Discuss Refurb works In offices in the UK Electrical Forum area at ElectriciansForums.net
Wouldn’t that be down to the electrical consultant etc,he’s ordered the works,we’ve installed what they asked for,completed & tested.
Wouldn’t that be down to the electrical consultant etc,he’s ordered the works,we’ve installed what they asked for,completed & tested.
It’s not an ideal world and there’s jobs were no spec exists you are the designer ,installer the lot. I’ve done many a job were the so called spec is basically ‘I want a socket there and there’ from the customer.Yes agree,can’t understand how this as come about,no cerfication,the actual works for power is not a lot,it’s just alterations or repositioning .
There is no spec to the works,ain’t got a clue why not.
Also getting no answers f anyone.
I wasn't aware that there is a required disconnection time for short circuit.A rcd used for fault protection live to earth would tackle the high zs on the circuit problem provided its high because of the length and not because of poor/ loose connections anywhere on the ring.
A live - neutral loop test should be undertaken to confirm that for short circuit protection the protective device will operate within the required time.
Needs to disconnect in 0.4 of a second does it not for TN systems.I wasn't aware that there is a required disconnection time for short circuit.
I think this would be referencing 434.5 where any fault current must be disconnected without damage to the conductors and the time to reach maximum temperature is calculated from t= (k²S²)/I².Where in Bs7671 does it give disconnection times for short circuit faults?
Happy to be corrected on this but I'm not aware of any disconnection time requirement on short circuit faults, only on faults to conductive parts or protective conductors.
Reply to Refurb works In offices in the UK Electrical Forum area at ElectriciansForums.net
We get it, advertisements are annoying!
Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.