Southwire 63947655 Nm-b 12 Awg 20A 600V Stranded Wire 250ft

Product Description

The SOUTHWIRE 63947655 is a 12 AWG NM-B stranded copper building wire rated for 20 amps and 600 volts. It features a PVC insulation layer and a nylon jacket that provides moisture resistance and tear resistance, making it suitable for residential and light commercial wiring applications. This 250-foot spool carries a purple jacket for easy identification. The wire meets Federal Specification A-A-59544, UL 719, and UL 83, confirming it is UL Listed for code-compliant installations. Licensed electricians and electrical contractors are the primary installers of this product.

This NM-B wire is used in dry or damp interior locations within residential structures, including branch circuit wiring for outlets, lighting, and appliances. The 12 AWG gauge is standard for 20-amp branch circuits commonly found in kitchens, bathrooms, laundry rooms, and garage circuits. The stranded core construction offers flexibility during routing through framing and conduit pathways. The 250-foot length is well suited for new construction or whole-home rewiring projects where longer continuous runs reduce splice points.

Key Features

• 12 AWG stranded copper conductor rated for 20 amps at 600 volts
• NM-B type classification suitable for interior branch circuit wiring
• PVC insulation with nylon jacket for moisture and tear resistance
• Purple jacket color for quick visual identification on the job
• Meets Federal Specification A-A-59544, UL 719, and UL 83 standards
• 250-foot spool length reduces splices on longer branch circuit runs

Compatibility

Designed as a standard NM-B replacement or new-installation wire for 20-amp residential branch circuits in dry or damp interior locations where NM-B type cable is permitted by local electrical code.

Installation Notes

Installation must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and all applicable local codes. Always de-energize the circuit at the panel and verify with a non-contact voltage tester before making any connections. NM-B cable must be protected from physical damage where exposed and shall not be used in wet locations, concrete encasement, or conduit where not permitted by code. Secure and support the cable at intervals required by the NEC.