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stevie h

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Is there anything in the regs that says you cant run a socket off the lighting circuit ? my obvious answer is that it cant/shouldn't be done , but another spark i know said you can to run booster aerials in lofts etc , and i suppose he is right as the lighting circuit is protected by the 5a mcb so there is no chance of overloading the cable.
 
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greekislandlover

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  • #2
I have seen boosters connected directly into the lights before. But I guess the reason for not wiring a socket off the lights is there is always the risk somebody will decide to run a microwave off of it, use it to power an extension lead to the garage for an arc welder or engough crimble lights to be seen from the moon.

If there's no alternative, I'd take the feed from the lights and wire it into a FCU and then the booster directly into that. But that's probably againts the regs too.
 
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Reg Man

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  • #3
No reason at all why you can't....I'm sure. You can use 3 pin 5A socket plates. TV boosters and extractors are often run from a single socket or 13A fused spur.
If the circuit is correctly fused for the cable at the board it will just blow if an Arc welder or any other high output load is plugged in.
 
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Spudmiester

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  • #4
done this. booster in loft of barn conversion, came with transformer/plug all in one, so 5a socket not an option. stuck a single 13a socket off lighting circuit with label saying booster only. Couldnt get a proper supply up there as it was an after thought and everything was plastered and painted . Be right !
 
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TheFullHitSpark

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  • #5
Iv'e seen a few scenarios where there is a socket spurred off the end of a lighting circuit , mainly only in industrial installations where it would make it practical and hell of a lot less hassel for periodics and initial testing procedures (Z' s test's). It would be good practice to label the socket itself for the application, but as Reg man said " If the circuit is correctly fused for the cable at the board it will just blow" rendering the circuit electrically sound!
 
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greekislandlover

  • Thread Starter Thread Starter
  • #6
I know what you all are saying, but the idea of putting a socket on the lighting circuit still makes me feel uncomfortable.

It's likely that there will be no RCD protection, and as we all know, that's now a biggie. I know that the MCB will blow, but I don't think that's enough of an argument. You can still get a lethal shock off of it first. If there is a socket there - even if it's labeled only for the use of a specific appliance, some numpty will ignore it and plug in an extension to run the lawnmower. Maybe because I've seen people running hot tubs off of an extension lead and no RCD I'm a bit paranoid :)

But I wouldn't have too much of a problem with running it off of an FCU with a 3A fuse.
 
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Gazza D

  • Thread Starter Thread Starter
  • #7
A few weeks ago I ripped out a "ring" in a dodgy loft conversion which was off the lighting circuit and wired in 1mm!!
 
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Stevehubbard

  • Thread Starter Thread Starter
  • #8
Just to re open this folks.... Just come across a socket wired in a bedroom thats on the lighting circuit. It's on a 5 breaker. The misses wants to run a hairdryer on it. Can I change the breaker for a bigger one or shall I just pull the socket out???
 
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Stevehubbard

  • Thread Starter Thread Starter
  • #11
Nope it's 2.5mm but that's from socket to I'm presuming light in bedroom. Then I'm presuming regs would of made them put in 1.5mm for the lighting circuit
 
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SPARTYKUS

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  • #12
"looks like" is no good you need to be positive.

I would suggest not, any hairdryer ive seen would 'fill up' a light circuit before the lights were switched on
 
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Adam W

  • Thread Starter Thread Starter
  • #13
If it's a 2A socket that's switched with the lights then it's for a freestanding lamp only.
If it's a 13A socket switched with the lighting circuit it needs changing for a 2A socket and using for a freestanding lamp only.
If it's just a 13A socket without a remote switch being used for a clock radio etc it needs taking out - lighting circuits are for lighting.
 
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Stevehubbard

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  • #14
Nope it's 2.5mm but that's from socket to I'm presuming light in bedroom. Then I'm presuming regs would of made them put in 1.5mm for the lighting circuit
 
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Octopus

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  • #15
I wouldn't recommend changing the breaker!
 
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