No worries, it was a most welcome distraction from trying to reassemble an over-locker sewing machine....I'll explain in Arms in a minute...I need a holiday ....
Discuss On the fiddle ______________ in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net
No worries, it was a most welcome distraction from trying to reassemble an over-locker sewing machine....I'll explain in Arms in a minute...I need a holiday ....
There are two large diameter cables going from the CU to the same point in the head, a blue and a green yellow. The blue passes through the meter and the other doesn't, swapping them won't affect the installation because they're joined anyway, essentially it's just a cable colour changing crossover switch.How would you stop the neutrals from acting as proper neutrals though since they're all physically connected correctly in the board?
I'm trying to visualise a set up whereby the board can look normal but can be switched to use earth as neutral.
What sort of earthing system is it ?
No there isn’t the blue conductor isn’t connected to the meters neutral as the incoming to the meter has been disconnected, leaving a switched shared cpu/neutral connected to the meters output.There are two large diameter cables going from the CU to the same point in the head, a blue and a green yellow.
Thats what I thought but was more concerned with using a single conductor to combine N and Cpc I would have thought could upset an rcd.TN-C
Thats what I thought but was more concerned with using a single conductor to combine N and Cpc I would have thought could upset an rcd.
I don't think it's helpful to label this installation as a TN-C. I understand that in some ways that is correct, but it is causing confusion.In a TN-C installation, the neutral and earthing conductor are combined, thus making the detection of residual current impossible.
A generator cross over switch or a contactor would do what you want.I cant find a ~100a version of the crossover switch in the picture, one that will link straight through L-R and then when turned join L green to R blue as well as L blue to R green. It's easy enough to do in electronics but I guess no-one makes an electric sized version. Sorry for the floppy CAD, turns out windows paint 3D is ----
Reply to On the fiddle ______________ in the Electrical Wiring, Theories and Regulations area at ElectriciansForums.net
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