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  • I'm adding two sockets in a room. The whole room will be reskimmed.

    Right now I'm chasing in a channel to run the cables in conduit.

    How deep does the conduit need to be?

    Currently it is maybe 1mm below the existing surface. No idea how to photograph this but here is a pic.

    Any quick answers appreciated as I only have a small window of time left for the messy work before everyone gets home.

    (the reason for running them through conduit was general Internet research showed this as the best belt and braces approach)

  • For maximum strength I'd want around 5mm of plaster above that.

    I expect most plasterers would skim over it anyway without any short-term issues, but if the plaster is only ~2mm thick it'll be prone to cracking there.

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