Put your Hilti away!
A manufactured 3mm steel plate silimar to the profile of capping to cover the tails would suffice and wouldn't require earthing.
Yes it would require earthing. why do you think it wouldn't. It's a metal barrier and as such the same as galv conduit or trunking.
Wouldn't have to be if it was earthed.However, the interesting question is would it be strong enough to prevent penetration by nails screws and the like .
Err.... No.If I understand the 17th edition correctly
If they are >50mm deep they can be anywhere. If they are <50mm deep and not mechanically protected etc they will need to be in safe zones and be RCD protected.then I have the following options:
1. Bury the meter tails in excess of 50mm into the internal blockwork and run them to the CU. I understand that they must also be run within the safe zones.
Conduit would not require earthing if the cables are more than 50mm deep. But then at >50mm conduit isn't needed anyway.2. Mechanically protect the tails with steel conduit and run to the CU. This conduit would also require earthing.
So if you used conduit would you not bury it?Option 1 also entails a large degree of channelling which is time consuming.
Earthing conduit is not hard.Option 2 has the issue of still having to channel the conduit partly into the wall so as it won't be seen and earthing it.
Just use SWA or pyro and be done with it.Anyone think of any other options?
Just use SWA or pyro and be done with it.Anyone think of any other options?
Wouldn't have to be if it was earthed.However, the interesting question is would it be strong enough to prevent penetration by nails screws and the like .
Why not?
Err - wasn't it my turn to not read all of 522.6 properly?Metal capping isn't strong enough to prevent penetration by nails, screw and the like. Are you suggesting it would be adequate if it was earthed?
Why couldn't swa or pyro be glanded to the enclosure of the switchfuse in the meter cabinet?It would involve a lot of messing about. You couldn't connect either directly into the meter terminals so you would need at least one connection involving DI tails.
A manufactured 3mm steel plate silimar to the profile of capping to cover the tails would suffice and wouldn't require earthing.
Yes it would require earthing. why do you think it wouldn't. It's a metal barrier and as such the same as galv conduit or trunking.
Chris, have a read of 522.6.6(iv)
Why couldn't swa or pyro be glanded to the enclosure of the switchfuse in the meter cabinet?It would involve a lot of messing about. You couldn't connect either directly into the meter terminals so you would need at least one connection involving DI tails.
Must the cables be hidden in the wall?
You could surface-mount them or use surface trunking or maybe run them under the floor.
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