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6 / 3 / Romex SIMpull Stranded Indoor CU NM-B W/G Individual pack ( By-the-foot )

Southwire 6 / 3 / Romex SIMpull Stranded Indoor CU NM-B W/G Individual pack ( By-the-foot )

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Can this be used indoors with a 240 volts 60 amps breaker?


Great question! Yes—Southwire 6/3 NM‑B can be used indoors on a 240V circuit, but it is only rated for up to 55 amps per code, so it cannot be used on a 60‑amp breaker. Please let us know if you need help in any other way by contacting us at consumersupport@southwire.com.

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This wire requires a 50A breaker, max.. 60A is code violation.

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Yes, it can be used. 6-3 NM-B cable is typically used for an electric range requiring a 120/240 volt circuit. If your load is 240 volt, such as for a 10 KW electric furnace, you could use 6-2 NM-B cable.

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