Shower isolation swiching

[Brummiesparky]

Could any of you kind people clarify wether an isolator is required for an electric shower installation.
The manufacturers drawing shows one and quotes b.s. 7671 but I can't find anything in the rest
As a matter of fact I All ways fit one for safety reasons
Thank you in advanced

 

[MJPD29]

Yeah it requires a double pole isolator

 

[Andy78]

No requirement in the wiring regs, but good practice and useful to have one in most cases.

 

[Captain Black]

Don't forget to IR the circuit before you install the switch. I usually IR from the board to where the switch is going to be then from the switch to the shower itself.

 

[Captain Black]

Could any of you kind people clarify wether an isolator is required for an electric shower installation.
The manufacturers drawing shows one and quotes b.s. 7671 but I can't find anything in the rest
As a matter of fact I All ways fit one for safety reasons
Thank you in advanced

Well if the manufacturer recommends one be fitted, you'd be running foul of 134.1.1 and 5.10.3 if you didn't

 

[davesparks]

Don't forget to IR the circuit before you install the switch. I usually IR from the board to where the switch is going to be then from the switch to the shower itself.

Why IR test before completing the installation? You’ll only have to do it again once the installation has been completed.

 

[Captain Black]

Why IR test before completing the installation? You’ll only have to do it again once the installation has been completed.

I've always done it that way to avoid the neon in the switch messing with the results.

Maybe I'll get it in the neck but if the tests are OK, from board to switch, then from switch onwards to the shower itself then I'm happy. I prefer that to cross linking the L-N and then testing those two to E.

 

[Gareth Brookes]

Ir should be done with All accessories in place and screwed back surely you can do phase neutral to earth to avoid the neon

 

[buzzlightyear]

Could any of you kind people clarify wether an isolator is required for an electric shower installation.
The manufacturers drawing shows one and quotes b.s. 7671 but I can't find anything in the rest
As a matter of fact I All ways fit one for safety reasons

and where is this shower isolator going?

 

[Octopus]

I do ALWAYS fit one ..............

 

[telectrix]

so do I. if i can be bothered. more important things on the go , such as some prince getting married to some yank bird who's father can't be arsed to come. AS IF. GGMS.

 

[buzzlightyear]

so do I. if i can be bothered. more important things on the go , such as some prince getting married to some yank bird who's father can't be arsed to come. AS IF. GGMS

are talking about Charlie kfc bucket .I sell you a story .F88K I have heart attack coming on .pass my MAC over .

 

[DPG]

are talking about Charlie kfc bucket .I sell you a story .F88K I have heart attack coming on .pass my MAC over .

Strangely, that's exactly what I was about to put.

 

[buzzlightyear]

Strangely, that's exactly what I was about to put

beat you to it .

 

[Captain Black]

Ir should be done with All accessories in place and screwed back surely you can do phase neutral to earth to avoid the neon

At the end of the day, I feel that it's more important that the actual cabling is properly IR'd than the switch. I mean that's the whole point of the test surely?
Also, whilst L-N to CPC might be acceptable on an EICR (with an agreed limitation) it's not something I'd be happy with on initial verification.
At least doing it my way, you're going to be 100% sure the circuit hasn't been damaged during installation, and what are the chances you'll bugger it up just by adding the switch back in?
Answers on a postcard...

 

[Deleted member 105166]

Well if the manufacturer recommends one be fitted, you'd be running foul of 134.1.1 and 5.10.3 if you didn't

<pedant>
510.3
</pedant>

 

[sparksfly]

Yes to isolator, yes to isolate earth faults from RCD, yes for future maintenance. Triton & Mira companies will love you so their engineers don't have to walk when dealing with a faulty shower unit under guarantee (guarantee is invalid unless you follow their install instructions). PS don't forget water isolation nearby!