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#68418 - 08/08/06 07:26 AM Breaker: 250V or 125V?
Christopher.Banbury Offline
Junior Member

Registered: 08/07/06
Posts: 6
Loc: Brooksville, FL, USA
I purchased a refurbished battery backup that uses 125V/30A single phase power from a L5-30R receptacle. The on-board breaker is replaceable on the rear and is listed at 250V/30A. The reported trip amperage is 37.5A. Will this breaker throw at 4687W (125V) or not until 9375W (250V)?
_________________________
Christopher Banbury, PE
President
Ark Engineering, Inc.
PO Box 10129, Brooksville, FL 34603
22 N. Broad ST, Brooksville, FL 34601
Phone: (352) 754-2424
FAX: (352) 754-2412
http://www.arkengineering.net

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#68419 - 08/08/06 10:08 AM Re: Breaker: 250V or 125V?
resqcapt19 Offline
Member

Registered: 11/10/00
Posts: 2209
Loc: IL
The breaker doesn't care about the load watts. In its themal mode (overload) it only cares about the watts caused by the current flowing through its thermal element. These watts are based on the impedance of the thermal element and the current (amps).
Don
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