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NEC 2023 - 215.5 Compliance

A

anbm

Senior Member
Location
TX
Occupation
Designer

See new code language for article 215.5 below, how do we meet the underline items? i.e. showing square feet of the area each feeder will serve...

215.5 Diagrams of Feeders​

If required by the authority having jurisdiction, a diagram showing feeder details shall be provided prior to the installation of the feeders. Such a diagram shall show the area in square feet of the building or other structure supplied by each feeder, the total calculated load before applying demand factors, the demand factors used, the calculated load after applying demand factors, and the size and type of conductors to be used.
 
Oh, it only requires sq.ft # to be shown if the feeder supplies a building or other structure.
 
The key is the first seven words....you don't do anything unless the AHJ tells you that you must.

Also that is not a new requirement. The oldest code I have on my computer is the 99 and that requirement is in the 99 code.
 
don_resqcapt19 said:
The key is the first seven words....you don't do anything unless the AHJ tells you that you must.

Also that is not a new requirement. The oldest code I have on my computer is the 99 and that requirement is in the 99 code.
Click to expand...
They did ask for it in fact 😃
 
anbm said:
They did ask for it in fact 😃
Click to expand...
So you do the load calculations for each feeder and provide a sketch showing the areas served by each feeder.
The load calculations should have been done when the feeders were designed so they could be correctly sized.
 
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