Rooftop Disconnect

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Rooftop Disconnect

#113481 06/15/02 12:08 AM

Joined: Oct 2000

Posts: 3,672

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NY, USA

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This was atop a building I worked on. The rooftop unit was in violation due to not having this disconnect for the 120/208 pnl. Is this just because it is on the roof, exposed to rain etc. Code section?

- Eandrew

Software for Electricians

Re: Rooftop Disconnect

#113482 09/15/02 11:37 AM

Joined: Oct 2000

Posts: 2,749

Boston, Massachusetts USA

Joe Tedesco Offline

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See 440.14 Location.

[This message has been edited by Joe Tedesco (edited 12-08-2002).]

Joe Tedesco, NEC Consultant

Re: Rooftop Disconnect

#113483 09/15/02 04:28 PM

Joined: Nov 2000

Posts: 2,148

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resqcapt19 Offline

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Do all of the breakers serve the same piece of equipment? If so the disconnect would be required because 440 requires "a disconnect".
If not, I don't know why they are requiring a disconnect for the panelboard. The section Joe cited requires a disconnect for the A/C equipment, but the breakers can serve as the required means of disconnect just as well as the disconnect switch. There is no general requirement in 440 that the disconnect be lockable.
Don

Don(resqcapt19)