Technical FAQs

Ask a Question

Video: What is the maximum QO or QOB branch breaker (not sub-feed breaker) that can be installed in an NQ panelboard?

Issue:  
What is the highest ampacity QO or QOB branch breaker (not sub-feed breaker) that can be installed in an NQ panelboard?

Product Line:  
Branch breakers for distribution panelboards.

Environment:  
NQ panelboards sold in North America.

Resolution:  
The maximum QO branch breaker that can be installed in an NQ panel is a 2-pole 125Amp, 3-pole 100Amp. The maximum QOB branch breaker that can be installed in an NQ panel is a 2 or 3 Pole, 150Amp.

The following video demonstrates how to install 110-150A QOB VH breakers:

 
Was this helpful?
What can we do to improve the information ?