They are functional earths and should be coloured cream tho I think the colour has now changed to pink, they are white looking normally, they have definitely changed to a darker shade.
Well The DB is located in a cleaners cupboard which houses cleaning products, DB cover is correctly fitted etc.
The twin and cpc cables are fine tho, although they are LSOH cables.
Rcbos are operating and test within their perimeters.
The discolouration is throughout their length.
Rcbos are not overloaded and the odd one is still coloured cream , but not many.
I can’t see evidence on the neutral leads, they are just an odd colour compared to the blue ones we all know and can see in the picture.
The functional earths have suffered discolouration by I’d imagine, heat, them rcbos are warm to the touch.
Ive asked Schneider to see if they had produced such...
Thoughts on this please, functional earth leads obviously showing signs of heat damage, the greenish coloured neutral leads compared to the blue ones are coloured throughout their length, maybe heat has caused this?
As said, 10mm is the minimum bonding conductor size, an existing 6mm tho doesn’t necessarily make an installation unsatisfactory.
Your earthing conductor would also need to be 10mm minimum if it’s a combination of protective bonding conductor and main earthing conductor.
The building regulations require you to be 100mm from the hob, not 300mm plus it’s a building regulation for new builds and similar, nothing to do with bs7671 which deals with the suitability of the external influences etc
For the picture and if no evidence of thermal damage it’s only a C3 at...
Rather than taking the attitude of, ‘it doesn’t matter if I don’t know they just want my money and I’m in’ take the time to brush up on your knowledge, learn the procedure of initial verification and testing , why we select equipment the way we do and actually impress the assessor, all the best...
Yes a meter box is an enclosure, the regulations do not define if only a skilled or non skilled electrically person is required to open it with a key or tool and there are also internal barriers against access to live parts, so I don’t see basic insulation on show in a meter cabinet as non...
If it’s accessible then it’s a C2, basic insulation exposed outside of a suitable enclosure, basic insulation cannot be used on its own as a form of protection.
You measure Ze at the origin not Zs , hence no Zs box for the origin.
N-E IR tests are covered in the L-E column.
L-E means all live conductors which includes the neutral tested to earth.
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