Discuss Minor Works and Meter Tails in the Periodic Inspection Reporting & Certification area at ElectriciansForums.net

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Djlelectrical

When installing lights would you change meter tails from 16mm to 25mm. Customer doesn't want to pay for upgrade main service fuse is 60a
 
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1shortcircuit

If it's 60A then no need.

Only required on a 100A main fuse:thumbsup
 
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Djlelectrical

Even if its not as per the regs ?? they recommend 25mm
 
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1shortcircuit

Even if its not as per the regs ?? they recommend 25mm
I'd more more interested in making sure the earthing/bonding is correct.

What's the CCC of 16mm tails? ;)

If I was replacing a CU then perhaps you would but I don't see the point to be honest.

If the customer doesn't want to pay then why do it?
 
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Djlelectrical

Bonding is fine and up to date, The 16mm tails will carry roughly 85 amp so im not bothered about that.. its a case of weather its acceptable to issue MWC if the tails are not as per the regs
 
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1shortcircuit

Bonding is fine and up to date, The 16mm tails will carry roughly 85 amp so im not bothered about that.. its a case of weather its acceptable to issue MWC if the tails are not as per the regs
You wouldn't find me changing them, you've just proved yourself that they do not need to be. 16mm tails rated to 85A protected with 60A device, where's the issue?

What earthing system is the installation using?
 
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Djlelectrical

Its a TNCS, just beating myself up with the regs as they state minimum 25mm
 
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1shortcircuit

Its a TNCS, just beating myself up with the regs as they state minimum 25mm
As I keep seeing posted recently, the Regs are Guidance Notes NOT LAW. In this situation you can safely justify why they do not need to be replaced especially as you are only doing a Minor Works. CU change? Fair enough but the customer has already stated that they do not want to pay for it.
 

Richard Burns

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I am fairly sure that the wiring regulations do not state a minimum size for the tails to a CU, I think this is stated in the on site guide which is certainly just a guide.
 
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