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What are the NEC rules for sizing conductors terminated on a circuit breaker?
Issue:   How to determine what size wire should be used on a circuit breaker Product Line:   Molded Case Circuit Breakers Environment:   All Circuit...
What is a "fully rated" system verses a "series rated" system?
Issue: Determining the SCCR of a system Product Line: Panelboards, switchboards, molded case breakers, fusible switches Environment: All Square D...
For circuit breakers that are switch-duty rated, will the breaker have an SWD marking?
Issue: Does an SWD rated circuit breaker have a visible SWD marking somewhere on the breaker? Product Line: Circuit Breakers Environment: Circuit...
Are the sub-feed lug kits for the I-Line panelboards, such as catalog number SL250 rated for DC voltage?
Issue: Are the sub-feed lug kits for the I-Line panelboards, such as catalog number SL250 rated for DC voltage? Product Line: I Line Panelboards Environment:...
Are the NQ/NF panelboards CSA rated?
Issue: Are the NQ/NF panelboards CSA rated? Product Line: Panelboards Environment: Application Cause: Specifications Resolution: Yes, they have a...
What is DIVQ and do our circuit breakers comply?
Product Line: MCCB's Resolution: DIVQ is a subset of UL489 pertaining to service entrance and our products meet this.  Please see link for more information....
How many faults can a breaker interrupt?
Issue:   What number of short circuits or faults are Square D breakers rated to interrupt? Product line:   Circuit breakers Environment:  UL489 listed...
What is clamping voltage?
Product Line:  Surge Protective Devices (SPDs) Environment:  UL 1449 3rd edition Resolution: This is the voltage level at which the surge protection...
Does a fire pump circuit breaker need to have a red handle?
Issue: Does a fire pump circuit breaker need to have a red handle? Product Line: Molded Case Circuit Breakers Environment: Markings for Fire Pump...
Can Square D Panelboards be built to meet seismic standards? If so, to what standards are the panels built?
Issue: Can Square D Panelboards be built to meet seismic standards? If so, to what standards are the panels built? Product Line: Panelboards Environment:...
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