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New ceiling light fitted.....now RCB tripping


 
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kevinyork

from United Kingdom

Joined: 16 Aug 2006
Posts: 3
Location: Yorkshire,
United Kingdom

PostPosted: Fri Jan 15, 2010 7:57 pm Reply with quote

Got a new house. Had an electrician install a BIG ceiling light this week and I mean big. Its a 20 x 20w spiral with an inbuilt transformer. Looks superb but a couple of times when turning it on the RCB for that circuit trips. It resets ok but not sure what the problem is. Any advice please?
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JohnD

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Joined: 15 Nov 2005
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PostPosted: Fri Jan 15, 2010 8:01 pm Reply with quote

RCB is wrong

do you mean MCB?

Or RCD?

What is printed on it?
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sparkydude

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PostPosted: Fri Jan 15, 2010 8:25 pm Reply with quote

Chances are if is a fitting with low voltage lamps and a transformer in it then your electrician has not taken into account the surge on a circuit containing a transformer. Get him back and subject to the maximum EFLI values being acceptable he needs to change the MCB to a C type to overcome this problem. If its the rcd that is tripping chances are he has pinched a cable or something when installing it.

Nick
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ban-all-sheds

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PostPosted: Sat Jan 16, 2010 2:17 am Reply with quote

sparkydude wrote:
If its the rcd that is tripping chances are he has pinched a cable or something when installing it.

kevinyork wrote:
It resets ok

Who's the regular here with the animated GIF smiley of a dude in a hat slowly shaking his head?
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sparkydude

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PostPosted: Sat Jan 16, 2010 6:26 am Reply with quote

Chances are that as expected Ban all Sheds will give a sarcastic good for nothing unhelpful answer to a question he has no real knowledge about. The OP has not come back to confirm if it is an RCD or MCB yet you jump on the bandwagon AGAIN to criticise the oppinons of a tradesman . Who is to say the rcd is not faulty if it actualy is an RCD. If you cannot post a helpful reply to the OP question may i kindly suggest you keep your sarcasm to yourself.
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Jacobssi

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Joined: 03 Jan 2010
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Location: Berkshire,
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PostPosted: Sat Jan 16, 2010 8:14 am Reply with quote

What is elfi?
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PrenticeBoyofDerry

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PostPosted: Sat Jan 16, 2010 9:17 am Reply with quote

Jacobssi wrote:
What is elfi?

You mean EFLI
Earth Fault Loop Impedance
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Jacobssi (16 Jan 2010)
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ban-all-sheds

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PostPosted: Sat Jan 16, 2010 11:28 am Reply with quote

sparkydude wrote:
The OP has not come back to confirm if it is an RCD or MCB yet you jump on the bandwagon AGAIN to criticise the oppinons of a tradesman .

The OP has not come back to confirm if it is an RCD or MCB yet you have decided, if it is an RCD, to criticise the work of a tradesman.


Quote:
Who is to say the rcd is not faulty if it actualy is an RCD.

You, as in "If its the rcd that is tripping chances are he has pinched a cable or something when installing it", rather than "If its the rcd that is tripping chances are that it is faulty".


Quote:
If you cannot post a helpful reply to the OP question may i kindly suggest you keep your sarcasm to yourself.

I'm not sure how helpful your reply was to tell the OP that if it's an RCD that's tripping it's probably due to an intermittent earth fault when you think that the RCD might be faulty.
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