Continuous load

[Djelite]

In the code book it sometimes states to size the wire to 125% (with no mention of the ocpd) . At other times it says that the load is a continuous load( 125% for sizing wire and ocpd). Why would you size the branch circuit wire @ 125% but size the ocpd at 100%

 

[david luchini]

Basically everywhere the Code tells you to size conductors for 125% of continuous load, it tells you to size the OCPD for125% of continuous load as well.

 

[Jraef]

The conductors are sized at 125% of the LOAD.
The OCPD is sized at 100% of the CONDUCTOR. Ergo the OCPD ends up at 125% of the load...

 

[Djelite]

Basically everywhere the Code tells you to size conductors for 125% of continuous load, it tells you to size the OCPD for125% of continuous load as well.

645

 

[LadyDi]

In the code book it sometimes states to size the wire to 125% (with no mention of the ocpd) . At other times it says that the load is a continuous load( 125% for sizing wire and ocpd). Why would you size the branch circuit wire @ 125% but size the ocpd at 100%

The answer to your question is explained in the below referenced article: https://iaeimagazine.org/

Sizing Conductors for All Load Conditions

Frederic P. HartwellJuly 16, 2003Electrical InspectionsJuly/August 2003