Running the Neutral Through a Circuit Breaker
Posted: Wed Feb 08, 2023 5:54 pm
Hi Guys,
I have been asked to install some cabling in an industrial site.
This is all engineered by an aussie company. Part of the spec is to install a multicore cable as a voltage reference from a metering cabinet to be measured in a control cabinet.
This is 3ph and Neutral, all tapped off HRC fuses, then run to a 2amp, 4-pole MCB, then run to the other cabinet for monitoring.
What are the requirements/limitations around breaking the neutral please?
I guess it doesnt have to run through a breaker?
Can I run 3ph through a 3-pole MCB and Neutral through a 1-pole MCB as they are also suggesting?
I am thinking of temporarily runing phases through a breaker and Neutral straight out - no problem?
The metering and control cabinets are just a couple of meters apart.
Thanks
I have been asked to install some cabling in an industrial site.
This is all engineered by an aussie company. Part of the spec is to install a multicore cable as a voltage reference from a metering cabinet to be measured in a control cabinet.
This is 3ph and Neutral, all tapped off HRC fuses, then run to a 2amp, 4-pole MCB, then run to the other cabinet for monitoring.
What are the requirements/limitations around breaking the neutral please?
I guess it doesnt have to run through a breaker?
Can I run 3ph through a 3-pole MCB and Neutral through a 1-pole MCB as they are also suggesting?
I am thinking of temporarily runing phases through a breaker and Neutral straight out - no problem?
The metering and control cabinets are just a couple of meters apart.
Thanks