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

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  #1  
Old 12/25/18, 11:33 AM
John Kulnis John Kulnis is offline
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Default Cutler Hammer

Looking at this panel, #8 calls it out as HOUSE which is a 50 amp breaker. No other disconnects from this panel to the meter. House built in 1959. Should I rely on the label and assume it is the main disconnect? It is undersized too. Call it out as undersized, should be a minimum of 100 amps? Thoughts please, thanks
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  #2  
Old 12/25/18, 11:43 AM
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Robert Meier Robert Meier is online now
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Default Re: Cutler Hammer

That looks like a split bus panel where there is no single main CB. You can have up to 6 CB's as service disconnects. The 50 amp is back fed from the lugs on the top and is one of the 6 service disconnects. It is not required to be 100 amps or more.

Whether or not it's too small would be determined by a load calculation. Given that panel's age I would say that unless the 50 amp CB was tripping often it's been used that way for a long time and it's probably fine. There are two double taps on the main lugs that are a violation.

Last edited by Robert Meier; 12/25/18 at 11:46 AM..
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  #3  
Old 12/25/18, 12:15 PM
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Bradley K. Toye, CMI Bradley K. Toye, CMI is online now
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Default Re: Cutler Hammer

Yep...split bus.



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  #4  
Old 12/25/18, 3:01 PM
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Larry Kage, CMI Larry Kage, CMI is offline
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Default Re: Cutler Hammer

Agree...




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