was called to a friends business the other day as he lost all power, tells me over the phone they have an isolator open and one of the phases has burnt out at the terminal.
he sad they have lost power several times before
they have an old 100a MEM excel TPN switch fuse straight from the meter to a dis board other side of the unit. 25mm tails
I managed to replace the burnt out tail and contact block and get them operational.
could this have been a simple loose termination or are the phases not balanced correctly.
I did get them to power up everything like it was a busy day so flat out. clamp meter showed a brief 120A load when th booth fans motors kicked in, then a constant70-80A on all phases.
he sad they have lost power several times before
they have an old 100a MEM excel TPN switch fuse straight from the meter to a dis board other side of the unit. 25mm tails
I managed to replace the burnt out tail and contact block and get them operational.
could this have been a simple loose termination or are the phases not balanced correctly.
I did get them to power up everything like it was a busy day so flat out. clamp meter showed a brief 120A load when th booth fans motors kicked in, then a constant70-80A on all phases.