On 2004-08-03, John Orrett wrote:
Hi all; my missus wants a new bathroom suite, and we are (sorry - she is)
looking at a whirlpool spa type thingy bath. I'm just wondering about the
electricity needed for the pump. The nearest electricity is next door in my
daughter's bedroom through a normal plug socket. The spec says that it must
be protected by a fuse switch (30 mA) by a 31A or 16A fuse. Furthermore,
this circuit must contain a dual-pole circuit breaker with a contact
aperture of at least 3-mm. The potential equiliser (at least mm squared) is
to be connected to the motor plate.
At this last bit, all I saw was white noise :-). Our local friendly plumber
will hook up the power to the pump but won't fix the wiring.
Question is - is it OK to feed this out of a normal plug socket or does it
need something meatier? I'll be getting a local spark in to do the job
needless to say!
Thanks
John

John, - Saninova bath by Maax?

In which case my installer has used our shower circuitry (as we no
longer have an electric shower. Downrated the MCB to 16A from 32A (it
was powering a 9.x kw electric shower) - a dual pole isolating switch
with a 5A fuse is in line with the pump on the bath (as the total draw
on the motor to the whirlpool is ~200W so 5A is *plenty* and allows
for any inrush). It being the shower circuit it already had a ceiling
mounted 45A pull switch that breaks the circuit - which is nice as we
have a toddler who seems to like to press buttons.

The bath does have a "no water" protection against this - but the
total isolation is nice

The whole CU is protected by an RCD of sufficient sensitivity to cope
with the needs of the whirlpool kit anyway.

Have to say - he was quite suprised how cryptic the information was
about it - but when he actually sat and worked it through - it all
made sense We were lucky that we could re-use the shower wiring
though. We'll be putting a pump on the HW side in the cupboard with
the water tank tho as our hot flow is a little bit **** poor - so the
bath takes a good while to fill

Cheers
Dan.