- Reaction score
- 6
Hi all im needing some advice on installing a hot tub, the spec of the hot tub says it requires a 32amp supply, My plan is to run 6mm t+e from a 32amp mcb rcd protected down the wall and drilled out into a weather proof adaptable box, from there I will then run a 6mm 3 core swa cable clipped direct to a fence upto a rotary switch, which will then be connected to the hot tub, the run from the consumer unit to the rotary switch will be 30 metres, the voltage drop calculation (mV/A/m) x ib x L /1000 so 6.4 x 32 x 30 /1000 = 6.14vd which is under the acceptable value of 11.5v, this is my first time installing a hot tub and trying to get my head around the volt drop, do you all agree with my thoughts or am I missing something, cheers.
