Module 9 of 10
Installation, commissioning, safety and O&M
Doing the job right: tools, sequence, testing, commissioning reports, safety and maintenance.
- 6lessons
- 69minutes
- 3,511questions in the bank
Lessons
Tools, PPE and working at height
The tools and test instruments a rooftop crew needs, PPE that prevents injuries, and safe practice for ladders, tin sheds and Indian heat.
11 min readInstallation sequence: structure, modules, DC, inverter, AC
The step-by-step order for a rooftop installation, from material check and layout to structure, modules, DC wiring, inverter, AC connection and labels.
12 min readTesting: polarity, Voc, insulation resistance, earth resistance
Pre-commissioning tests for a rooftop PV system: earth continuity, polarity, string Voc and current, insulation resistance and earth electrode resistance.
12 min readCommissioning, documentation and handing over to the customer
Power up in the right order, check output against an expected value, test anti-islanding, and hand over a complete file and a trained customer.
11 min readOperation & maintenance: cleaning, inspections, monitoring
Keep rooftop systems producing for 25 years: safe cleaning for Indian dust, a seasonal inspection plan, and monitoring data to spot problems early.
11 min readTroubleshooting common faults: low generation, inverter errors, tripping
A step-by-step method for common rooftop faults: low generation, grid over-voltage, isolation faults, zero output and RCCB or MCB tripping.
12 min read