Solid Indoor 12/2 NMB Cable 100ft Coil - Durable 12 Gauge Wire

In this review of the Solid Indoor 12/2 NMB Cable 100ft coil, the bottom line is clear: this is a practical, no-nonsense run of 12 gauge building wire aimed at homeowners, electricians and DIYers who need reliable branch-circuit cable for switches and outlets. The single biggest reason to buy is its straightforward construction and installation-friendly jacket, which makes pulling and stripping easier than many unfinished house-brand spools. For indoor use in wall cavities and attics where NM-B is permitted, it delivers the expected performance and voltage rating without fuss.

Key Features

• Solid 12 gauge conductors: The two solid insulated conductors provide reliable continuity and a stable connection for typical residential branch circuits.
• 100 ft coil length: A convenient coil size that covers most short to medium runs without splicing, reducing installation time on single-room projects.
• Yellow jacket: The bright jacket improves visibility in attics and walls and is durable for pulling through cavities and around framing.
• 600 volt rating: Rated for 600 V, making it suitable for standard residential electrical branch circuits under the NM-B designation.
• Ground conductor included: A 12 gauge solid ground wire runs parallel with the insulated conductors, meeting typical grounding needs without extra parts.
• Coated for easier handling: The cable jacket and conductor coating make stripping and installation more straightforward for experienced installers and competent DIYers alike.

Who It's For

This cable is well suited for homeowners doing moderate electrical work, mobile electricians handling routine outlet and switch installs, and contractors who need an economical coil for short runs inside wall cavities and attics. Its solid 12 gauge construction is ideal for branch-circuit use where a durable, long-lasting conductor is preferred.

It is not appropriate for outdoor use, wet or damp locations, or applications that require flexible stranded wire. If you need cable rated for direct burial, constant moisture, or commercial flexible conduits, look for a product designed for those environments instead.

Pros & Cons

Pros

• Good wire quality and durability for residential branch circuits.
• Yellow jacket and coated conductors make pulling and stripping easier.
• Includes a solid 12 gauge ground, simplifying installation and compliance.
• 100 ft coil gives a practical length for many jobs without excess waste.

Cons

• Solid conductors are stiffer and harder to bend than stranded options, which can make tight runs more challenging.

Specifications

Type	NM-B (non-metallic 90 C)
Conductor	Solid copper, 2 conductors + ground
Gauge	12 AWG
Length	100 ft coil
Voltage rating	600 volts
Jacket color	Yellow

Our Verdict

The Solid Indoor 12/2 NMB 100 ft coil is a sensible, value-oriented choice for residential branch-circuit wiring. It combines solid 12 gauge conductors, a full ground, and a pull-friendly jacket that saves time on typical outlet and switch installs. Buy this if you need dependable indoor NM-B cable for dry locations; choose a stranded or moisture-rated alternative if you require flexibility or outdoor use.

Frequently Asked Questions

Can this cable be used outdoors?
No. This NM-B cable is intended for indoor use in dry locations such as wall cavities and attics and is not rated for outdoor or damp conditions.

Is the ground conductor included?
Yes. A 12 gauge solid ground conductor runs parallel to the insulated conductors inside the jacket.

Will the solid wire be hard to work with?
The solid 12 gauge conductors are stiffer than stranded wire, so tight bends can be more difficult, but the jacket and conductor coating help with pulling and stripping.