- Joined
- 27 Jan 2008
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- 23,664
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- Location
- Llanfair Caereinion, Nr Welshpool
- Country
If I give an example, where I work we have the blue 16 amp sockets for powering the yellow bricks when working outside, these are also used during events for anything from the steam organ to volunteers caravan.
Likely all RCD protected, but not so sure of supply type, it could well be TN-C-S.
I would guess the yellow brick connects the input earth to output earth? Seen no provision for connecting an earth rod, and even inside the buildings some have steel rails which extend for 8 miles outside the building, not looked to see if bonded, but not seen any bonding.
Of late increased use of caravans and the like, with sockets being used for their supply, although not fitted with that in mind.
If the PEN was lost and rails are earthed likely no real danger, may get some sparks when changing the points, but the question is should the PEN be lost and it is a TN-C-S supply who is at fault, the person who plugs into the supply, or the person who fitted the socket?
Likely all RCD protected, but not so sure of supply type, it could well be TN-C-S.
I would guess the yellow brick connects the input earth to output earth? Seen no provision for connecting an earth rod, and even inside the buildings some have steel rails which extend for 8 miles outside the building, not looked to see if bonded, but not seen any bonding.
Of late increased use of caravans and the like, with sockets being used for their supply, although not fitted with that in mind.
If the PEN was lost and rails are earthed likely no real danger, may get some sparks when changing the points, but the question is should the PEN be lost and it is a TN-C-S supply who is at fault, the person who plugs into the supply, or the person who fitted the socket?