the same — good when you need more amps at a low voltage. Reading a diagram means checking which of those two the drawing shows before you touch a single cable. - Panels → charge controller: DC power from the roof. - Charge controller → battery: protects the battery from over-charging. - Battery → inverter: stored DC power. - Inverter → distribution board: AC power for the customer's sockets. - Earth line: connects frames and enclosures safely to ground. [Practice habit] Before wiring anything, redraw the diagram by hand on paper and label every voltage. Five minutes of drawing prevents an afternoon of tracing faults. PRACTICE QUESTIONS 1. You wire two 12 V panels in series. What is the output voltage? A) 6 volts B) 12 volts C) 24 volts D) It depends on the battery Answer: C — Series wiring adds voltages together, so 12 V + 12 V = 24 V, while the current stays the same. Parallel wiring would have kept the voltage at 12 V and doubled the current instead. 2. In a standard diagram, what sits between the panels and the battery? A) The inverter B) The charge controller C) The distribution board D) The earth rod Answer: B — The charge controller sits between panels and battery. It regulates the incoming power so the battery is charged safely and is not damaged by over-charging on a bright day. ---------------------------------------- Solar Panel Installation Technician — Lesson 3: Sizing a Small Home System 12 minutes read OBJECTIVE: By the end of this lesson you can calculate the daily energy demand of a small household based on appliance usage. Sizing means answering one question: how much energy does this household use in a day, and how much sun can we harvest to cover it? You start with the customer's appliances, not with the panels. List every item, its watts, and how many hours a day it runs. Watts × hours gives watt-hours (Wh), and the total is the daily energy demand. Say a home runs 6 LED bulbs at 8 W for 5 hours (240 Wh), a fan at 60 W for 6 hours (360 Wh), a TV at 70 W for 4 hours (280 Wh) and phone charging at 20 W for 3 hours (60 Wh). That is 940 Wh a day. Add roughly 30% for losses in cables, the battery and the inverter, and you plan for about 1,220 Wh. Most of West Africa gets about 4 to 5 usable peak sun hours a day, and less during harmattan or heavy rains. Dividing 1,220 Wh by 4 peak sun hours gives roughly 305 W of panels — so two 165 W panels is a sensible, honest recommendation. For the battery, size for one to two days of backup and never plan to drain a lead-acid battery past half its capacity. - Step 1: List appliances, watts and daily hours. - Step 2: Add the watt-hours to get daily demand. - Step 3: Add about 30% for system losses. - Step 4: Divide by 4 peak sun hours to get panel watts. - Step 5: Size the battery for backup days, using only 50% of a lead-acid battery's rating. [Never oversell] If a customer wants to run a fridge or an air conditioner, say clearly what it will cost before quoting. An undersized system that dies in three months destroys your reputation faster than a lost sale ever will. PRACTICE QUESTIONS 1. A home uses 1,000 Wh per day. With 4 peak sun hours and no losses added, roughly what panel size is needed? A) About 100 W B) About 250 W C) About 1,000 W D) About 4,000 W Answer: B — Divide the daily energy by the peak sun hours: 1,000 Wh ÷ 4 h = 250 W of panels. In real quotes you then add roughly 30% for losses, which would take you to about 325 W. 2. Why do you only count half of a lead-acid battery's rated capacity? A) Because half the battery is always faulty B) Because the inverter uses the other half C) Because deep discharging shortens the battery's life D) Because the charge controller blocks it Answer: C — Draining a lead-acid battery below about 50% repeatedly damages the plates and cuts its life short. Sizing for a 50% depth of discharge keeps the customer's battery healthy for years. ---------------------------------------- Solar Panel Installation Technician — Lesson 4: Tools of the Trade and Site Safety 11 minutes read OBJECTIVE: By the end of this lesson you can identify essential tools for solar installation and describe critical site safety practices. A solar technician is judged by the tools in the bag before a single panel goes up. You do not need an expensive kit to start, but the few tools you own must be the right ones and must be in good condition. A cracked screwdriver handle or a multimeter with worn probes is not a small problem on a roof carrying live direct current. THE STARTER KIT - Digital multimeter — reads DC volts, amps and resistance. Your most important tool. - Insulated screwdrivers and a set of spanners for panel clamps and battery terminals. - Wire strippers and a crimping tool sized for MC4 connectors and battery lugs. - Cordless drill with masonry and metal bits for mounting rails. - Clamp meter for measuring current without breaking the circuit. - Spirit level, measuring tape and a marker for laying out rails straight. Safety gear is part of the tool kit, not an extra. Insulated gloves rated for at least 1,000 V, hard-soled shoes with grip, eye protection when drilling, and a roof harness whenever you work above one storey. Panels are heavy and awkward in wind: two people carry a panel, always. THE SITE WALK Before anything is unpacked, walk the site. Check the roof for rot, rust or loose sheets. Look for shade from trees, water tanks and neighbouring buildings, and remember that shade moves through the day. Find where the battery and inverter will live: a dry, ventilated room, never a sealed cupboard and never a bedroom. Agree the cable route with the customer before you drill a single hole. [Panels are always live] A solar panel produces voltage the moment daylight touches it. There is no switch on the panel itself. Cover panels with an opaque sheet while wiring, keep MC4 connectors capped, and never leave a bare DC cable end dangling where someone can touch it. PRACTICE QUESTIONS 1. Which single tool tells you most about what a solar system is doing? A) A spirit level B) A digital multimeter C) A cordless drill D) A measuring tape Answer: B — The multimeter reads voltage, current and resistance — the three numbers that tell you whether panels, batteries and cables are healthy. Everything else in the bag helps you mount hardware; the multimeter is how you diagnose. 2. Why must a panel be covered while you wire it? A) To keep dust off the glass B) Because it produces voltage as soon as light hits it C) Because the warranty requires it D) To stop the frame from getting hot Answer: B — A panel has no off switch. Daylight alone makes it live, so covering it with an opaque sheet is the only way to make the DC side safe while you connect it. ---------------------------------------- Solar Panel Installation Technician — Lesson 5: Mounting Panels on Different Roofs 12 minutes read OBJECTIVE: By the end of this lesson you can select appropriate mounting hardware and correctly fix solar panels to different roof types. Most homes you will work on have corrugated metal sheets on timber purlins. Some have clay or concrete tiles, and a few have flat concrete slabs. Each roof needs a different fixing, but the goal is always the same: the panel must stay put in a storm, and the roof must not leak afterwards. CORRUGATED METAL ROOFS Fix rails to the timber purlin underneath, never to the thin sheet alone. Use hanger bolts with an EPDM rubber washer, driven through the crest of the corrugation — never the valley, where rainwater runs. Seal every penetration with neutral-cure silicone or butyl tape. If you cannot feel a purlin under the sheet, do not guess: lift a sheet or check from inside the ceiling. TILE AND FLAT CONCRETE ROOFS - Tiles: lift the tile, bolt a roof hook to the rafter, then lay the tile back over the hook. Grind a small notch in the tile so it sits flat and does not crack. - Concrete slab: use a ballasted or chemically anchored frame; drill, clean the hole, then use an anchor bolt rated for the load. - Every roof type: leave at least 10 cm of air gap under the panel so it can cool. A hot panel loses output. ANGLE AND DIRECTION In West Africa, panels face south if you are north of the equator, and the tilt is roughly your latitude, with a practical minimum of about 10 degrees. That minimum matters: a panel laid nearly flat collects harmattan dust and never washes clean in the rain. Keep rows out of each other's shadow, and keep every panel clear of the water tank's shadow in the late afternoon. [Torque, then check again] Tighten clamps to the manufacturer's torque — hand-tight is not enough and over-tightening cracks the frame. Come back after the first heavy rain to re-check the fixings and the seals. That free follow-up visit is what gets you referrals. PRACTICE QUESTIONS 1. Where should a hanger bolt go on a corrugated metal roof? A) In the valley, where the sheet is flat B) Through the crest of the corrugation, into the purlin C) Anywhere, as long as silicone is used D) Through the ridge cap at the top Answer: B — Rainwater runs down the valleys, so a hole there will leak sooner or later. The crest stays above the water, and the bolt must reach the timber purlin — the thin sheet alone cannot hold a panel in wind. 2. Why keep an air gap under a mounted panel? A) So birds can nest safely B) To make the panel look neater C) Because a cooler panel produces more power D) To store cables Answer: C — Panel output falls as cell temperature rises. An air gap of around 10 cm lets air move underneath and carry heat away, protecting output on the hottest afternoons. ---------------------------------------- Solar Panel Installation Technician — Lesson 6: Wiring Charge Controllers and Batteries 12 minutes read OBJECTIVE: By the end of this lesson you can correctly wire charge controllers and batteries, following safe connection order. Wiring order is not a preference — it is a safety rule. Connect the battery to the charge controller first, then the panels, and only then any DC loads. Most controllers read the battery voltage to decide whether they are working with a 12 V or 24 V system. Give them panel power first and they can be damaged or set themselves up wrongly. PWM OR MPPT A PWM controller is cheap and simple, but it drags panel voltage down to battery voltage and wastes the difference. An MPPT controller converts that extra voltage into extra current and typically harvests 20 to 30 percent more energy, especially on cool bright mornings and when the panel string voltage is well above battery voltage. On any system above roughly 300 W, MPPT usually pays for itself. SERIES, PARALLEL AND CABLE SIZE - Series (positive to negative) adds voltage and keeps current the same — good for MPPT and for long cable runs. - Parallel (positive to positive) adds current and keeps voltage the same — needs thicker cable. - Never mix panels of different wattage or age in one string; the weakest panel pulls the whole string down. - Size battery cables generously and keep them short. Aim to lose less than 3% of voltage in any run. - Fit a correctly rated fuse or breaker on the battery positive, as close to the terminal as possible. Battery banks must be matched: same chemistry, same capacity, same age. Lead-acid banks need a ventilated space because they release hydrogen while charging. Lithium (LiFePO4) costs more up front, tolerates deeper discharge, and lasts far longer — increasingly the honest recommendation when the customer's budget allows it. [Reverse polarity kills controllers] Check positive and negative twice with the multimeter before every connection. A reversed battery lead can destroy a charge controller in a second, and no warranty covers it. Red to positive, black to negative, every time. PRACTICE QUESTIONS 1. What is the correct connection order for a charge controller? A) Panels, then battery, then loads B) Battery, then panels, then loads C) Loads, then panels, then battery D) The order does not matter Answer: B — The controller reads the battery first to detect system voltage and to have somewhere safe to send incoming power. Battery, then panels, then loads — and disconnect in the reverse order. 2. Wiring two 18 V panels in series gives you: A) 36 V at the same current B) 18 V at double the current C) 9 V at double the current D) 36 V at double the current Answer: A — Series adds voltage and leaves current unchanged: 18 V + 18 V = 36 V. Parallel would do the opposite — same 18 V, double the current — and would need thicker cable. ---------------------------------------- Solar Panel Installation Technician — Lesson 7: Installing and Testing an Inverter 12 minutes read OBJECTIVE: By the end of this lesson you can install an inverter and perform a systematic test to confirm its correct operation. The inverter turns the battery's DC into the 230 V AC that sockets, fridges and fans expect. It is the part of the system the customer actually sees working, and it is the part most often blamed when something goes wrong — so install it carefully and test it in front of them. CHOOSING AND PLACING IT - Pure sine wave for anything with a motor or a sensitive board: fridges, fans, TVs, laptops, medical devices. - Modified sine wave is cheaper but hums, runs motors hot and can damage electronics. Avoid it for a home system. - Size for the running load, then check the surge rating: a fridge compressor can pull three times its running watts for a moment as it starts. - Mount it on a wall, vertical, at least 20 cm clear on every side, out of direct sun and away from the battery gases. COMMISSIONING TEST Test in a fixed order so nothing is missed. Measure battery voltage at rest. Switch the inverter on with no load and confirm it reports the right voltage and no alarm. Add one small load, such as a lamp, and confirm it runs steadily. Add the biggest load the customer owns and watch battery voltage: a large sag means cables are too thin or the battery bank is too small. Finally, check the earth connection and confirm the AC output breaker trips when tested. [Never back-feed the grid] An off-grid inverter must never be wired so its AC output can reach the utility line. Back-feeding can electrocute a lineman working on what they believe is a dead cable. Use a proper changeover switch or transfer switch, and confirm the two supplies can never be connected at the same time. PRACTICE QUESTIONS 1. Why is pure sine wave preferred for home systems? A) It is always cheaper B) It runs motors and electronics safely C) It charges the battery faster D) It needs no earth connection Answer: B — Pure sine wave matches the shape of grid power, so compressors, fans and electronic boards run cool and last. Modified sine wave is cheaper but makes motors hum and heat, and shortens the life of sensitive devices. 2. Battery voltage drops sharply the moment a big load starts. What should you suspect first? A) The panels are dirty B) The inverter is set to the wrong language C) Thin or long battery cables, or an undersized battery bank D) It is normal and needs no action Answer: C — A large sag under load points to resistance in the DC path or a bank too small for the surge. Check cable size and length and the battery's condition before you blame the inverter. ---------------------------------------- Solar Panel Installation Technician — Lesson 8: Fault-Finding with a Multimeter 12 minutes read OBJECTIVE: By the end of this lesson you can use a multimeter to diagnose common faults in a solar power system. Fault-finding is what separates an installer from a technician. The method never changes: start at the panels and work forward to the load, measuring at every junction, and stop at the first point where the number is wrong. Guessing costs you parts and reputation; measuring costs you five minutes. THE FOUR MEASUREMENTS - Open-circuit voltage (Voc) at the panel, disconnected: should be close to the sticker value in good sun. Very low means shade, a broken cell or a bad connector. - Voltage at the controller input: much lower than Voc means a cable or connector fault between roof and controller. - Battery resting voltage, one hour after charging stops: 12.7 V is full for lead-acid, 12.0 V is roughly empty. Below 11.8 V under no load, suspect the battery. - Current with a clamp meter, in the sun at midday: far below expected means shading, dirt or a failing panel. COMMON FAULTS YOU WILL ACTUALLY MEET In the field, most complaints come down to a small handful of causes: a loose or corroded battery terminal, a badly crimped MC4 connector letting water in, dust and harmattan film on the glass, a tree branch that has grown since installation, a tired battery that will no longer hold charge, or a blown fuse nobody thought to check. Look for those six before you condemn any expensive component. [Write it down] Record the readings for every system you commission and keep them with the customer's file. When they call in a year, comparing today's numbers against installation day tells you what changed in minutes — and shows the customer you are a professional. PRACTICE QUESTIONS 1. A panel's open-circuit voltage reads well below the sticker value in bright sun. What is the most likely cause? A) The battery is full B) Shading, a damaged cell or a faulty connector C) The inverter is switched off D) The multimeter is set to AC volts Answer: B — Voc barely changes with sunlight strength, so a low reading in good sun points to a physical problem: shade across the panel, a damaged cell string or a bad connector. (Do check your meter is on DC volts first.) 2. A lead-acid battery rests at 11.7 V one hour after charging stopped. What does that suggest? A) It is fully charged B) It is deeply discharged or failing C) The panels are oversized D) The inverter is too small Answer: B — A healthy lead-acid battery rests near 12.7 V when full and about 12.0 V when empty. Sitting at 11.7 V after charging means it is very low or no longer holding charge — test it under load before replacing anything else. ---------------------------------------- Solar Panel Installation Technician — Lesson 9: Maintenance Visits and Cleaning Schedules 11 minutes read OBJECTIVE: By the end of this lesson you can develop a maintenance schedule and perform routine cleaning for installed solar systems. The money in solar is not only in the installation. An installer earns once; a maintenance technician earns every quarter, from the same customer, for years. A system you installed in Tamale or Kumasi will lose output slowly — dust on the glass, a loose terminal, a battery drying out — and nobody will notice until the lights go off one evening. Your job is to catch the drift before the customer feels it. WHAT A VISIT ACTUALLY COVERS - Clean the panel glass with water and a soft cloth or squeegee, early morning or late evening only. - Check every mounting bolt and clamp by hand — harmattan wind and roof movement work them loose. - Open the combiner or junction box and look for heat marks, insect nests and greenish corrosion. - Measure open-circuit voltage of each string and compare with the numbers you wrote at commissioning. - Check battery terminal voltage, top up flooded cells with distilled water, and clean off any white sulphate crust. - Read the inverter and charge controller error log, then note today's production figure in the logbook. Cleaning frequency depends on where the system sits. A rooftop in a coastal town with regular rain may only need a wash every three months. A site near a laterite road, a cement yard or a busy market can lose fifteen to twenty-five per cent of its output in a single dusty month. During harmattan, plan monthly cleaning and tell the customer why. Never clean panels in the middle of a hot day: cold water on hot glass can crack a cell, and the roof itself is dangerous in that heat. SELLING THE SERVICE PLAN Offer a written plan rather than waiting for a breakdown call. A simple structure works: four visits a year for a household system, priced at roughly the cost of one day's labour per visit, with cleaning, tightening, testing and a written report included, and parts charged separately. Give the customer a copy of the logbook page every time. That page — with dates, voltages and the production figure — is what makes a customer renew, and it is also what protects you when something fails that you did not touch. [Baseline numbers are your evidence] On the day you commission a system, write down string voltage, battery resting voltage and midday production. Every future visit compares against that baseline. A string that read 38 V at handover and reads 19 V today has lost one panel or one connection — you know that in thirty seconds because you wrote the first number down. PRACTICE QUESTIONS 1. When is the right time of day to wash solar panels? A) Midday, when the sun dries them fastest B) Early morning or late evening, while the glass is cool C) Any time, as long as you use hot water D) Only during rainfall Answer: B — Cold water on glass that has been baking all day causes thermal shock and can crack cells. Cool glass in the early morning or evening is safe, and the roof is safer to walk on too. 2. Why do you record string voltage and production on commissioning day? A) The manufacturer requires it for the warranty B) It gives you a baseline to compare against on every maintenance visit C) It sets the price of the maintenance contract D) It tells you how many panels to order next time Answer: B — Without a baseline, a weak system looks normal. With one, a drop in string voltage or daily production points you straight to the failed panel, connection or battery instead of guessing. ---------------------------------------- Solar Panel Installation Technician — Lesson 10: Quoting Jobs and Handling Customers 12 minutes read OBJECTIVE: By the end of this lesson you can prepare a clear, written quote for a solar installation and explain system benefits to customers. You can wire a perfect system and still lose money on it. The technicians who last are the ones who quote properly, explain clearly, and get paid on time. A quote is not a guess shouted over the phone — it is a short written document that protects both of you, and writing one takes fifteen minutes. BUILDING THE PRICE - Equipment at your real buying price: panels, battery, inverter, charge controller, cable, breakers, mounting rails, connectors. - Add ten per cent on equipment for breakage, wrong-size fittings and price movement between quote and purchase. - Labour by the day, counting travel days honestly — two technicians for two days is four labour days, not two. - Transport: fuel or fare, plus the cost of getting a heavy battery up to the site. - Your margin on top, not hidden inside the equipment line. Twenty to thirty per cent is normal for small jobs. Write the quote in plain language with the system size at the top: for example, 'a 1.5 kW system with 3 kWh of battery storage, enough to run six lights, two fans, a TV and phone charging for about five hours after dark'. Customers do not buy watts; they buy the fan running at night. State clearly what is not included — rewiring the house, a new roof sheet, a fence for the battery box — because that is where arguments start. PAYMENT AND EXPECTATIONS Take a deposit that covers the equipment before you buy anything: sixty to seventy per cent is standard, with the balance on the day the system is tested and handed over. Never fund a customer's equipment out of your own pocket. Put the payment terms, the warranty on your workmanship — six to twelve months is fair — and the manufacturer warranties on the same page as the price. At handover, spend twenty minutes teaching. Show the customer the main switch, the battery state-of-charge display, what the warning lights mean, and the two or three loads they must never plug in — a welding machine or a big fridge on a small inverter will destroy it. Write your phone number on a sticker beside the inverter. Half of the callouts you will receive are not faults at all; they are a customer who was never shown the switch. [Do not compete on price alone] There will always be someone quoting less by using thin cable, a car battery instead of a deep-cycle one, or no breakers. That job will fail within a year and the customer will remember the trade, not the man. Quote the honest number, show the specification line by line, and explain the difference. Your reputation in one town is your whole market. PRACTICE QUESTIONS 1. What should a deposit on a solar job normally cover? A) Nothing — collect all money at the end B) Only your labour C) The cost of the equipment, so you never buy stock with your own money D) Ten per cent, as a goodwill gesture Answer: C — Equipment is the largest part of the bill. A deposit of sixty to seventy per cent before purchase means you are installing the customer's equipment, not financing it, and the balance on handover keeps you motivated to finish and test properly. 2. Why explain the system in loads rather than in watts? A) Watts are inaccurate B) Customers judge the system by what it runs, so it prevents disappointment later C) It lets you charge a higher price D) Regulations require it Answer: B — 'Six lights, two fans and a TV for five hours after dark' is a promise the customer can check. It sets honest expectations, and it makes clear why plugging in a fridge later is not covered. ---------------------------------------- Solar Panel Installation Technician — Lesson 11: Rooftop and High-Voltage Safety for Solar Installers 9 minutes read UNDERSTANDING SOLAR SITE HAZARDS Working as a solar technician is rewarding, but it brings real physical dangers. You are dealing with height, direct sunlight, heavy panels, and direct current (DC) electricity. Unlike standard home appliances that use alternating current (AC), solar panels produce high-voltage DC whenever light hits them. Safety is not about being afraid of the equipment. Safety is about following standard procedures so you can complete your work without harm and return home safe every day. ROOFTOP WORK AND FALL PREVENTION Rooftops in West Africa vary widely. You will work on metal zinc sheets, concrete roofs, and clay tiles. Roofing materials get extremely hot during midday, and zinc sheets can crack or slip under heavy loads. - Always inspect your ladder before climbing. Tie the top of the ladder to a secure roof fixing so it cannot slip sideways. - Wear a safety harness attached to a strong anchor point when working near roof edges or steep pitches. - Never carry a solar panel up a ladder alone. Use a pulley rope system or pass panels up with a partner standing on secure staging. - Avoid working on zinc roofs during sudden rain showers. Wet metal roof sheets become slippery as ice. [DC Shock Hazard Warning] Solar panel strings can generate over 300 Volts DC even on cloudy days. Direct current causes continuous muscle contraction, making it impossible to let go of live wires. Never touch bare DC conductors. Always use an insulated multimeter to check voltage before handling cables. BATTERY AND CHEMICAL SAFETY Solar storage batteries store massive energy in small boxes. Lead-acid batteries contain corrosive sulfuric acid and produce explosive hydrogen gas during charging. Lithium-ion batteries can catch fire if short-circuited or punctured. - Keep battery rooms ventilated to prevent dangerous gas buildup. - Never smoke or ignite flames near charging batteries. - Remove ring jewelry, metal watches, and wristbands before wiring battery terminals. A metal ring across battery terminals can melt in seconds and burn your finger severely. [Try this today] Locate a safety harness or a sturdy extension ladder. Practice setting up the ladder at a safe 4-to-1 angle (for every 4 meters of height, set the base 1 meter out from the wall). Check the feet for worn rubber. PRACTICE QUESTIONS 1. Why is DC electricity from solar strings especially dangerous during installation? A) It turns off automatically when touched. B) It causes continuous muscle contraction, making it hard to let go of a live wire. C) It only shock you if you wear rubber shoes. D) It carries no voltage until connected to an inverter. Answer: B — High DC voltage locks your muscles when touched, preventing your hand from pulling away. Always test wires with a multimeter first. 2. What should you do before touching any DC wiring on a solar array during the day? A) Splash water on the panels to cool them down. B) Touch the positive wire first to test for heat. C) Measure the voltage with a properly rated multimeter to confirm status. D) Short the positive and negative wires together to empty the charge. Answer: C — Always measure voltage with a digital multimeter rated for high DC voltage before touching solar panel wires. ---------------------------------------- Solar Panel Installation Technician — Lesson 12: Finding Solar Jobs with WhatsApp Business and Local Networks 8 minutes read HOW SOLAR TECHNICIANS FIND WORK Clients looking for solar installations do not look at newspaper advertisements. They ask trusted neighbors, talk to local electricians, or look at work shared on social media. As a solar installer in Lagos, Accra, or Lomé, building local connections is your best way to secure steady jobs. You do not need an expensive office or website to get started. A simple smartphone with WhatsApp Business and good work habits is enough to start finding contracts. SETTING UP WHATSAPP BUSINESS FOR SUCCESS WhatsApp Business is a free tool that turns your phone number into a clear professional storefront. Most of your clients already use WhatsApp every day. - Set a clean profile picture showing you in work clothes or holding clean tools near an installation. - Fill out the business description with your location, services offered (such as solar sizing, roof mounting, battery wiring, or maintenance), and service hours. - Use the Catalog feature to add photos of 3 to 5 past projects or practice setups with short prices or descriptions. - Set up Quick Replies for common client questions, such as listing the information you need before providing a site audit. NETWORKING IN LOCAL MARKETS AND TRADE GROUPS Subcontracting for senior technicians or larger solar firms is one of the fastest ways to start earning money. Senior installers often need reliable assistants during busy seasons. - Join local electrical and renewable energy installer groups on WhatsApp and Facebook. - Visit major electrical markets (like Alaba in Lagos or Opera Square in Accra). Introduce yourself to component sellers. Dealers often recommend installers to buyers who need help. - Always show up on time when assisting a senior tech. Reliability gets you invited back for the next project. [Try this today] Download WhatsApp Business. Add 3 clear photos of your practice work, neat trunking, or panel mounting to your profile catalog. Write a short headline like 'Reliable Solar & Inverter Installations'. PRACTICE QUESTIONS 1. What is the main benefit of using the Catalog feature on WhatsApp Business? A) It gives you free solar components from suppliers. B) It lets potential clients see clean photos of your past installations quickly. C) It automatically installs solar panels for clients. D) It replaces the need to hold safety equipment. Answer: B — A WhatsApp Business catalog works as a digital portfolio that prospective clients can view directly on their phones. 2. How can electrical market dealers help you find solar installation work? A) They pay you a fixed monthly salary regardless of work. B) They recommend installers to clients who buy panels and inverters at their shops. C) They give free solar panels to anyone who signs up. D) They test your electrical tools for safety free of charge. Answer: B — Dealers often get asked by customers for reliable installers. Building a polite relationship with shop owners leads to job referrals. ---------------------------------------- Solar Panel Installation Technician — Lesson 13: Pricing Solar Projects and Avoiding Scams 9 minutes read STRUCTURING YOUR INSTALLATION PRICING Knowing what to charge for a solar installation can be tricky when starting out. If your price is too high, clients will hire someone else. If your price is too low, you will work hard, buy supplies out of pocket, and end up losing money. Solar installers usually charge in one of two ways: a flat labor fee based on system size (for example, per panel or per inverter capacity) or a daily rate for labor combined with material costs. BREAKING DOWN AN INSTALLATION QUOTE When preparing a price estimate for a home system (such as a 1.5kVA or 3kVA inverter with two batteries), divide your bill into clear sections so the client understands what they are paying for: - Component Costs: Solar panels, inverter, batteries, charge controller, and roof rails. - Balance of System (BOS) Costs: Circuit breakers, surge protectors, solar cables, trunking pipes, and lugs. - Labor Fee: Your charge for designing, mounting, wiring, and testing the system. - Transport Fee: Tro-tro, taxi, or haulage costs to move heavy batteries and panels to the installation site. [Avoiding Payment Scams] Never buy expensive solar components with your own cash based on a client's verbal promise to pay later. Always request an upfront deposit (usually 60% to 70%) to cover materials before purchasing equipment for a client's project. IDENTIFYING FAKE SOLAR HARDWARE Scammers sell fake or downgraded components in many local markets. Installing bad components harms your professional reputation even if you did not make the components yourself. - Fake Solar Panels: Check the frame quality and weight. Cheaper fake panels sometimes have painted labels showing 300W when the actual cell area only produces 150W. - Relabeled Batteries: Scammers take used lead-acid batteries, spray paint the covers, and paste new brand stickers over old text. Inspect battery casings for scratches or worn terminals. - Thin Copper Cables: Ensure cables match the current rating. Copper-coated aluminum (CCA) cable gets hot and causes voltage drops under heavy load compared to pure copper wire. [Try this today] Calculate your full daily rate. Write down how much money you need to cover food, transport, tool wear, and basic income for a full 8-hour day of installation work. PRACTICE QUESTIONS 1. Why should you demand a material deposit from a client before buying equipment? A) Because clients do not respect installers who work for free. B) To avoid spending your own savings on materials if the client cancels or refuses to pay. C) Because solar suppliers only accept cash from property owners. D) To pay taxes to local market authorities. Answer: B — An advance deposit protects your personal money from being trapped in materials if a customer changes their mind. 2. What is a common sign of a fake or relabeled solar battery in the market? A) The battery comes packed in a wooden crate. B) The terminals show signs of previous scratches or wear under a fresh coat of paint. C) The battery is heavier than standard models. D) The battery has a printed user manual inside the box. Answer: B — Scammers refurbish old batteries with fresh paint and stickers. Worn or scratched terminals under fresh paint are a warning sign. ---------------------------------------- Solar Panel Installation Technician — Lesson 14: Building Your Solar Installer Portfolio 8 minutes read WHY PROOF OF SKILL MATTERS Solar systems are expensive investments for homeowners and small business owners in West Africa. A basic setup costs hundreds of thousands of Naira or thousands of Cedis. Clients want to be completely sure you will not damage their roof or burn out their appliances. Showing potential clients clear visual proof of your previous tidy installations creates immediate trust, even if you are early in your career. WHAT MAKES A GREAT SOLAR PORTFOLIO You do not need hundreds of completed projects. A simple photo collection of 2 or 3 neatly finished jobs or practice boards shows you take pride in your work. - Clean Roof Arrays: Take photos showing solar panels lined up straight on the roof with hidden wires secured to the frame. - Tidy Distribution Boards: Take close-up photos of distribution boxes showing straight trunking, clean wire bends, and properly labeled circuit breakers. - Orderly Battery Banks: Photograph battery banks with rubber terminal caps installed and neat interconnecting cables. - Inverter Display Screenshot: Capture photos of inverter screens running properly and showing active charging under full sunlight. COLLECTING CLIENT REFERENCES A happy client's words are often more convincing than photos. When you finish a job, follow these steps to turn that success into future work: - Call or visit the client 7 days after installation to check if the system is meeting their daily power needs. - Politely ask: 'Are you satisfied with the installation work? Would you mind giving me a short 2-sentence recommendation on WhatsApp?' - Save text testimonials or audio voice notes from satisfied clients (with their permission) to share with future prospective customers. [Try this today] Take 3 clear photos of an electrical board, battery connection, or component wiring you completed. Make sure the lighting is bright and clean away any dust or leftover wire trimmings before snapping the picture. PRACTICE QUESTIONS 1. Which photo shows high-quality craftsmanship in a solar installer's portfolio? A) Loose wires hanging across a corrugated roof sheet. B) Straight, labeled circuit breakers inside neat cable trunking. C) A battery bank with bare, uncovered terminal connections. D) A solar panel propped up loosely against a tree. Answer: B — Neat cable trunking and clear labeling show attention to safety, detail, and professional standards. 2. What is the best time to ask a solar client for a written reference or voice note? A) Before you begin mounting panels on their roof. B) A few days after commissioning, once the system is working smoothly. C) Six months after moving to another city. D) While negotiating your material deposit fee. Answer: B — Following up a few days after installation lets the client experience the working system, making them happy to give a positive review. ---------------------------------------- Solar Panel Installation Technician — Lesson 15: Build Your Professional Profile 10 min read OBJECTIVE: Set up a simple, honest professional presence online so employers and customers can find and trust you. Before someone hires you or buys from you, they often look you up. A professional profile is simply a clean, honest page that answers three questions: who are you, what can you do, and how can someone reach you? You do not need to be famous or have a computer. A phone and one good photo are enough to start. START WITH WHAT IS FREE - WhatsApp Business — free app. Add your trade, working hours, location and a short catalogue of your work or services. Many customers in West Africa will find you here first. - Google Business Profile — free. If you have a shop, workshop or stall, this puts you on Google Maps so people nearby can find you. - LinkedIn (free Basic account) — useful if you want office, NGO or company work. Add a clear photo, your trade or skill, and two or three lines about what you have done. - Local job and trade groups — Facebook and WhatsApp groups for your town or trade are where many real opportunities are shared first. You do not need all four on day one. Pick the one where your customers or employers actually are. A tailor or caterer may get more from WhatsApp Business and local groups; an IT support learner may need LinkedIn first. Add the others over time. WHAT MAKES A PROFILE TRUSTWORTHY - A real photo of you — face visible, plain background, neat clothing. No sunglasses, no filters. - Your real name, written the same way everywhere. - One honest sentence about what you do: 'I install and repair solar home systems in Hohoe.' - Proof: photos of finished work, a certificate, or a short quote from a happy customer. - A phone number or WhatsApp link that actually works. [Protect yourself] Never pay anyone who promises to 'verify' your profile or guarantee you a job for a fee. Real platforms like LinkedIn, WhatsApp Business and Google Business Profile are free to set up. Anyone asking for money to list you is likely a scammer. [Try this today] Write your one honest sentence — who you are and what you do — and save it in your notes. You will reuse it in every profile, CV and introduction from now on. PRACTICE QUESTIONS 1. Which of these is free to set up and puts your workshop on Google Maps? A) A paid business directory B) Google Business Profile C) A printed flyer D) A website you pay a developer for Answer: B — Google Business Profile is free and places your business on Google Maps and Search, so people nearby can find you. You only need a phone and your business details. 2. What is the most important quality of a professional profile photo? A) It was taken by a professional photographer B) It uses an attractive filter C) Your face is clearly visible and you look neat D) It shows you with expensive items Answer: C — Employers and customers want to see a real, trustworthy person. A clear, neat photo with a plain background builds more trust than any filter or expensive backdrop. ---------------------------------------- Solar Panel Installation Technician — Lesson 16: Write Your Goals and Plan for Obstacles 10 min read OBJECTIVE: Turn a wish into a written goal, review it weekly, and use if-then plans to handle the obstacles that usually stop you. A goal that stays in your head is a wish. A goal written down, with a date and a next step, is a plan. Research on how people actually change their behaviour keeps finding the same thing: people who write their goals down, check them regularly, and decide in advance what to do when things go wrong are far more likely to finish what they start. WRITE IT DOWN, THE PRACTICAL WAY - One goal at a time. 'Finish the solar course by 30 November' beats five vague wishes. - Make it checkable. You should be able to say 'done' or 'not done' — not 'I tried my best'. - Give it a date. A goal without a date quietly becomes 'someday'. - Write the very next small step. Not 'get a job' but 'message two hardware shops on Saturday morning'. - Keep it where you will see it — a notebook, a note on your phone, or paper on the wall. THE WEEKLY REVIEW — 15 MINUTES THAT CHANGE EVERYTHING Pick one fixed moment each week — Sunday evening works well for many people. Ask yourself three questions: What did I finish this week? What got in my way? What is my next step for the coming week? Write the answers down. This small habit catches problems while they are still small, and it reminds you that you are moving, even when progress feels slow. IF-THEN PLANS: DECIDE BEFORE THE OBSTACLE ARRIVES Most plans fail at the same predictable moments: the data bundle runs out, a friend invites you out on study night, rain cancels the job you planned. An if-then plan is a decision you make now, so a hard moment does not require willpower later. The format is simple: 'IF [obstacle happens], THEN I will [specific action].' - IF my data finishes, THEN I will study from my downloaded offline lessons instead. - IF it rains on the day I planned to visit shops, THEN I will call them instead and visit the next day. - IF I feel too tired to study at night, THEN I will do just 10 minutes — starting is the hard part. - IF a customer delays payment, THEN I will send one polite reminder after three days, not argue. [A note on visualisation] Imagining your goal can help — but picture the steps, not just the reward. Instead of only dreaming about the certificate on your wall, picture yourself opening the lesson, answering the quiz, and messaging the customer. Picturing the process prepares you; picturing only the prize can actually relax you into doing nothing. [Try this today] Write one goal with a date, then write two if-then plans for the obstacles most likely to stop you. Keep them somewhere you will see this week. PRACTICE QUESTIONS 1. What makes a goal 'checkable'? A) It is written in English B) You can clearly say whether it is done or not done C) Other people approve of it D) It is ambitious enough to impress people Answer: B — A checkable goal has a clear finish line: 'finish 8 lessons by Friday' can be marked done or not done. 'Do my best' cannot — and vague goals are easy to quietly abandon. 2. Your study night arrives and your data bundle has run out. What does a good if-then plan do? A) It forces you to buy more data immediately B) It tells you to skip studying until next week C) It gives you a decision you made in advance, like switching to your downloaded offline lessons D) It punishes you for not planning better Answer: C — An if-then plan removes the need for willpower in the moment: you decided earlier that IF data runs out, THEN you study offline. The decision is already made, so you just follow it. ---------------------------------------- Solar Panel Installation Technician — Lesson 17: Introduce Yourself in 30 Seconds 8 min read OBJECTIVE: Prepare and practise a short, confident self-introduction you can use with employers, customers and new contacts. Many capable people miss opportunities because they freeze when someone asks 'So, what do you do?' A self-introduction is a short, prepared answer — about 30 seconds — that you have practised until it feels natural. It is not showing off. It is simply making it easy for people to understand how you can help them. THE THREE-PART SCRIPT - Who you are: your name and your trade or skill. 'My name is Amina. I am a trained pharmacy assistant.' - What you can do: one or two concrete things, with proof if you have it. 'I have completed training in dispensing support and stock management, and I helped in a busy pharmacy for three months.' - What you are looking for: say it clearly. 'I am looking for a position in a pharmacy or clinic in this area.' or 'I take catering orders for events of up to 100 people.' Put together, it sounds like this: 'Good morning, my name is Kofi. I am a solar technician — I have finished certified training in home solar installation, and I have already installed systems for three families in this town. I am looking for more customers, and I also do repairs and maintenance. Here is my number.' Thirty seconds, and the listener knows exactly what you offer. MAKE IT YOURS - Adjust the ending for the listener: a customer hears what you sell; an employer hears what job you want; a contact hears how they can help you. - Practise out loud, not in your head — say it to a friend, a mirror, or your phone's voice recorder, five times. - Keep it honest. A small true claim beats a big exaggerated one that falls apart at the first question. - End with a way to reach you: your number, your WhatsApp, or where your shop is. [For shy learners] Feeling nervous is normal and does not mean you are bad at this. Preparation is the cure: a practised script means you never have to invent sentences while nervous. Start by using it in low-pressure moments — with a neighbour, then a shopkeeper — before the big interview or the important customer. [Try this today] Write your three-part introduction in your notes, then say it out loud three times. Use it once this week with a real person. PRACTICE QUESTIONS 1. What are the three parts of a good 30-second introduction? A) Your family background, your education, your hobbies B) Who you are, what you can do, what you are looking for C) Your salary expectation, your location, your age D) Your problems, your needs, your complaints Answer: B — The script answers the three questions every listener has: who is this person, what can they do for me, and what do they want? Keep it short, honest and practised. 2. What is the best way to prepare your introduction? A) Memorise a long speech about your whole life B) Wait for inspiration in the moment C) Practise a short script out loud several times before you need it D) Copy someone else's introduction word for word Answer: C — Saying it out loud — to a friend, mirror or voice recorder — is what makes it feel natural under pressure. A short, honest, practised script beats both improvisation and a long memorised speech. ---------------------------------------- GLOSSARY (PCM) Voltage: di push wey dey inside di wire Current: di amount of electricity wey dey flow Resistance: wetin dey slow di electricity down Inverter: machine wey turn battery power to house current Charge controller: di thing wey dey control how battery take charge Multimeter: meter wey you take measure volts and amps GLOSSARY (HA) Voltage: ƙarfin turawa na wutar lantarki Current: yawan wutar da ke gudana Resistance: abin da ke hana gudanar wuta Inverter: na'urar da ke juya wutar batir zuwa wutar gida Charge controller: na'urar da ke sarrafa cajin batir Multimeter: na'urar auna wuta Get the full app: https://miva-skillsnav.lovable.app