OP
- Reaction score
- 26
We've been in touch with the electrician who installed the Solar PV and he was aware of the 6mm2 circuit which had been installed from the consumer unit to the weatherproof enclosure on the external wall for the provision of supplying future shed.I would not connect the PV system to the same supply!
you could safely isolate the AC isolator at consumer unit but the system is still a generator & will not be isolated completely, DC side will still be live & going into the micro inverter & although the micro inverter requires AC power to wake up & start letting voltage through what could happen under fault conditions?
you will not have safely isolated the whole system if you needed to work on the shed end.
As you know, he used this 6mm2 circuit to route generated power back to the consumer unit via the 20Amp MCB (shared RCD).
So when asked by my sister what would be the arrangements for supplying the shed off this circuit , he suggested that he'd install a main isolator switch and suitably rated MCB for the 6mm2 SWA for the shed inside the weatherproof enclosure.
So it would appear the intention is to share the 6mm2 FTE circuit with shed supply and Solar feed.
Like I said earlier, my involvement is just installing a mini consumer unit in the shed, connect 6mm2 SWA at shed, run a 6Amp lighting circuit and a 20Amp radial power circuit. Carry out all the dead tests.
Verification of my work, connection to supply and live testing will be performed by a qualified electrician.