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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?
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.
 
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.
One potential failure mode yes.
 
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. :rolleyes:
What are these occasions then?
 
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.
 
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
No your question was, what REGULATION, you actually said in post #23 "Reg number please"
Which I then gave you and since then you have been disagreeing with me.
You said NOTHING about BS 7671, you asked for a Regulation, not a clause in a standard.
Remember, Regulations are law, BS 7671 is a standard.
The numbers I quoted are the law that you would be in breach of.
Try THE, Electricity At Work Regulations 1989 (As Amended).
Also if you want clauses from some industry guidance try...
522.6.201, .202, .203, .204
522.8.10
543.3
IET GN8 guides you to EAWR on this topic just for your guidance.
 

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