C
Colonel Hathi
Hi
I have been asked to provide power to a building at the foot of the customer's 30 metre garden (32A ring and 6A lighting circuits).
When I calculate the required cable size in terms of voltage drop, 6mm SWA is just over limits.
I am using 6.4 mV/A/m 36A Demand and 30 metre run.
6.4*36*30=6912mV - 6.912 volts
6.912/230=3.005%
The Regs seem quite specific - but is this close enough to the 3% max?
Going to 10mm cable would bring me right down to 1.78%
Any views much appreciated.
Thanks
CH
I have been asked to provide power to a building at the foot of the customer's 30 metre garden (32A ring and 6A lighting circuits).
When I calculate the required cable size in terms of voltage drop, 6mm SWA is just over limits.
I am using 6.4 mV/A/m 36A Demand and 30 metre run.
6.4*36*30=6912mV - 6.912 volts
6.912/230=3.005%
The Regs seem quite specific - but is this close enough to the 3% max?
Going to 10mm cable would bring me right down to 1.78%
Any views much appreciated.
Thanks
CH