Remote Garage Service

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howardrichman

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I recentely wired a remote residential Garage 25ft. from house w/ two circuits (20Aoutlets, and 15A for lighting). Inspector informed me If I install a panel, I'de have to install two ground rods and a main, sa. a service entrance. I believe if there were only 1 ckt in garage, I could have used a ML panel and no ground electrodes. Since I'm keeping two ckts, I figure the best alt. is to just run a 12-3 UF to the garage and use existing panel as a J-box, and should pass. I'm presently trying to find the code for a remote residential garage.
any here run into this?
Howard...
 
howardrichman said:
I recentely wired a remote residential Garage 25ft. from house w/ two circuits (20Aoutlets, and 15A for lighting). Inspector informed me If I install a panel, I'de have to install two ground rods and a main, sa. a service entrance. I believe if there were only 1 ckt in garage, I could have used a ML panel and no ground electrodes. Since I'm keeping two ckts, I figure the best alt. is to just run a 12-3 UF to the garage and use existing panel as a J-box, and should pass. I'm presently trying to find the code for a remote residential garage.
any here run into this?
Howard...
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I am a bit confused here-- if you install a panel then you would need no more than 6 handles to disconnect the garage. You would still need 2 ground rods and as of 2008 you would need a separate EGC (4 wires).

If you install a 12/3 UF then it would be considered a single feeder and you would not need a panel nor ground rods but you would need a means to disco the circuits at the garage ( a DP switch will suffice).
 
Did you actually install a service or did you install a feeder from the existing building?

Assuming you are feeding this from the existing building you would need to read part II of article 225.

Roger
 
Dennis Alwon said:
I am a bit confused here-- if you install a panel then you would need no more than 6 handles to disconnect the garage. You would still need 2 ground rods and as of 2008 you would need a separate EGC (4 wires).

If you install a 12/3 UF then it would be considered a single feeder and you would not need a panel nor ground rods but you would need a means to disco the circuits at the garage ( a DP switch will suffice).
Click to expand...

Then how would you feed those two circuits at the main panel? If they're on the same yoke, you would need a 2-pole breaker. 210.4(B).
 
480sparky said:
Then how would you feed those two circuits at the main panel? If they're on the same yoke, you would need a 2-pole breaker. 210.4(B).
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Try again-- I lost you.

12/3 fed from the house with a DP breaker to the garage. No panel just a dp switch as a disco.
 
Dennis Alwon said:
Try again-- I lost you.

12/3 fed from the house with a DP breaker to the garage. No panel just a dp switch as a disco.
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One circuit in the garage is 15, the other a 20. Read the OP.
 
480sparky said:
One circuit in the garage is 15, the other a 20. Read the OP.
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A handle tie would work for this combination or just get a 15/20 amp two pole breaker. :wink:

Roger
 
My assumption is that the wire is already run, and I'm assuming both a 14-2 and 12-2 UF. The 14 is on a 15a breaker, and the 12 on a 20.

Using a DPST switch for the garage disco, how do you disconnect both circuits back at the breakers to comply with 210.4(B)?
 
480sparky said:
My assumption is that the wire is already run, and I'm assuming both a 14-2 and 12-2 UF. The 14 is on a 15a breaker, and the 12 on a 20.

Using a DPST switch for the garage disco, how do you disconnect both circuits back at the breakers to comply with 210.4(B)?
Click to expand...
It would be a violation to have a 12/2 and a 14/2 run to the garage. I believe the op got sited and has to redo the job. He suggested the 12/3 and I agree. Until the op gives us more info I don't think we can keep guessing what he means.


I just realized what you are getting at. I see Roger has already given the answer. 2 sp breakers with a 15 and 20 with handle ties. 12/3 to the garage
 
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Thanks for help! Well I did install a 4/8 ckt ML panel in garage w/a 15, and a 20 amp ckt from garage entering it. I have not run a feeder yet. Inspector assumed I was to wire as standard 4 wire sub panel from house and insisted to add a main and grnd Electrodes. Homeowner wants to save $, and just install a 12-3 UF. I might have problem if both ckts at main panel must break simutanously, and still need a double pole switch. Might be easier to just run a 10-3 UF, install main and grnd electrodes at garage, and be done.

Thanks again; Howard...
 
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