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In my service panel I would like to upgrade two standard circuit breakers with AFCI breakers.

AFCI circuit breakers differ from standard circuit breakers in that you attach the hot an neutral to the breaker, and then attach the AFCI's coiled white wire to the neutral bus bar. With a standard circuit breaker, the hot wire is attached to the breaker, and the white wire is attached to the neutral bus bar. Here is a diagram of an AFCI breaker:

Image of AFCI breaker

I shut down the power to the panel, remove the cover and now I need to find the neutral (white wire) associated with each circuit. I see a dozen white wires.

I know which wires are the hot wires for each circuit, but how can I determine which whiteneutral wire is paired with a particular hot wirepart of that same circuit?

BasedI can make some guesses based on the path of the hot wire, and the style and markings on the insulation of the wires, I believe I have narrowed down the appropriate neutrals down to two out of five wires. But I need to know for sure.

Service Panel image

And for the record, all of these circuits were installed by licensed electricians. And yes, they used blue wire on some circuits, which is a bit unusual but not unheard of.

In my service panel I would like to upgrade two standard circuit breakers with AFCI breakers.

AFCI circuit breakers differ from standard circuit breakers in that you attach the hot an neutral to the breaker, and then attach the AFCI's coiled white wire to the neutral bus bar. With a standard circuit breaker, the hot wire is attached to the breaker, and the white wire is attached to the neutral bus bar. Here is a diagram of an AFCI breaker:

Image of AFCI breaker

I shut down the power to the panel, remove the cover and now I need to find the neutral (white wire) associated with each circuit. I know which wires are the hot wires, but how can I determine which white wire is paired with a particular hot wire?

Based on the path of the hot wire, and the style and markings on the insulation of the wires, I believe I have narrowed down the appropriate neutrals down to two out of five wires. But I need to know for sure.

Service Panel image

And for the record, all of these circuits were installed by licensed electricians. And yes, they used blue wire on some circuits, which is a bit unusual but not unheard of.

In my service panel I would like to upgrade two standard circuit breakers with AFCI breakers.

AFCI circuit breakers differ from standard circuit breakers in that you attach the hot an neutral to the breaker, and then attach the AFCI's coiled white wire to the neutral bus bar. With a standard circuit breaker, the hot wire is attached to the breaker, and the white wire is attached to the neutral bus bar. Here is a diagram of an AFCI breaker:

Image of AFCI breaker

I shut down the power to the panel, remove the cover and now I need to find the neutral (white wire) associated with each circuit. I see a dozen white wires.

I know which wires are the hot wires for each circuit, but how can I determine which neutral wire is part of that same circuit? I can make some guesses based on the style and markings on the insulation.

Service Panel image

And for the record, all of these circuits were installed by licensed electricians. And yes, they used blue wire on some circuits, which is a bit unusual but not unheard of.

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When replacing a circuit breaker in the service panel, how can I determine which neutral is associated with the hot wire?

In my service panel I would like to upgrade two standard circuit breakers with AFCI breakers.

AFCI circuit breakers differ from standard circuit breakers in that you attach the hot an neutral to the breaker, and then attach the AFCI's coiled white wire to the neutral bus bar. With a standard circuit breaker, the hot wire is attached to the breaker, and the white wire is attached to the neutral bus bar. Here is a diagram of an AFCI breaker:

Image of AFCI breaker

I shut down the power to the panel, remove the cover and now I need to find the neutral (white wire) associated with each circuit. I know which wires are the hot wires, but how can I determine which white wire is paired with a particular hot wire?

Based on the path of the hot wire, and the style and markings on the insulation of the wires, I believe I have narrowed down the appropriate neutrals down to two out of five wires. But I need to know for sure.

Service Panel image

And for the record, all of these circuits were installed by licensed electricians. And yes, they used blue wire on some circuits, which is a bit unusual but not unheard of.