Technical FAQs

Ask a Question

When is a neutral CT required?

Issue:
When is a neutral CT required?

Product Line:

Environment:

Cause:


Resolution:
A neutral CT is only required when there are loads that produce neutral current.
A neutral CT is required when an electroni-trip circuit breaker has a ground-fault option (alarm or trip) and is used on a 4 wire system. Neutral current must be factored in with phase current for accurate sensing.
A neutral CT is also required for the GFM modules when used on a 4-wire system.


CTA-ID : 1559
Was this helpful?
What can we do to improve the information ?