Happy Valley Posted July 6, 2021 Share Posted July 6, 2021 We are due to pour concrete into our ICF wall next week and are currently putting pipes in for various services beforehand. Can't get hold of the electrician atm! We will be having a single phase electric installation for our 160sq m home with the meter box on an outside wall. Question is how many tails need to go through the wall and what diameter are each tail? Also can they go through the same hole or are they required to be separate? Link to comment Share on other sites More sharing options...
gravelrash Posted July 6, 2021 Share Posted July 6, 2021 2 tails and earth- use a short length of 32 or 40mm waste pipe. 1 Link to comment Share on other sites More sharing options...
ProDave Posted July 6, 2021 Share Posted July 6, 2021 Black 65mm duct if you can find an offcut. If not a bit of black rainwater downpipe. Do not under any circumstances use blue water pipe and then get offended when the electrician refuses to feed cables through it. 2 Link to comment Share on other sites More sharing options...
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