T
Toneyz
post up some photo's so we know what you are describing.Yeh I will do tomorrow
Discuss 16mm T&E tails on 100amp fuse in the UK Electrical Forum area at ElectriciansForums.net
post up some photo's so we know what you are describing.Yeh I will do tomorrow
I'd say that by virtue of the switch fuse being present the 16mm T&E is a sub-main. I'd just check the fuse in that and fit a 60a cartridge if necessary. And it's only recently that this sub-main requires RCD protection to be compliant [Assuming reasonably low Ze] so in my opinion that doesn't make it dangerous. Just note it on the certificate.
Did a job earlier in a new build, part of a 5 year old new build estate in the darkest depths of kent. Anyhow opened up CU and saw 16mm tails so assumed would be on 80a fuse as there not huge demand. Then outside to check service head and main fuse is labelled 100a ?, the tails are 16mm t&e.
I did nor remove the fuse carrier to check the actual fuse as it was sealed
Anyhow my point is, ive already installed new circuit and have to issue an EIC, I will be writing in comments box write what I found and that it looks wrong. However looking forward what should I do about this. The customer wont be happy me turning off all the power; I told him to contact the people he bought the house from and raise the point.
Another thing I found includes a spur that don't switch off the load in garage that its labelled to do. Its not right is it, brand new house as well, and theres hundreds of them.
The bigger issue here for me...is whether or not it complies with the requirements of certain DNO's in regards to length of run from the service head (usually 3 meters...i think)...
It's fed from a switch fuse though.
Its not a sub main, its a semi detached house with its own single phase supply.
Checked again today and switch fuse has an 80A. Took some pics of the t&e serving the CU, as you can see theres no glands, no cleats, no rcd to be found. Not sure if theres mechanical protection where the t&e goes into building; what are your thoughts on this. The building was constucted in 2016.
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Checked again today and switch fuse has an 80A. Took some pics of the t&e serving the CU, as you can see theres no glands, no cleats, no rcd to be found. Not sure if theres mechanical protection where the t&e goes into building; what are your thoughts on this. The building was constucted in 2016.
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Hibreasoning was that because I hadn't physically inspected the fuse it could be 100a protecting tails rated at say 80a.Have the rules changed ?? Assess the maximum demand of the installation, if this does not exceed 60 Amps then 16mm tails are acceptable. I think NICEIC inspector told me this. Make a note on the certificate. It's important that any additions to the connected load do not exceed the rating of the tails.
Sorry I was referring to the original post.Hibreasoning was that because I hadn't physically inspected the fuse it could be 100a protecting tails rated at say 80a.
Reply to 16mm T&E tails on 100amp fuse in the UK Electrical Forum area at ElectriciansForums.net
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