Cable rating/MCB rating

[netblindpaul]

What if the heater bands are 400V?...

 

[Knobhead]

No problem with neutral at the machine then. Balancing the load and neutral currents moves down the line to the DB and then on to the point of origin. Balancing loads is at the end of the day a juggling act. I’ve worked on systems with multiple 3MVA two phase loads supplied direct from the 11KV main boards. No problem with neutrals but a hefty financial walloping by the DNO! I was asked to find a way to balance out the loading using redundant gear we had on site, the company wouldn’t pay for it even though it would have saved thousands a month. I GAVE UP and walked away!