NEC 230.67(B) Exception

[jared albrecht]

I have a 2000 amp service that has numerous commercial loads and then after several panelboards down the line, feeds a 125 amp panel in a dwelling unit.

I am trying to determine if I need the surge protection at the service or just in the panel in the dwelling?

the exception is not clear as to where the SPD can be placed. it states "at each next level distribution equipment downstream", does that mean every panel downstream in the direction of the dwelling unit, of the service if not located at the service?

 

[tom baker]

Is the dwelling unit feeder panel new or existing, was it installed under the 2020 NEC?

 

[jared albrecht]

entire service is new, and the dwelling unit is new, installed under the 2020 nec

 

[Dennis Alwon]

I believe you can have surge protection just for the panel at the feeder.B) Location

(B) Location.


The SPD shall be an integral part of the service equipment or shall be located immediately adjacent thereto.
Exception:
The SPD shall not be required to be located in the service equipment as required in (B) if located at each next level distribution equipment downstream toward the load.

 

[jared albrecht]

I am planning on having it as an integral part of the panel in the dwelling

 

[Dennis Alwon]

I am planning on having it as an integral part of the panel in the dwelling

I edited my post before you posted

 

[infinity]

Is it even required for a dwelling unit panel that is not service equipment?

 

[petersonra]

The way it is written appears to me that if it is not at the service point it has to be in all the downstream panels.