Electric Showers - Confused

[BunkMoreland]

The initial message was deleted from this topic on 29 June 2026 at 21:26

[richhead]

if you are looking for a short term fix as you are planning redoing the bathroom, why not just diy, they are not hard to fit, and if the same make and model even easyer.

[DorsetSparky]

How about an upfront RCD before the board, or getting an electrician to replace that main switch with a 100A RCD, and then you'll at least have one RCD protecting everything? In the interests of safety you want an electric shower to be RCD-protected. Ideally everything.

If you're there long term, best option might be a board change for a metal board with individual RCBO protection - this means each circuit breaker has a built-in RCD too, so one thing tripping doesn't cut power to your whole installation.

Get someone in and do it properly, don't mess around if you don't know what you're doing! I'd never mess around with my boiler, for example, because I don't know enough about it. If you gotta ask, you should probably defer to an expert.

Whereabouts you based?

Edited by DorsetSparky on Thursday 26th June 22:25

[DorsetSparky]

BunkMoreland said:

Can I replace the shower mcb (lower photo) with a "type A" 40a RCBO and that solves the problem? Is that plug and play as well if I turn off all the power first?

Edited by BunkMoreland on Thursday 26th June 21:20

Please don't take your board cover off or consider changing breakers yourself.