detached garage one circuit; grd rod, disconnect required ?

[Stevenfyeager]

For a residential detached garage with only one branch circuit (20 amp, single pole), is a ground rod or disconnect required ?
Thank you.

 

[SSDriver]

250.32A Exception. Allows you to not need a ground rod for a single circuit( or single MWBC) as long as you have an equipment grounding conductor in the conduit for a detached building.

As far as disconnecting means, I think you still need to have a disconnect. That can be a simple snap switch though. Someone else may chime in with more information on disconnect requirements.

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[Stevenfyeager]

250.32A Exception. Allows you to not need a ground rod for a single circuit( or single MWBC) as long as you have an equipment grounding conductor in the conduit for a detached building.

As far as disconnecting means, I think you still need to have a disconnect. That can be a simple snap switch though. Someone else may chime in with more information on disconnect requirements.

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Thank you. I was thinking no rod and just a two pole switch inside the garage.

 

[Beaches EE]

Correct. No ground rod and a snap switch as the disconnect for a single circuit or MWBC to the detached garage.

 

[Frank DuVal]

Thank you. I was thinking no rod and just a two pole switch inside the garage.

Two pole? It is one circuit. Maybe one SP switch for light and one SP switch for everything as disconnect?

 

[infinity]

2 pole, hot leg and neutral disconnect?

 

[Dennis Alwon]

Two pole? It is one circuit. Maybe one SP switch for light and one SP switch for everything as disconnect?

a multiwire branch circuit is considered one circuit for this section of the code

 

[Dennis Alwon]

Here is the section

225.30 Number of Supplies. A building or other structure that is served by a branch circuit or feeder on the load side of a service disconnecting means shall be supplied by only one feeder or branch circuit unless permitted in 225.30(A) through (E). For the purpose of this section, a multiwire branch circuit shall be considered a single circuit. Where a branch circuit or feeder originates in these additional buildings or other structures, only one feeder or branch circuit shall be permitted to supply power back to the original building or structure, unless permitted in 225.30(A) through (E).

 

[LarryFine]

There's no need to disconnect the neutral. 1P for 120v, 2P for 240v.

 

[tom baker]

Are there two pole snap switches rated for 240V (IE a MWBC 120/240 V)

 

[LarryFine]

There are. They won't have a break-away tab between terminals.

 

[Beaches EE]

One such device is a 1222-2: