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Old 11-27-2016, 05:30 PM
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When I built my garage, there were a couple structural issues. Ine was with some stair treads where they turned the corners. Another was with cross-bracing on some of those arch thingies, for the roof.

The inspector showed up 2 hours late, mentioned the infractions, but gave me a clean ticket with the promise I'd fix it. Of course, I told him I didn't have anywhere to go or anything to do that day, so it was cool that he was late. No biggie.
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Old 11-27-2016, 05:45 PM
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Seeing as you are over 200' away and likely didn't bury a ground wire going back to the main, yes you need to drive ground rods. There are pretty specific rules about them now a days. Particularly that the ground cable has to be continuous and not split from one rod to the other. There is also a certain potential that they look for when measuring the rods, and if that number isn't right they will ask you to drive another, up till about 6 rods before they figure you wont get any better. All according to the sparkies I take advice from.

I ran my ground back to the main. Another thing to note, since I ran mine back to the main panel, I remove the neutral bonding screw to the ground in the sub panel. If you run a earth ground, then I'm pretty sure you have to bond the two in the sub.
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Old 11-27-2016, 07:45 PM
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If someone only buried 3 conductors then all you can have is 120 volts, a 4-wire feed has been required by the NEC for a number of editions. The days of running 3 conductors to a outbuilding is long gone.
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Old 11-27-2016, 10:34 PM
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Quote:
Originally Posted by weldor2005 View Post
Seeing as you are over 200' away and likely didn't bury a ground wire going back to the main, yes you need to drive ground rods. There are pretty specific rules about them now a days. Particularly that the ground cable has to be continuous and not split from one rod to the other. There is also a certain potential that they look for when measuring the rods, and if that number isn't right they will ask you to drive another, up till about 6 rods before they figure you wont get any better. All according to the sparkies I take advice from.

I ran my ground back to the main. Another thing to note, since I ran mine back to the main panel, I remove the neutral bonding screw to the ground in the sub panel. If you run a earth ground, then I'm pretty sure you have to bond the two in the sub.
I don't believe you can bond the two in the sub, only the main.

I did pull a separate ground therefor I will add a ground bar, and ground rods, but it will be isolated from the neutral. Like Mac said.

Pops, you're 1 wire short, but you probably knew that
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Old 11-28-2016, 08:31 AM
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Hell if I know, I ran mine from the meter, I didn't go to the Main with my Sub.
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  #16  
Old 11-28-2016, 09:27 AM
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Quote:
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... Pops, you're 1 wire short, but you probably knew that
People have said I'm a few dB down, but in this case there are three 2/0 wires and an additional ground wire.
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