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PV flush downleads

lyledunn

New 3-storey house. PV panels on roof and inverter in garage on ground floor. Not unreasonably the client wants the downleads flush mounted. The proposal was to flush mount them in the masonry walls in steel conduit for the route from the loft area, down through bedroom on the top floor and TV room on first floor to garage on ground. No through boxes or the like to indicate cabling below. This is not a one-off situation as the client has a site of 40+ units. Done carefully, I can’t see too much of an issue but I just feel a tad uncomfortable. Any views?

  • 0 in reply to AJJewsbury

    Sort of, but to be fair I'm not sure that any of the UK regs are intended specifically to cover this case very well, so my advice is based on what would be safest - if say the negative wire is grounded, and then you drill into  the positive at 300Volts DC but current limited to 10A at full sunshine, what do you expect to happen ?

    Or, put another way would you not earth the metal conduit ?

    M.

  • 0

    Or, put another way would you not earth the metal conduit ?

    To concentrate the mind on providing protection by means of double/reinforced insulation suitable for the environment? (712.410.102)

       - Andy.

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