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Discuss Burnt residue on CU in the UK Electrical Forum area at ElectriciansForums.net

kingeri

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Been looking at a CU where the main switch has burnt out, or rather the N connection on the bottom has. The busbar is fine. Upon inspection, the plastic back of the CU has the residue of burning but no actual damage (that I can see). I don't like leaving this but the customer already has a replacement switch. Would you guys be happy leaving all that burnt-ness in there?
 
if its just a fine ash residue its not a problem but it should be cleaned up
its a result of plasma arcing from a loose connection.
if the plastic is deeply pitted it should be replaced
 
i`d watch it if i were you around that C/U...
something a bit like this may jump out...

Alien2.jpg
 
i thought self portraits were banned on the forum, except for avatars. :devil:
 

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