We are having a complete rewire of the house done by a contractor. However he has got ahead of us and he is likely to be finished before I have got the shed and green house built. He will leave a blank on the main consumer unit for the shed/greenhouse supply and the builders will put in a duct. If we have enough money left the electrician will also get the shed wiring job. If not I will have to do it.
The iee regs (522-10-01) state that wiring should be protected from rodents gnawing. I assume that the SWA feed from the Consumer unit to the distribution box in the shed is ok. But does this mean that I have to use metal boxes and steel conduit in the shed or are plastic boxes and conduit ok.
With the greenhouse I will have to ensure equipotential bonding of the metal frame and staging. This means running a 10mm earth back to the main earth point in the house. I am not clear if the same applies to earthing the conduit or if the earth on the 4mm SWA is acceptable. That is if metal conduit is required.
Finally have I got this right. If a RCCB is fitted to the main consumer unit there is no need to fit any other residual current devices to either the distribution panel in the shed or to any socket outlets. Indeed there is a likelihood that fitting devices in series could interfere with their performance
Many thanks for any advice given
The iee regs (522-10-01) state that wiring should be protected from rodents gnawing. I assume that the SWA feed from the Consumer unit to the distribution box in the shed is ok. But does this mean that I have to use metal boxes and steel conduit in the shed or are plastic boxes and conduit ok.
With the greenhouse I will have to ensure equipotential bonding of the metal frame and staging. This means running a 10mm earth back to the main earth point in the house. I am not clear if the same applies to earthing the conduit or if the earth on the 4mm SWA is acceptable. That is if metal conduit is required.
Finally have I got this right. If a RCCB is fitted to the main consumer unit there is no need to fit any other residual current devices to either the distribution panel in the shed or to any socket outlets. Indeed there is a likelihood that fitting devices in series could interfere with their performance
Many thanks for any advice given
, There is a plywood panel with a large brass earth screw on it. Where the (bare) wires connected to it come from or go to is an unknown as they all are buried in the plaster. No labels on anything, no sign of an earth rod anywhere.
