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Old 09-08-2009, 10:11 AM   #1
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Wiring a garage. How does this look?


I live out in the country and am building a garage/shop. (detached.) I took some pictures of my wiring project and wanted some helpful suggestions. I am using a 100 amp subpanel. If it looks funny, I mounted it upside down. The instructions said to mount it this way if the panel was going to be bottom fed. (WHich this one is).

Also, someone on a posting forum said I need some sort of hold down kit for my main breaker in the picture???

Any help is appreciated!!!

http://www.flickr.com/photos/4...706@N03/

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Old 09-08-2009, 10:21 AM   #2
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Wiring a garage. How does this look?


The backfedmain breaker should have a holddown kit installed. If you bought the panel with the breaker already installed, the kit should also already be there.

The bare grounds should be going to the grounding bus attached to the enclosure, not to the isolated bus.

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Old 09-08-2009, 10:25 AM   #3
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Wiring a garage. How does this look?


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Originally Posted by HouseHelper View Post
The backfedmain breaker should have a holddown kit installed. If you bought the panel with the breaker already installed, the kit should also already be there.

The bare grounds should be going to the grounding bus attached to the enclosure, not to the isolated bus.

I am not sure what you mean by "backfed" but this panel did come with the main breaker but no sort of "hold down". I am not sure exactly what that is.

My panel is upside down. The instructions said to mount it that way if it will be bottom fed. "Which it will be". The grounding bus is on the left and the neutral on the right. So, are you saying my bare grounds should go on the small buss bar to the left of the main ground bus bar? That is easy enought to do but what is the difference?
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Old 09-08-2009, 11:17 AM   #4
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Wiring a garage. How does this look?


I see what looks like a green grounding screw on the bottom left
Does that connect somehow to the bus above you are using for grounds?
Usually the neutral bus is bigger since you can't double up neutrals

Ah---looks like the grounding bus you should be using is attached to the case on the left side
The grounds do need to be grounded to the case & then ground rods
Have you put in grounding rods yet?

I can't seem to see where the 2 Main hot feeds will connect
Possibly hidden by the breaker?
4 feed required, 2 hots, neutral & ground

A garage is also required to have circuits GFCI protected
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Old 09-08-2009, 11:37 AM   #5
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Wiring a garage. How does this look?


Get some support for the cables over the garage door. Those are pretty expensive staples. They scream DIY, but then you are a DIY. lol! Looks pretty good. Are you going to put up drywall?
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Old 09-08-2009, 12:40 PM   #6
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Wiring a garage. How does this look?


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Originally Posted by Scuba_Dave View Post
I see what looks like a green grounding screw on the bottom left
Does that connect somehow to the bus above you are using for grounds?
Usually the neutral bus is bigger since you can't double up neutrals

Ah---looks like the grounding bus you should be using is attached to the case on the left side
The grounds do need to be grounded to the case & then ground rods
Have you put in grounding rods yet?

I can't seem to see where the 2 Main hot feeds will connect
Possibly hidden by the breaker?
4 feed required, 2 hots, neutral & ground

A garage is also required to have circuits GFCI protected
I dont have the feeder wire yet. I believe that screw attaches the grounding buss to the cabinet. Another grounding screw came with the panel for the neutral buss but I did nto install it because I thought you were not supposed to. I do have a GFCI outlet feeding all other outlets. Have not but up the ground rods yet.
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Old 09-08-2009, 12:41 PM   #7
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Wiring a garage. How does this look?


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Originally Posted by J. V. View Post
Get some support for the cables over the garage door. Those are pretty expensive staples. They scream DIY, but then you are a DIY. lol! Looks pretty good. Are you going to put up drywall?
You mean the cables that run perpendicular from one rafter to another? I plan on maybe installing some 2x4's for support.

I really thought about putting up osb. Think that would be alright?
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Old 09-08-2009, 01:15 PM   #8
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Wiring a garage. How does this look?


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You mean the cables that run perpendicular from one rafter to another? I plan on maybe installing some 2x4's for support.

I really thought about putting up osb. Think that would be alright?
1x4 would be fine to create a raceway for support.

OSB would be ok - I used the heavy 4x8' 1/4" thick pegboard panels in my workshop. Prefinished white so did not even paint, look plenty good for a workshop, and provides ad hoc storage everywhere. I screwed them rather than nailed - makes it easy to remove/change a panel if need be in the future.
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Old 09-08-2009, 01:36 PM   #9
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Wiring a garage. How does this look?


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1x4 would be fine to create a raceway for support.

OSB would be ok - I used the heavy 4x8' 1/4" thick pegboard panels in my workshop. Prefinished white so did not even paint, look plenty good for a workshop, and provides ad hoc storage everywhere. I screwed them rather than nailed - makes it easy to remove/change a panel if need be in the future.

I like that idea. What did you use for the ceiling? Did you insulate under the pegboard?
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Old 09-09-2009, 12:49 PM   #10
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Wiring a garage. How does this look?


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Originally Posted by stryped View Post
You mean the cables that run perpendicular from one rafter to another? I plan on maybe installing some 2x4's for support.

I really thought about putting up osb. Think that would be alright?
Yea, Just so they don't sag and get caught in the door when opening or closing. Job looks good. Post pics when you get the walls up.
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Old 09-09-2009, 02:33 PM   #11
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Wiring a garage. How does this look?


Does the pegboard or OSB have a 15 minute fire rated finish?
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Old 09-09-2009, 02:45 PM   #12
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Wiring a garage. How does this look?


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Does the pegboard or OSB have a 15 minute fire rated finish?
Does a detached garage need a fire rating?
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Old 09-09-2009, 03:17 PM   #13
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Wiring a garage. How does this look?


See 334.10(3) Cables shall be concealed within walls. floors or ceilings that provide a thermal barrier of material that has a 15 minute finish rating as identified in listings of fire-rated assemblies.
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Old 09-09-2009, 03:49 PM   #14
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Wiring a garage. How does this look?


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I like that idea. What did you use for the ceiling? Did you insulate under the pegboard?
I have plywood on top of the ceiling joists providing for overhead storage - so have not a finished ceiling per se. I had thought about putting 4x8 sheets of bead board as a ceiling for aesthetics, but - it's a workshop...

And yes, I insulated under the pegboard.
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Old 09-09-2009, 04:56 PM   #15
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Wiring a garage. How does this look?


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See 334.10(3) Cables shall be concealed within walls. floors or ceilings that provide a thermal barrier of material that has a 15 minute finish rating as identified in listings of fire-rated assemblies.
NMB does not need to be concealed within walls on a garage. Many garages do not even have drywall, especially detached garages
Not even required in a basement

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