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Hello I'm propose to wire in a frost stat and IR lamp in the loft. There is a 2.5mm2 junction box nearby with one cable coming from the consumer unit and one going to the immersion heater. The box is rated 30A. Can I run 2.5mm2 t&e cable from the box to a fused connection unit (fused with 3A...

Hi again. Have checked the lighting circuits in the loft and have discovered that though each of the three circuits is fed by live 1.5mm2 cables, the neutral 1.5mm2 cable for each circuit is connected to the nearest socket junction box neutral. Doesn't this mean that the sockets and the...

Thanks all. So if I use 2.5 mm from the junction box to a 3amp fused connection unit (switched) it should be safe?

Thanks for answer. Assuming the junction box is ok to use would it be dangerous to use the 1.5mm from the junction box to the switched fcu if the load would not exceed 300 W?

Hello. I am planning to wire a light in the loft. There is a socket junction box (2.5 mm) in a convenient place. Can I take 1.5 mm live an 1.5 mm neutral (single core in each case) from the socket junction box to a switched fused connection unit (fitted with 3A fuse) and continue from there to...