Take the free electrical design training module here 👉 training.efixx.co.uk/course/introduction-to-electrical-design-cpd-in-association-with-bg-electrical
Seems strange we use the c min value of 218.5V in the calculation for earth fault values when a minimum permissable voltage value in the esqcr regulations is 216v
You should make a video explaining what CPD means. I've been watching your channel for over a year (probably 2 now) and although I have learnt loads from you I still don't know what CPC is
So yeah enclosures to 61439 can handle 16kA if backed up satisfactorily. Its the thermal constraints of the conductors... Particularly with mcbs thats the real concern at higher fault currents. Especially when t&e is launched in without a second thought.
It's insane to consider 16 kA in any domestic environment. It's simply not a number that will ever be approached. I wonder if they standards people are just carrying over some extreme numbers from industrial settings.
Yeah, it's an interesting note in the guidance that I'd not really come across before so thought it was worth a mention. 🤔 Trying to be as thorough as possible without it getting overwhelming or confusing. 😃
In fairness you get a house parked up next to the substation it can get pretty tasty and in urban centers can be a lot higher than expected. I've been in a few where the t&e installed wasn't cutting it because of the reduced CPC and high fault currents. Not that anyone else seems to worry about it.
Take the free electrical design training module here 👉 training.efixx.co.uk/course/introduction-to-electrical-design-cpd-in-association-with-bg-electrical
Awesome to see people focusing on design. Keep up the great work and I will watch with interest!
Dear Joe, Have to done any more avanced design? ifso can you plese add a link thank you.
Seems strange we use the c min value of 218.5V in the calculation for earth fault values when a minimum permissable voltage value in the esqcr regulations is 216v
You should make a video explaining what CPD means. I've been watching your channel for over a year (probably 2 now) and although I have learnt loads from you I still don't know what CPC is
Continuing Professional Development, basically keeping on learning all through your career. 👍
CPD , CPC or both?
CPD is a Circuit Protective Device, e.g. MCB to BS 60898 or RCBO to BS 61009.
CPC is defined in Part 2 of BS 7671.
CPD - continuing professional development.
CPC - circuit protective conductor.
So yeah enclosures to 61439 can handle 16kA if backed up satisfactorily. Its the thermal constraints of the conductors... Particularly with mcbs thats the real concern at higher fault currents. Especially when t&e is launched in without a second thought.
It's insane to consider 16 kA in any domestic environment. It's simply not a number that will ever be approached. I wonder if they standards people are just carrying over some extreme numbers from industrial settings.
Yeah, it's an interesting note in the guidance that I'd not really come across before so thought it was worth a mention. 🤔 Trying to be as thorough as possible without it getting overwhelming or confusing. 😃
In fairness you get a house parked up next to the substation it can get pretty tasty and in urban centers can be a lot higher than expected. I've been in a few where the t&e installed wasn't cutting it because of the reduced CPC and high fault currents. Not that anyone else seems to worry about it.