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Evergreen Park (Chicago), IL
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Gaston, Oregon
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 Thermal Magnetic Breaker Settings
[#2] Posted: 04/02/2012 - 09:19:21 AM |  |  |
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Perhaps an adjustable time delay?
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Jim Katen, Oregon
www.amipdx.com |
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Lafayette, Louisiana
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Thermal Magnetic Breaker Settings
[#3] Posted: 04/02/2012 - 4:13:24 PM | | |
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I think the adjustment on the left is there for the factory to set the magnetic trip I(m), characteristics of the breaker to whatever it's supposed to be for that particular panel. This particular adjustment seems capable of reaching values of anything between 5 and 10 times the value of the thermal trip, I(n). I don't think it's there for the homeowner or even the electrician to play with. If you look at the label, it might tell you just what value of I(m) the adjustment is supposed to be set at.
I don't know what the adjustment on the right side is for. A better view might help.
Marc
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"If Guam gets too overpopulated, it might tip over."
Congressman Hank Johnson (D) GA |
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Allen, Texas
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Thermal Magnetic Breaker Settings
[#4] Posted: 04/02/2012 - 4:15:13 PM | | |
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I've never seen it but then at 400 amps, that in itself would be a rareity.
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Jim Luttrall
Mr. Inspector.net, Inc.
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Thermal Magnetic Breaker Settings
[#5] Posted: 04/03/2012 - 4:12:35 PM | | |
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They are breakers manufactured for industrial equipment. The dials are to make adjustments to the breakers to match the characteristics of industrial motors. In other words, to minimize nuisance tripping on motor start-up.
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| Bill Kibbel, Historic & Commercial Building Inspections - Old House Resources |
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Evergreen Park (Chicago), IL
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Thermal Magnetic Breaker Settings
[#6] Posted: 04/03/2012 - 10:55:23 PM | | |
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This is in a house with nothing electrically special going on.
100 amp main panel would be just fine.
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Mike Lamb
http://www.inspection2020.com/ |
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