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Electrical Inspections Contains discussions about electrical systems. This includes receptacles, panels, wiring, etc.

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  #1  
Old 10/18/09, 10:23 PM
Robert L. Bassett Robert L. Bassett is offline
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Default Main Panel vs Sub-Panel and main disconnect?

I am filling out an inspection report on a 1979 condo. The main disconnect is at the meter in a central utility room which also contains the meters and disconnects for the other 8 condos in the building. The meter room is 100 feet from the subject condo. Is the panel inside the condo considered the main panel or a sub-panel? There is no main disconnect in the condo's panel so it would take more than 6 hand motions to turn off the power from inside the condo. Can the remote disconnect in the utility room satisfy the less than 6 hand motions rule to disconnect the power for the condo?

Also there are 2 double taps in the panel which I plan to write-up, however I'm not sure if I should write-up the drywall finish overspray which could also be on the non-visible busbar under the breakers and cause heatup due to a poor contact. I just say an educational video which said this could be a problem, though it's probably been that way since 1979 and not caused a problem yet. What do you think? Note: Panel photo attached.
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  #2  
Old 10/18/09, 10:36 PM
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Default Re: Main Panel vs Sub-Panel and main disconnect?

I state where the main disconnect breaker/panel is located and I refer to the other one as the main distribution panel.
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Old 10/18/09, 11:48 PM
Frank P. Newman Frank P. Newman is offline
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Default Re: Main Panel vs Sub-Panel and main disconnect?

Normally, the panel containing the disconnect (even if that is the only breaker) is the considered to be the main panel and any downstream are sub-panels (some call them remote distribution panels), subject to the rules governing them.



Frank P. Newman
Emerald City Inspections, LLC
Dublin, GA

Last edited by fnewman; 10/18/09 at 11:55 PM..
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  #4  
Old 10/18/09, 11:57 PM
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Jeffrey R. Wicklander Jeffrey R. Wicklander is online now
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Default Re: Main Panel vs Sub-Panel and main disconnect?

http://www.nachi.org/forum/f13/no-ma...connect-40939/

More discussion on past thread.

Jeff



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  #5  
Old 10/19/09, 1:15 PM
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Jeffrey R. Pope Jeffrey R. Pope is offline
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Default Re: Main Panel vs Sub-Panel and main disconnect?

If we lose the word "main," it becomes much less confusing.

There is "service" equipment, and there is "other" equipment. The service equipment contains the service disconnect, which also disconnects power from other equipment. A service disconnect (six or less throws) is required only at the service equipment. Other equipment does not fall under the "six throw rule" (exceptions do apply).



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Last edited by jpope; 10/19/09 at 1:20 PM..
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  #6  
Old 10/19/09, 4:17 PM
wh349055 wh349055 is offline
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Default Re: Main Panel vs Sub-Panel and main disconnect?

There also appear to be some low voltage wires (those orange wire nuts) at the top of the panel. Thats a violation worth mentioning
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  #7  
Old 10/20/09, 4:55 PM
Tim Larsen Tim Larsen is offline
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Default Re: Main Panel vs Sub-Panel and main disconnect?

I don't see any ground conductors...?

Tim
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  #8  
Old 10/20/09, 5:20 PM
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Richard Mangold Richard Mangold is offline
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Default Re: Main Panel vs Sub-Panel and main disconnect?

Tim,
If metal conduit is used, the metal conduit serves as the ground conductors. This is common in the Chicago area



Rich Mangold
RCM Home Inspections, LLC
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  #9  
Old 10/20/09, 6:33 PM
Tim Larsen Tim Larsen is offline
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Default Re: Main Panel vs Sub-Panel and main disconnect?

Thanks Richard. I thought of that, but couldn't see how the conduits/panel were bonded.

Tim
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  #10  
Old 10/20/09, 6:35 PM
Tim Larsen Tim Larsen is offline
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Default Re: Main Panel vs Sub-Panel and main disconnect?

Scratch that - bonded at meter. I'm a little slow today...

Tim
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  #11  
Old 10/20/09, 10:54 PM
Robert L. Bassett Robert L. Bassett is offline
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Default Re: Main Panel vs Sub-Panel and main disconnect?

Thanks to all for your comments. They have been very useful!
Bob Bassett
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  #12  
Old 10/24/09, 7:16 PM
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Patrick Bolliger Patrick Bolliger is offline
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Default Re: Main Panel vs Sub-Panel and main disconnect?

Check the breaker brands, They may not be the allowable ones for that panel brand
I see some "color" wire on the neutral buss... too

Just my .05 cents..
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