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by Stephen the sparks
Tue Jul 24, 2007 10:00 pm
Forum: Electrics Forum
Topic: Kitchen and bathroom lights
Replies: 1
Views: 2875

You need to find out which black is actually the switchline form the pullcord (or switch). With power off buzz out between black and red on each cable with the switch operated. When continity is made this black will be the switchline, ie comes live when the switch is operated. Connections are theref...
by Stephen the sparks
Tue Jul 24, 2007 9:53 pm
Forum: Electrics Forum
Topic: Supplementary bonding in a bathroom
Replies: 1
Views: 3213

The shaver socket will be a SELV unit and therefore there will no earth on the secondary side.

All other services seem to be in plastic therefore there seems no reason to bond
by Stephen the sparks
Tue Jul 24, 2007 9:44 pm
Forum: Electrics Forum
Topic: Earthing?
Replies: 2
Views: 3522

Best to install an earth rod as it is outside the equipotential zone. Fit a "garage" unit with its own RCD protection.

The integrity of the earth from the house is therefore not now relevant
by Stephen the sparks
Tue Jul 24, 2007 9:39 pm
Forum: Electrics Forum
Topic: Old style conduit
Replies: 2
Views: 3008

You won't be able to use the old tin whistle conduit, the electrician will use twin and earth. He may be able to use the old tube to pull up to the loft for the lighting, but this only saves on trunking etc
by Stephen the sparks
Tue Jul 24, 2007 9:35 pm
Forum: Electrics Forum
Topic: Shower cable size
Replies: 2
Views: 3316

Always fit a 10mm cable anyway as when the shower needs replacing you can put in a 10kw unit with no problems
by Stephen the sparks
Tue Jul 24, 2007 9:33 pm
Forum: Electrics Forum
Topic: Any expert advice appreciated.
Replies: 1
Views: 2525

Seems like it is an older property. If no cpc then this is a code 1 deviation. If there is no R1+R2 or R2 measurement then ask why not! If you are unable to ascertain where the water bond is, but a bond is at the board, (if it is 10mm then it was done more recently) then the bond can be tested with ...
by Stephen the sparks
Tue Jul 24, 2007 9:20 pm
Forum: Electrics Forum
Topic: Under Tub - outside all zones
Replies: 6
Views: 3642

Under the tub is actually zone 0. Must be IPX7 protection, only 12v SELV equipment is allowed that cannot be reasonably located elsewhere.

No switchgear allowed in zone 0 I am afraid.

Regs 601-08-01 and 601-09-01 apply
by Stephen the sparks
Tue Jul 24, 2007 9:11 pm
Forum: Electrics Forum
Topic: Thickness of wire
Replies: 2
Views: 3060

We assume that when you say new house, it is not newly built or wired.

A larger cable could possibly be an old cooker cable that has been put into service with a socket outlet on it. This would not be a problem
by Stephen the sparks
Tue Jul 24, 2007 9:07 pm
Forum: Electrics Forum
Topic: RCD Tripping - Is it an earthing problem?
Replies: 2
Views: 3257

The heat pump, being in the garden, is outside the equipotential zones. You are right when you say they share a common earth and that is the problem. The solution is to disconnect the earth at the heat pump end and then stake this down on its own earth stake. This should cure the tripping issue Your...
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