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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.

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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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Complete Guide to Home Electrical Wiring

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Includes:
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.





Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

Electrical Tips to Help You Wire it Right

The Safest Way to Test Electrical Devices and Identify Electric Wires!

The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester that I use to easily Detect Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.

The Quickest Way to Check for Faulty Electrical Wiring!

The Plug-In Outlet Tester
This is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring.
It detects probable improper wiring conditions in standard 110-125 VAC outlets Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency Lights indicate if wiring is correct and indicator light chart is included Tests standard 3-wire outlets UL Listed Light indicates if wiring is incorrect Very handy and easy to use.

Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!

The Wire Stripper and Wire Cutter
My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
This handy tool has multiple uses:
The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation.
The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets..

The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use.

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