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This is what I thought but apparently the manufacturer insists it’s spread over the phases and the same has been advised to many other units sold and setup by electricians to this and there’s never been any issues. Issue I have is it will involve a 50 metre armoured cable wire run upgrade so I...

Thanks for the reply’s, I’ve basically got the Italian manufacturer saying it’s definitely approx 70 amps spread over three phases and not per phase, they use the below calculation. But British electricians state it’s per phase based on that information so I don’t know who to go with…and wonder...

Hi, I’m trying to buy/install a large commercial boiler which is 3 phase and I’m trying to understand the supply requirement to see if my existing 3 phase supply can run it. The unit requires approximately 70amps but what I’m getting mixed feedback on is if it’s 70amps per phase required or if...