Purpose of shower isolation switch
"Mike Humphrey" wrote in message
o.uk...
Graham. wrote:
On Fri, 11 Dec 2015 23:29:35 -0000, "Tough Guy no. 1265"
wrote:
Had a look around on t'internet, seems to be no real reason to have a
shower cord in the bathroom. Why does it need to be switched off any
more than any other appliance? Apart from maintainence once a decade,
in which case you pull the fuse in the fusebox.
Doesn't have to be a pullcord, can be a dolly switch outside the
bathroom.
I don't trust pullcord switches, even if they have a mechanical
tell-tail, so I would always isolate upstream as well.
Every appliance needs an isolator, and an isolator must isolate all live
conductors - that is both line and neutral.
On a TN system there is no requirement to isolate the neutral and a single
pole MCB is allowed to be the isolator.
--
Adam
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