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Exported PME to steel floodlight columns, public tennis courts

Patrick Hammond

Hi

We're doing an EICR at a local tennis club. It has a number of  3 phase floodlights mounted on galavanised columns illuminatimg outdoor tennis courts.

They are earthed via an exported PME TNCS system which was surprising because we'd imagined they would have sunk an earth rod at each column and not exported the PME.

The location is open to the public. Circuits not 30mA RCD protected foir additional protection.

I'm no

Many Thanks for your help

Parents
  • 0

    Is it any more dangerous than a PME lamp-post in the street, or a light at a PME supplied bus shelter.?  If there is contact to the poles that  means that large areas of easily touched fence are also at neutral potential rather than earth its not great, but if it is only the columns themselves, and they are in well drained ground,  perhaps it is more of a note of not good practice. To actually be dangerous needs an undetected PEN fault, and some one to touch it while in good contact with the terra firma so long as one of those is missing you are OK. Without RCD cover it is a lot better not being TT, though an RCD plus TT would be my preferred if starting from scratch.

    M.

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  • 0

    Is it any more dangerous than a PME lamp-post in the street, or a light at a PME supplied bus shelter.?  If there is contact to the poles that  means that large areas of easily touched fence are also at neutral potential rather than earth its not great, but if it is only the columns themselves, and they are in well drained ground,  perhaps it is more of a note of not good practice. To actually be dangerous needs an undetected PEN fault, and some one to touch it while in good contact with the terra firma so long as one of those is missing you are OK. Without RCD cover it is a lot better not being TT, though an RCD plus TT would be my preferred if starting from scratch.

    M.

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