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Can a 125Amp Circuit Breaker be used for 250Amps?

If a 2pole circuit breaker is rated for 125 amps can it be used for 250 amps? The Amperage Rating of a 2Pole 125Amp Circuit Breaker.


2Pole 125 Amp Circuit Breaker

Electrical Question: If a 2pole circuit breaker is rated for 125 amps can it be used for a total of 250 amps?

This electrical wiring question came from Carl, in Castle Rock, Colorado.

Dave’s Reply:
Thanks for your electrical wiring question Carl.

The Amperage Rating of a 125 Amp Circuit Breaker

2-pole-circuit-breaker

Application: Installing a Circuit Breaker in a Main Electric Service Panel.
Skill Level: Advanced – Should be Installed by a Licensed Electrical Contractor. This is Not Recommended for Homeowners or DIY individuals.
Tools Required: Electricians pouch of hand tools and the various power tools necessary for the specific method of electrical service installation.
Estimated Time: Depends on the type of panel, the location, and available access to the project area.
Precaution: Shock Hazard and Arc Flash Hazard! This is an extensive project which should be done by a licensed electrical contractor. The main source of electric utility power should be turned off before working in an electric panel.
Notice: Installing an Electrical Service Panel should be done according to local and national electrical codes with a permit and be inspected.

The Amperage Rating of a 2Pole 125Amp Circuit Breaker

NOTE: The two power conductors of a 2pole 240Volt electrical service are out of phase from each other when the power is produced at the generating station or the power source unit.

Note: Electrical circuits are carefully calculated and designed for the specific application or equipment which will be connected to the circuit.

The Amperage Rating of an Electrical Panel

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