SolarSavings
Understanding the physical execution of a solar installation helps you supervise your vendor and ensure quality workmanship.
1. Site Survey & Shadow Analysis
The vendor evaluates roof strength, measures available shadow-free area using tools like a solar pathfinder, and determines the optimal tilt angle (usually between 10 to 15 degrees in South India, and up to 25 degrees in North India) facing True South.
2. Civil Work & Mounting
Concrete pedestals (blocks) are cast on the roof. The HDGI structure is bolted to these blocks. Drilling directly into the roof slab is strictly avoided to prevent water leakage.
3. Module Mounting & DC Wiring
Panels are bolted to the rails. They are connected in series (a "string") using MC4 connectors. The DC cables are routed to the DC Distribution Box (DCDB) which houses surge protection devices.
4. Inverter & AC Wiring
The inverter converts DC to AC. The AC output flows into the AC Distribution Box (ACDB) and then connects to the home's main electrical panel.
5. Net Meter Synchronization
The DISCOM replaces your standard meter with a bidirectional net meter, formally synchronizing the plant with the utility grid.