I am installing one of these Grohe wireless shower pump/controllers under a
bath.
The house is entirely protected by an earth leakage trip (RCD) but I have a
question about installation of cabling.
I can bring the electric supply down from above inside a partition wall and
join it to the Grohe cable.
Do I join it with a junction box and bury it in the wall, use a waterproof
junction box on the bathroom side, not bother with a junction box just join
and have a cable patress or what?
i.e. what is the correct way to install this/connect it up?

One other question is that the inlets are connected by copper/brass to
existing pipework but do I need to bond the outlet copper/brass to the
existing pipework or will all the pipework already be connected via the
mains cable?

Thanks for your consideration

Arthur

"Arthur" wrote in message
...
I am installing one of these Grohe wireless shower pump/controllers under a
bath.
The house is entirely protected by an earth leakage trip (RCD) but I have
a question about installation of cabling.
I can bring the electric supply down from above inside a partition wall
and join it to the Grohe cable.
Do I join it with a junction box and bury it in the wall, use a waterproof
junction box on the bathroom side, not bother with a junction box just
join and have a cable patress or what?

If the joint is under a bath that has a bath panel then the juction box need
not be waterproof. Do not bury a juction box in the wall. The shower will
require a double pole switched fused spur some where. I would consider the
loft to be an acceptable place for this. The RCD needs to be rated at 30mA.

i.e. what is the correct way to install this/connect it up?

One other question is that the inlets are connected by copper/brass to
existing pipework but do I need to bond the outlet copper/brass to the
existing pipework or will all the pipework already be connected via the
mains cable?

Have you already got supplementary bonding in the bathroom?

Adam

"ARWadsworth" wrote in message
.uk...

One other question is that the inlets are connected by copper/brass to
existing pipework but do I need to bond the outlet copper/brass to the
existing pipework or will all the pipework already be connected via the
mains cable?

Have you already got supplementary bonding in the bathroom?

Adam

Thanks for your advice Adam, don't know what bonding there is, I am merely
assuming that the existing supply is fully bonded.
I guess that by bonding the outlet to the inlets that one way or another the
pipework will be protected?
Thanks
Arthur

"Arthur" wrote in message
...

"ARWadsworth" wrote in message
.uk...

One other question is that the inlets are connected by copper/brass to
existing pipework but do I need to bond the outlet copper/brass to the
existing pipework or will all the pipework already be connected via the
mains cable?

Have you already got supplementary bonding in the bathroom?

Adam

Thanks for your advice Adam, don't know what bonding there is, I am merely
assuming that the existing supply is fully bonded.
I guess that by bonding the outlet to the inlets that one way or another
the pipework will be protected?

Have a read of the following.

http://www.niceic.org.uk/downloads/NL139supp.pdf

Adam

Have a read of the following.

http://www.niceic.org.uk/downloads/NL139supp.pdf

Adam

Thanks Adam.

Arthur