Garage Remodel #5: 98% ready to call for 1st inspection

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Blog entry by Holbs posted 04-29-2013 12:11 AM 1923 reads 0 times favorited 2 comments Add to Favorites Watch
« Part 4: panelboard, remodel boxes, and pathway: check! Part 5 of Garage Remodel series Part 6: passed rough in & final in one shot! »

oooo… ALMOST ready. Caught myself in the end of doing a major booboo.
i “thought” the left buss bar was for neutrals and the right buss bar was for ground. but then i looked at the horizontal bar across the top connecting both. and i remembered my research: you can not connect neutrals and grounds in a sub-panel (this can only happen at the main disconnect panel). so i stopped and had to re-think. i get online and find out i have to order a separate part. PK23GTA is the Square D 23position ground bar i have to get at HD.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter "xylokopos/ξυλοκὀπος"

2 comments so far

View EEngineer's profile


1120 posts in 4125 days

#1 posted 04-29-2013 01:53 AM

There is also a requirement for ground to be run from the main disconnect panel. Basically, you have to run 4 wires from the main panel (Hot-Hot-Neutral_Ground) and then connect a local ground out at the sub-panel. The latest NEC damned near requires a ground rod at the subpanel.

I rewired my garage last summer… best idea I ever had! Good luck!

-- "Find out what you cannot do and then go do it!"

View Holbs's profile


2246 posts in 2541 days

#2 posted 04-29-2013 02:14 AM

i ran 6/3 nm-b (with ground…the black cable in the middle of the bunch) for a 60amp run. this sub-panel is 5 feet away from main panel.

i just got back from HD as i had to purchase the grounding bar. I installed it. Luckily, it’s near the same height as what I thought was the right side grounding bar (which in fact, is the right neutral side). I’ll have to take a picture for an update.
I am un-sure how far along I must go for the 1st rough-in inspection. That is why I have not terminated the blacks & reds and the 6/3 cable. Nor have I terminated wires onto plugs yet.
Also, I cut out the drywall on the backside of the main panel so I can run in the 6/3. I’ll have to ask the inspector something because all of the existing house wires (about 10-12 of them including 6/3 (dryer or a/c unit cable), 12/2’s, etc) go thru ONE 3” hole on the backside of the main panel. I thought 10gauge and smaller were to be in their own knockout holes. I didnt even see any silicone or foam. I looked on the front side of the panel and there actually is no space for another knockout hole.

-- The Carpenter Bee is derived from the Ancient Greek word wood-cutter "xylokopos/ξυλοκὀπος"

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