Issue:
Product Design feature
Product Line:
QO load centers
Resolution:
Non-Class CTL (Circuit Limiting) load centers do not have a rejection feature that would restrict the number of tandem breakers that can be installed into them. As a result, the load center could be overloaded. A code change corrected this for safety reasons and all load centers (since approximately 1965) must be designed to meet CTL standards. Load centers that are not designed to take tandem breakers have a rejection feature to prevent them being installed. To see the reject feature see the FAQ Video: How to determine if a QO load center will accept the QOT type tandem circuit breakers and where do they mount in the load center?.
Released for: Schneider Electric Canada
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