12-3 NM-B WIRE 250' COIL

12-3 NM-B WIRE 250' COIL – Product Description

🔌 What it is

A 250-foot coil of 12/3 NM-B (Romex-style) copper building wire used for 120V/240V residential circuits requiring an extra conductor.

🧾 What the shorthand means

• 12-3 → wire configuration:
  • 12 AWG copper conductors
  • 3 insulated conductors + ground
  • (black, red, white + bare copper ground)
• NM-B → Non-Metallic Building cable (indoor PVC-sheathed wiring)
• WIRE → electrical cable
• 250' COIL → 250-foot spool

⚡ What it’s used for

12/3 NM-B is used for 20-amp circuits that need an extra conductor, such as:

• Three-way and four-way lighting circuits
• Ceiling fans with separate light/fan control
• Split receptacle circuits
• Multi-wire branch circuits (where permitted)
• Some 240V circuits requiring a neutral

🔥 Electrical characteristics

• Typically used on 20-amp breakers
• Rated for indoor dry locations only
• Copper conductors with PVC insulation and outer jacket

🧠 Simple explanation

This is a 250-foot roll of 20-amp household wire used when you need an extra wire for switch control or mixed circuit functions.

🔧 Key takeaway

• 12/3 = two hots + neutral + ground
• Used for switching systems and some mixed-voltage circuits
• Heavier-duty than 14 AWG wiring (supports 20A circuits)