My (H1 G2 + EP11) installer has connected to an existing ac type rcd in the Consumer Unit, shared with household circuits. It's been tripping. There is a long armoured ac run from inverter to CU. Looking at regs and manual the options seem to be:
1.Dedicated A type rcd in CU
2. Dedicated RCBO in CU
3. MCB only, no rcd in CU
Any suggestions please as to which of these options are acceptable and reliable.
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Joined: Tue May 06, 2025 6:44 am
Posts: 1887
Joined: Thu Oct 13, 2022 7:21 pm
What size is your inverter and the breaker, it might be over loading not RCD tripping ?
I’m assuming your CU doesn’t have an RCD for the main switch just a breaker? - in which case a 100mA type A RCBO would be the best fit, otherwise have a separate CU installed for the solar and fit either an RCD or RCBO there.
(3) is a definite no.
I’m assuming your CU doesn’t have an RCD for the main switch just a breaker? - in which case a 100mA type A RCBO would be the best fit, otherwise have a separate CU installed for the solar and fit either an RCD or RCBO there.
(3) is a definite no.