Is it permitted to have a load in excess of the branch-circuit ampere rating?

A load in excess of the branch-circuit ampere rating is not permitted under the National Electrical Code (NEC) guidelines. Whenever a circuit's ampacity is exceeded, there is a risk of overheating, which can lead to insulation failure, equipment damage, and potentially create a fire hazard. The branch-circuit rating is established to ensure safety and adequate performance of electrical installations.

Maintaining the loads within the specified ampere ratings ensures reliable operation while safeguarding the electrical system. When circuits are overloaded, it can also lead to nuisance tripping of breakers, which is further indication that the load should not exceed the established rating. Adhering to these limits is crucial for ensuring both the safety of the installation and compliance with the NEC.