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by mephistico
Mon Sep 01, 2008 5:30 pm
Forum: Electrics Forum
Topic: Changing pull cord for PIR - wiring confusion...
Replies: 3
Views: 6042

A triac based PIR doesn't need a neutral. It an alternative.
by mephistico
Sun Aug 31, 2008 4:35 pm
Forum: Electrics Forum
Topic: New Ceiling light
Replies: 3
Views: 2334

3 reds - Together in a connector (permanently live)
2 blacks - together in connector with Neutral of light
1 black with red sheath - in connector with Live of light
1 yellow/green - in connector with earth of light.
by mephistico
Sun Aug 31, 2008 3:09 pm
Forum: Electrics Forum
Topic: I like to read in bed!
Replies: 2
Views: 2472

Or change the existing lightswitch to a infra-red dimmer type. Only drawback is you cant use low energy. It doesn't come with a remote but any standard remote can be programmed. Click through on the link below to seea remote then look round for the dimmer you like.

http://www.awin1.com/pclick.php?p=23453 ... 071&m=1228
by mephistico
Sun Aug 31, 2008 2:59 pm
Forum: Electrics Forum
Topic: old CU needs upgrading.
Replies: 19
Views: 6545

Bear in mind also that the bonding may be undersized to current regs & a test/inspection is probably due. With an older installation there is no need to comple with 17th edition regulations. You should concentrate on getting it up to 16th edition (split load board, sockets on RCD 10mm main bonds...
by mephistico
Sun Aug 31, 2008 2:56 pm
Forum: Electrics Forum
Topic: Using existing Shower Supply to feed loft ring
Replies: 6
Views: 4273

A shower circuit is to be an individual circuit. I thinks it's list in Guidance Note 1 of the regs (selection and erection).
It's not good practice to do otherwise.
by mephistico
Sun Aug 31, 2008 2:48 pm
Forum: Electrics Forum
Topic: cable rating on a spur?
Replies: 3
Views: 4647

It one of those anomalies of the regs. You have to take diversity into account. What are the chances of someone using a 26A load on a double socket? Your argument is perfectly sound but if you have ever calculated the maximum demand on a house it comes out at 160A (typical) and your service fuse is ...
by mephistico
Sun Aug 31, 2008 2:44 pm
Forum: Electrics Forum
Topic: Noisy Bathroom extractor
Replies: 6
Views: 4063

Easy to replace this with a Manrose or similar make. I presume it's 4"?
by mephistico
Sun Aug 31, 2008 7:43 am
Forum: Electrics Forum
Topic: Noisy Bathroom extractor
Replies: 6
Views: 4063

I wouldn't bother wasting time and effort messing with dimmers. What you would need would be a speed controller but for a domestic situation, it's hardly cost effective.
What make is the fan?
by mephistico
Sun Aug 31, 2008 7:35 am
Forum: Electrics Forum
Topic: Light bulb comes on the goes out!
Replies: 4
Views: 5873

It sounds like your "simple" outside light might be a PIR model. Are there any dials on the bottom of it? Is there a white plastic area on it somewhere?
Any chance of a pic?
by mephistico
Sun Aug 31, 2008 7:30 am
Forum: Electrics Forum
Topic: Building accross electrical supply cables
Replies: 5
Views: 9844

Are you sure it's power and not BT? 3.0mtrs is too low for power (It should be 5.2 mtrs minimum for overheads). Either way, the supply cables need to be diverted around your property rather than through - In the event of damage, fault etc, there would be access issues. Supply authority is best bet a...
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