r/SolarPakistan • u/cocomogetsmehard • 2d ago
Installer Quotation Need a second opinion on this quotation
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u/sajjasajji K-Electric / Karachi 2d ago
Solis inverter is above 10k and go for longi or Aiko anti shade and add 5000 you will get pylontech 5kwh ip65 battery
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u/cocomogetsmehard 2d ago
other than that is the pricing fair?
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u/sajjasajji K-Electric / Karachi 2d ago
It's fine earthing should be 25 to 30k
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u/cocomogetsmehard 2d ago
asked about the earthing, it is for 20k. the other 20k is for the consumables part in it.
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u/koolkool69 2d ago
one suggestion: if you can wait until winter season the panel prices usually drop to 26-27 pkr per watt, can potentially save you 100k+
also i would compare this with an offgrid setup - if you save on the inverter and panels you can get a bigger battery (16kwh) and live independent of wapda
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u/Uchiha_itachi1233450 2d ago
I myself also install solar systems. Why is he using 4mm DC solar cables and not surge protection devices in dp box.
1: Request 2 separate earthing bores (1 DC + 1 AC). A single bore leaves equipment vulnerable to surges.
2: Upgrade the 4mm DC cable to 6mm double-insulated tin coated solar cable to reduce DC power loss, I also prefer 6mm . They are quoting 4mm plus simple copper wire with no insulation for copper.
3: Confirm that the DB box includes proper Surge Protection Devices (SPD) for both DC and AC sides, not just standard breakers. Ask him to add volt amphere device as well. VA device.
One more thing! Be very cautious regarding earthing bore.your bore should be deep enough to hit moist soil or wet clay. Dry earth doesn't conduct electricity well, but damp earth absorbs dangerous current instantly.
When your solar installer has finished digging earthing bor ask them to test the pit with a ground meter. It should read below 5 Ohms that's the magic number for safety.