I am wiring a shed as follows:
40A MCB at house CU on non-RCD side feeding 3 core 6mm SWA up to shed (30m). This has been installed by NICEIC spark.
I am going to do the wiring in the shed, which will then be tested & signed off by above spark.
I had planned to use a 32A 30mA RCBO in shed CU, with a 20A radial (2.5mm) feeding 5 double sockets, 16A radial feeding 2 x 1.5kW heaters, and 6A lighting circuit.
I am now in two minds whether it would be better to just use a ring on the sockets, back it up by a 32A MCB, and use two switch spurs from the ring to feed the 1.5kW heaters, fused at 10A each.
I am of the opinion that the heaters on a separate circuit would give more headroom for the ring main (or allow a radial to be used), but is it necessary if a 32A ring is only supplying 5 double sockets? The highest loads will likely be the heaters, no compressors or anything like that going to be used.
Any advice welcome
40A MCB at house CU on non-RCD side feeding 3 core 6mm SWA up to shed (30m). This has been installed by NICEIC spark.
I am going to do the wiring in the shed, which will then be tested & signed off by above spark.
I had planned to use a 32A 30mA RCBO in shed CU, with a 20A radial (2.5mm) feeding 5 double sockets, 16A radial feeding 2 x 1.5kW heaters, and 6A lighting circuit.
I am now in two minds whether it would be better to just use a ring on the sockets, back it up by a 32A MCB, and use two switch spurs from the ring to feed the 1.5kW heaters, fused at 10A each.
I am of the opinion that the heaters on a separate circuit would give more headroom for the ring main (or allow a radial to be used), but is it necessary if a 32A ring is only supplying 5 double sockets? The highest loads will likely be the heaters, no compressors or anything like that going to be used.
Any advice welcome