225.31 Disconnecting Means

[kjw444]

For a detached garage with one lighting circuit would you need to provide a disconnect? I thought you only needed a disconnect for more than one circuit is that correct?

 

[1793]

For a detached garage with one lighting circuit would you need to provide a disconnect? I thought you only needed a disconnect for more than one circuit is that correct?

I would say start at Article 225 Part II -- 2005

 

[stickboy1375]

ART 225.31... its pretty clear. The only thing you would NOT need is a ground rod, this goes for multiwire branch circuits as well. Now that you know you need a disconnect, read 225.32 for the location...

 

[normbac]

225.38 Disconnect Construction.
Disconnecting means shall meet the requirements of 225.38(A) through (D).
Exception: For garages and outbuildings on residential property, snap switches or sets of 3-way or 4-way snap switches shall be permitted as the disconnecting means.

 

[stickboy1375]

225.38 does not say you need a disconnect, only the way the disconnect is to be constructed....

 

[kjw444]

Thanks for clearing everything up. Now days around here its sort of odd to have a detached garage for new construction.

 

[stickboy1375]

Thanks for clearing everything up. Now days around here its sort of odd to have a detached garage for new construction.

This rule goes for ANY outbuilding, not just a garage...

 

[infinity]

This rule goes for ANY outbuilding, not just a garage...

Actually it is required for any structure. This could be a wooden post stuck into the ground. And you are correct the requirement for the disconnect is found in 225.31.

 

[stickboy1375]

Actually it is required for any structure. This could be a wooden post stuck into the ground. And you are correct the requirement for the disconnect is found in 225.31.

Thanks for the correction, sometimes I forget to use the correct terminology...

 

[infinity]

Thanks for the correction, sometimes I forget to use the correct terminology...

Actually this one I learned from my own mistake from an old thread that had 4 receptacles with 4 circuits on a wooden post.

 

[George Stolz]

I think they about covered the bases on this, but there are also pictures on the FAQ on this topic.

Actually this one I learned from my own mistake from an old thread that had 4 receptacles with 4 circuits on a wooden post.

It's kind of odd that such an installation would require grounding electrodes, but I vaguely remember thinking at the time that I couldn't come up with a better way to word the rule.

 

[stickboy1375]

I think they about covered the bases on this, but there are also pictures on the FAQ on this topic.


It's kind of odd that such an installation would require grounding electrodes, but I vaguely remember thinking at the time that I couldn't come up with a better way to word the rule.

I'd have two wooden posts before I drove ground rods... :grin: