Punjab PSEB Sr. Sec. NSQF Electronics (Solar Panel Installation Technician) study plan

Define solar irradiance, air mass, and standard test conditions (STC: 1000 W/m², 25°C, AM1.5) and compute the effect of temperature on module power using a given temperature coefficient.

Interpret a basic I-V curve by labeling Voc, Isc, Vmp, Imp, and Pmax and calculating fill factor from those values.

Apply Ohm's law and series/parallel rules to calculate voltage, current, and power in a two-module string and a two-string parallel array.

Distinguish cell, module, and array terminology and state typical voltage/current relationships when cells are connected in series versus parallel.

Calculate module efficiency from nameplate area and STC power and compare two modules of different efficiency.

Compare monocrystalline, polycrystalline, and thin-film modules on efficiency range, temperature coefficient, low-light behavior, and typical applications, and select a suitable type for a given roof constraint.

Read a module datasheet and extract Voc, Isc, Vmp, Imp, Pmax, temperature coefficients, maximum series fuse rating, and system voltage rating, then explain how each affects system design.

Identify common module defects (hot spots, micro-cracks, PID, snail trails, delamination, bypass-diode failure) from written descriptions and state one field check for each.

Perform a load assessment for a small off-grid home by listing appliances, daily watt-hours, and peak watts, then size a battery bank in Ah at a stated depth of discharge and autonomy days.

Calculate array tilt for a given latitude and explain how orientation and shading affect daily energy yield.

Size DC cable for a given array current and one-way run using a voltage-drop limit (e.g., 2%) and select the next standard cross-section.

Size an inverter for a given load profile by checking continuous VA, surge requirement, and DC input voltage window.

Describe the purpose and placement of a combiner box, string fuses, DC isolator, and junction box in a rooftop system.

Explain correct MC4 connector crimping, mating, and polarity checks, and list three causes of connector overheating.

Draft a cable routing and dressing plan that separates DC and AC cables, uses UV-rated conduit, and provides service loops and drip loops.

Select roof versus ground mounting and specify rail, clamp, and anchor spacing for a given module layout, explaining how wind load and roof type influence the choice.

Describe safe module handling, lifting, and temporary storage to prevent micro-cracks and glass breakage.

List the PPE required for rooftop PV work (helmet, harness, gloves, footwear, eye protection) and state when each is mandatory.

Explain a lockout/tagout procedure for isolating a PV array and inverter before mechanical or electrical work.

Outline first aid for electrical shock and fall arrest rescue, including the order of actions and when not to touch a casualty.

Demonstrate on paper the correct use of a multimeter to measure Voc, a clamp meter to measure Isc or operating current, and an insulation tester to check DC cable insulation resistance.

Verify string polarity and continuity, and explain the expected readings for a healthy versus reversed or open string.

Describe earthing and lightning/surge protection for a rooftop array, including earthing conductor sizing and surge protective device placement.

Diagnose three common faults (earth fault, low string current, inverter over-temperature) from given measurement data and state the next test.

Prepare a commissioning checklist covering visual inspection, torque checks, insulation resistance, polarity, Voc/Isc comparison to datasheet, and inverter start-up.

Compare grid-tied, off-grid, and hybrid inverter topologies on grid interaction, battery interface, anti-islanding, and typical applications.

Explain PWM versus MPPT charge controller operation and calculate the approximate energy gain of MPPT under a stated voltage mismatch.

Select a battery technology (flooded lead-acid, AGM, lithium) for a given duty cycle and state depth of discharge, cycle life, and ventilation requirements.

Describe meter and monitoring functions: generation meter, net meter, inverter data logging, and how to read daily yield and performance ratio.

Use diode and semiconductor basics to explain bypass diodes and blocking diodes in a PV array and predict the effect of a failed bypass diode on string output.

Build a fault tree that starts from 'inverter shows no generation' and branches through DC side, AC side, grid, and monitoring causes with a specific test at each branch.

Calculate performance ratio from given energy meter and irradiance data and decide whether the system meets a stated threshold.

Explain safe disposal and recycling routes for lead-acid and lithium batteries and for PV modules as e-waste, including why landfill is not acceptable.

Describe environmental controls for a site: spill containment for battery electrolyte, dust and waste segregation, and safe handling of broken glass.

State the emergency response for arc flash, DC shock, and battery acid contact, including isolation and first aid steps.

Prepare a customer quotation for a 3 kW rooftop system that itemizes modules, inverter, mounting, cabling, labour, and margin, and shows GST and total payable.

Explain the documentation handover pack: warranty cards, test reports, single-line diagram, and net-metering application forms.

Demonstrate a customer handover conversation that explains system operation, monitoring, and maintenance in plain language.

Identify two relevant government support routes for rooftop solar (such as subsidy or net-metering schemes) and state what documents a customer typically needs.

Complete a timed 20-question mixed-domain self-test and review every wrong answer against the source topic.