Integration of Solar system with multiple utility company's sources in a home

ahanjum · Nov 1, 2019

I have installed 4kw (5kva) solar system at my home. I have 3 phase supply (3 single phase meters instead of one 3 phase connection, i.e 3 separate phases and 3 neutrals, These neutrals are combined at source end of utility company) from the utility company. when I shifted load of one kwh meter on the solar system, it worked nicely but when I connected load of other meter, the earth leakage CB installed at incoming from utility Co. was tripped. Please note that since utility company's supply is through single phase meters, only phase was shifted to the solar system, neutral was not shifted.
I want to know, how this issue can be fixed?

Edtwozeronine · Nov 1, 2019

Sounds like you really need to get an electrician in as what you're dealing dealing with is a very complicated installation. The solar PV system would need to be fed to an inverter then get excess power fed back to the grid, assuming you want to make money via a feed in tariff.

The other alternative is to get the power sent to a storage system in the form of a bank of batteries but that would be more useful in an off grid scenario. Unless you wanted to use it as a backup power system for emergencies. Either way what you're tackling here is not a DIY project!