Hi there all, Just a little question:
I'm in the UK. 3Ph 415V. I'm installing a compressor in my Garage. The MCB I want to use is 40A, Type D.
The compressor is 415V, 3Ph, 40A. My cable run is 30m in Trunking and Conduit into the Isolator.
I've worked out, via the 16th edition handbook that I need 10mm sq Singles to run from my Distribution board to the 40A Isolator.
Therefore I'll have 5 wires (L1,L2,L3,N and CPC).
1.What size of Earth/CPC should I run to the Machine...10mm sq? 2.Do you think 1x25mm Conduit drop will be OK for the cables... eg.. will they fit?Thanks loads for your help, Shay