Hi All,
Happy new year to you all!
I’m working for an engineering company, been here for a few years.
im currently working towards my NVQ level 3 in electrical maintenance and I’m in the middle of supplying a 100A Distribution board from a newly upgraded main 250A board. When the new board was installed I asked the sub contractors to run a armoured cable from this new board to the 100A board but they only supplied a 4 core 25mm cable.
Obviously this 100A board needs 3 phase, neutral and earth (5 core)
I have read somewhere that the armour of the cable can be used as the earth?
personally that doesn’t sound good practice?
any advice will be much appreciated! Thanks
Happy new year to you all!
I’m working for an engineering company, been here for a few years.
im currently working towards my NVQ level 3 in electrical maintenance and I’m in the middle of supplying a 100A Distribution board from a newly upgraded main 250A board. When the new board was installed I asked the sub contractors to run a armoured cable from this new board to the 100A board but they only supplied a 4 core 25mm cable.
Obviously this 100A board needs 3 phase, neutral and earth (5 core)
I have read somewhere that the armour of the cable can be used as the earth?
personally that doesn’t sound good practice?
any advice will be much appreciated! Thanks