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Old 07-20-2009, 03:40 PM   #1
RST
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Please look at my electrical plan for a subpanel.


Today I wrote a plan for installing a subpanel and filled out a permit application. I was double-checking everything before I went downtown, when I noticed something about licensed contractors... long story short, I call the Codes office, and I can't pull a permit, I have to be licensed contractor to do ANY electrical work on my house! (A license entails a $150 fee, 5 years of experience, passing a test, ...). I am trying to do the right thing here, so the next owner of my home doesn't get the electrical mess I have, and the city says no way!!! After I went to the trouble of reading a half dozen books and educating myself extensively...

Since I typed up this detailed plan for the inspector, can you guys look it over and tell me if it sounds acceptable?

Thanks for the help, and thanks for reading my rant.

Robert

P.S. At least I didn't call the city from my home phone, it was from my office phone which just shows the number of HQ, not my extension.
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Old 07-20-2009, 04:05 PM   #2
R_T
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Please look at my electrical plan for a subpanel.


Two things

If you can replace the 100a breaker in panel B with lugs or a 60a breaker, that would be good. The panel should already have lugs in it. The breaker (unless the garage is a seperate building) is redundent.

you wrote:a. Subpanel B will be mounted in an existing 2x4 stud bay with the disconnect at a height TBD, but no more than 67 above the floor.
b. A separate grounding bus will be installed (currently there is only a combined bus for the neutral and ground wires; it is isolated from the panel).

The nuetral buss in subpanel B needs to be floated (no connection to ground). Without seeing your panel it is hard to tell you how. The ground buss must be connected to the panel enclosure.

If the garage is detached, everything changes.

Good luck and may I suggest you have a good electrician check your work cause luck ain't a good thing to rely on.

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Old 07-20-2009, 04:12 PM   #3
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Please look at my electrical plan for a subpanel.


The attachment is too difficult to read on my computer but, I say........

Fight the power!
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Old 07-20-2009, 04:34 PM   #4
RST
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Please look at my electrical plan for a subpanel.


R_T,

Thanks for the feedback. The subpanel has a combined ground/neutral bus which is isolated from the panel case. There doesn't seem to be any way to split them up, so I was going to buy a separate ground bar and attach that directly to the case. That's the correct way, right?

RST
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Old 07-20-2009, 05:19 PM   #5
R_T
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Please look at my electrical plan for a subpanel.


Make 100% certain that there is no continuity between the busses and the enclosure. If so, installing a new ground buss should be fine. You must then seperate the grounds and nuetrals when landing them.
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