Tony that is beautifully done!
:thumbsup:
If I may ask, can a type D MCB be implemented instead to prevent tripping on inrush?
Also, what are those triacs for on the far right? :?
I don’t want MCB’s in a distribution circuit. Do PoCo’s use them to protect small transformers?
Fuses can’t be readily reset by the consumer. Unlike a supply from a PoCo this is a private system but like a PoCo whoever works on it has to be authorised/licensed, IE competent for this class of work.
As I said before, this falls under BS7430, outside the scope of BS7671.
MCB’s will be used for the final circuits which is why I’ve had to be careful getting a MPFC that will guarantee disconnection times will be met.
Triacs?
They’re VTS diodes and MOV’s, (SPD).
They clamp any over voltage caused by system and switching transients to protect computers and other electronic devices. I’m not expecting problems with transients but for the sake of £25 I’m having them fitted.
I could specify SPD’s be fitted at the consumer’s LV intake but the internal design is not in my remit.