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50-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

Southwire 50-ft 12 / 3 / Romex SIMpull Solid Indoor CU NM-B W/G Individual pack ( By-the-roll )

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Could I use this to install an 4 wire plug for my 5th wheel RV 50 AMP CAMPER


Hello, thank you for your question. This answer will require a more technical response. Please reach out to our technical team at cabletechsupport@southiwre.com for a detailed explanation of your question.

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No! 12-3 NM-B cable must be protected at no more than 20 amps. You would need to use 6-3 NM-B cable IF the installation is in a dry indoor location. If the installation is outdoors you would need to use UF-B cable.

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