Hi guys,
Been asked to wire in a compressor to a mates small unit. It’s 3phase 415v 2.2kw.
There was previously a compressor installed... and what I have in place from the board is -
40A MCB with a 20m run of 4mm 4 core + earth SWA, to a non protected 32A isolator switch mounted on the wall.
The issue I have is the compressor has a length of 2.5mm flex with a 3p+e plug. I’m planning to hard wire it in place but concerned about going from the 40A MCB + 4mm cable with a non fused isolator.
Would the best option to be either - replace the MCB in the board with a 32A or - remove the non fused isolator and install a 32A fused isolator to protect the 2.5mm cable supplying the compressor or - replace the 2.5mm cable with some 4mm?
cheers
Been asked to wire in a compressor to a mates small unit. It’s 3phase 415v 2.2kw.
There was previously a compressor installed... and what I have in place from the board is -
40A MCB with a 20m run of 4mm 4 core + earth SWA, to a non protected 32A isolator switch mounted on the wall.
The issue I have is the compressor has a length of 2.5mm flex with a 3p+e plug. I’m planning to hard wire it in place but concerned about going from the 40A MCB + 4mm cable with a non fused isolator.
Would the best option to be either - replace the MCB in the board with a 32A or - remove the non fused isolator and install a 32A fused isolator to protect the 2.5mm cable supplying the compressor or - replace the 2.5mm cable with some 4mm?
cheers