Electrical Circuit Capacity
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By Dave Rongey
Summary: A shop is set up in a storage unit and they have tapped their electrical into one of two 20A GFI circuit breakers starting from a sub panel at the building. |
Electrical Question about the capacity of a Shared Circuit |
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| Question From Michael P- I have a woodworking shop set up in a storage unit and have tapped my electrical into one of two 20A GFI circuit breakers stemming from a sub panel on my building. Upon investigation of the electrical set up, I have looked into the sub panels of my building and the two previous(Out of 7 buildings between myself and the main breaker panel) and found that each building has a panel that has a breaker linking it to the next in line. Two buildings before mine feeds 2-20A circuits, one GFI for the receptacles and one for the 70W HPS lighting circuit, and one 50 A breaker that feeds the building just before me. The building just before me has the same 2 20A circuits as the previous and then has a 40A breaker that feeds the panel on my building. |
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My building has instead of 2 20 circuits, 4 20A circuits, two
of which are GFI protected. And all of this is being fed from a 40A breaker
in the previous sub panel? I don't have a complete electrical
understanding, but his couldn't be right could it? We are having trouble with
having enough power on our circuits in the building sometimes depending if
someone is using electricity further down in the facility. Is there any fix
by increasing the size of the breakers down the line? |
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Thank you for your response, that was what I had kind of figured but didn't
want to hear due to the inconvenience. They have several 70w HPS High Pressure Sodium ballasts
that have been burned out and not replaced for a long time now, so I am sure
they WILL NOT spend any money money on an upgrade. So the 40A on the
previous panel feeding the 4-20A circuits on mine is not a problem? |
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