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@sparksburnout makes the case for the prosecution"I am planning of running a swa fed from 32a mcb from the main board to a sub board." ????
Discuss New sub board for shed swa advice. in the Electrical Forum area at ElectriciansForums.net
@sparksburnout makes the case for the prosecution"I am planning of running a swa fed from 32a mcb from the main board to a sub board." ????
@netblindpaul since you pressed Disagree, I'm looking forward to your explanation or edit did you mean you have to earth from the head end?earthing the armour at the downstream end is OK but it would slow down the disconnection time for faults near the origin. and hopefully no extraneous conductive parts in the outbuilding?
Yes, you must connect the SWA to the installation earthing system at the supply end.@netblindpaul since you pressed Disagree, I'm looking forward to your explanation or edit did you mean you have to earth from the head end?
Yes, you must connect the SWA to the installation earthing system at the supply end.
You should see that when you do your design FMEA.
I'm not an electrician but do you mean the physical connection must be at the supply end, or just that the armour has to be connected to the earthing system that protects it?Yes, you must connect the SWA to the installation earthing system at the supply end.
You should see that when you do your design FMEA.
Regulations 3, 4, 7, 8, & 9Reg number please
One potential failure mode yes.I'm not an electrician but do you mean the physical connection must be at the supply end, or just that the armour has to be connected to the earthing system that protects it?
I guess you're suggesting if the cable is cleanly cut quickly enough (5s disconnection time) it may leave an unprotected live conductor physically separated from the cpc that protects it, and possibly shorted to the now floating armour.
Regulations 3, 4, 7, 8, & 9
What are these occasions then?There are occasions when earthing the armour [when a seperate cpc exists in the cable] can only be carried out at the 'load' end and I can't see any reason why this is detrimental to safety when done correctly. I wish people would stop posting misleading nonsense.
Look them up then.That I simply do not believe .....
Look them up then.
No Murdoch they are real Regulations, not clauses.Can’t this week as my regs book is at home BUT the numbers you quote are not actual regs, they are sections
So best you be a little more constructive with you input ......
No Murdoch they are real Regulations, not clauses.
If you have access to the internet, which you obviously do, then you can look this up.
Murdoch they are proper regulation numbers, you are now just showing your ignorance.What absolute carp.
Proper regs numbers to back up your somewhat dubious claims please
Or do we need a new rating “fake reg”
Murdoch they are proper regulation numbers, you are now just showing your ignorance.
BS 7671 is not the be all and end all.
These are the Regulations that you will be prosecuted under.
BS 7671 is your Regulation 29 defence if followed.
Try the LAW.Regulations in what publication ..... Jackanory?
Try the LAW.
No your question was, what REGULATION, you actually said in post #23 "Reg number please"Hum ...
I think you need to calm down and go back and answer the original point again.
There is no law stating that swa must be earthed at the supply end ...
The question was what is the BS 7671 reg number that you believe refers this to
Reply to New sub board for shed swa advice. in the Electrical Forum area at ElectriciansForums.net
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