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Discuss Problem with 11KW Kiln in the UK Electrical Forum area at ElectriciansForums.net

OP - can you see what markings are on the armoured cable?
 
OP - can you post a picture of the fuse board where the kiln is?

IMG_0108.JPG


IMG_0109.JPG
 
What does the certificate for the fuse board change state?

Looks like the small CU has a RCD too ........... which one is tripping?

Wonder why the installer fitted an upfront RCBO ?
 
As Murdoch says, the upfront RCBO doesn't seem necessary. Tel's idea of changing it for a fuse may be wise. After the necessary testing obviously.
 
I
What does the certificate for the fuse board change state?

Looks like the small CU has a RCD too ........... which one is tripping?

Wonder why the installer fitted an upfront RCBO ?
I asked electrician to replace board as the kiln cable had almost caused a fire inside the old plastic board (melted the casing a little)!! Scary!. He decided to put the RCBO in.

It is the CU (on the left in picture) on house board that trips. The RCD on the right is for the lighting circuit of house.

IMG_0104.JPG
 
Did the spark not fit the SWA cable?
Cable fitted 10 years ago by newly qualified friend!! Always wondered if he did the right thing.

Really appreciate all your advice. Without finding the cause I have no business. Just though many heads better than one as I am desperate and I was right..you're all great. I'll make you all a cyber cuppa :)
l
 
Ok , that happens too .
If the wall that the cable is on is south facing and gets lots of sun , and judging as it is business use and is on for long periods - that cable is going to have a good start at getting preheated.
It could be as has been said before the insulation resistance has been compromised. , or the cable has been damaged by the first overheat incident.
If I were you I would get a reputable electrician to inspect and test this circuit .
Maybe someone on here is nearby.
 

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