Best 6/3 Tray Cable With Ground for Power Distribution
Choosing the right 6/3 cable with ground is essential for safe, compliant indoor and tray applications. This guide covers top options that pair reliability with practical features for residential and light commercial wiring. We highlight types suitable for dry locations, indoor runs, and environments where a tray cable or NM-B alternative is appropriate. Each product below includes key specifications to help compare suitability for circuits requiring two hots, a neutral, and a ground conductor, such as 120/240V loads, subpanels, and designated branch circuits.
| Product | Brand | Length | Key Features |
|---|---|---|---|
| #6-3C THHN-PVC Tray Cable with Ground (150ft) | Generic | 150 ft | THHN/THWN conductors, 3 conductors + ground, PVC jacket, suitable for tray installations |
| NM-B 6/3 Wire with Ground, 35ft | XMK | 35 ft | UL listed NM-B, 6/3 with ground, indoor residential wiring, dry locations |
| Southwire 6/3 NM-B Cable, 125 ft | Southwire | 125 ft | Romex NM-B, 6/3 with ground, dry indoor use, 600V rating |
| 6/3 Wire with Ground – 5FT NM-B | MOOKEERF | 5 ft | Pure copper conductors, dual-layer insulation, nylon jacket, -10°C to 90°C |
| MOOKEERF 6/3 MC Cable with Ground – 25FT | MOOKEERF | 25 ft | Aluminum armor, 6AWG/3 conductors, RoHS, 600V, NEC-compliant |
#6-3C THHN-PVC Tray Cable with Ground (150ft)

This tray cable features three current-carrying conductors plus a ground, housed in a THHN/THWN construction with a PVC jacket. Designed for tray or raceway installations, it provides a flexible option for indoor, dry environments where above-ground wiring must be organized and protected. The 6 AWG conductors support moderate load requirements, suitable for branch circuits or small mechanical systems. The PVC jacket offers resistance to moisture exposure and typical indoor contaminants while maintaining a compact profile for cable trays.
NM-B 6/3 Wire with Ground, 35ft

UL listed NM-B cable uses a durable nonmetallic sheath for indoor residential wiring. This 6/3 with ground configuration includes a 10 AWG ground conductor and is rated for up to 600V, with an operating range suitable for dry indoor locations. It is commonly employed for branch circuits supplying outlets, switches, and fixed loads. While ideal for indoor installations, it is not intended for outdoor or wet locations and is best used within walls, attics, garages, or basements in normally dry conditions.
Southwire 6/3 NM-B Cable, 125 ft

Southwire Romex NM-B cable provides a widely used residential indoor wiring option. The 6/3 NM-B configuration includes a ground conductor and is rated for 600V. It is designed for dry indoor locations and can be installed in walls, attics, or unfinished spaces. This cable is suitable for standard branch circuits and for running to outlets, switches, and lighting loads. Note that NM-B is not recommended for damp or outdoor use.
6/3 Wire with Ground – 5FT NM-B

This compact 5-foot NM-B option uses pure copper conductors and a dual-layer insulation system. The 6/3 with ground configuration supports normal residential loads with two hot wires and a neutral, plus a grounding conductor. The outer nylon jacket provides added abrasion resistance, making it a practical choice for short runs inside walls or closets where space is limited. Suitable for dry indoor locations, this cable is designed for standard lighting, receptacle, and small appliance circuits.
MOOKEERF 6/3 MC Cable with Ground – 25FT

This 6/3 MC cable couples pure copper conductors with a robust metal armor, providing enhanced protection in harsh environments. The interlocked steel armor shields conductors from moisture, abrasion, and physical damage, while a fire-resistant insulation adds safety in high-heat areas. Rated for 600V and compliant with NEC Article 330 for exposed or concealed use, it suits industrial, commercial, and challenging building applications where additional conduit or duct protection is required.
Wirenco 6/3 MC Cable with Ground

Wirenco MC Cable with aluminum armor provides a versatile option for commercial and multi-residential projects. The aluminum jacket offers protection while maintaining flexibility for routing through walls and conduits. It is designed for branch, feeder, and service applications, with a rated amperage appropriate for typical distribution needs in building projects requiring durable, armored conductors.
6/3 UF-B Wire, Underground Feeder

UF-B wire is designed for direct burial and wet locations outdoors, offering resistance to moisture and sunlight while maintaining flexibility for underground feeder installations. The 6/3 configuration includes two hot conductors, a neutral, and a ground, making it suitable for outdoor circuits that require durable, moisture-resistant cabling. This option is best for exterior runs or locations where indoor NM-B wiring is not appropriate.
Buying Guide
Key considerations for selecting 6/3 cable with ground include location, environment, and code compliance. Determine whether the run is indoors, dry, or in a tray, duct, or conduit. NM-B cables are common for dry indoor residential wiring but are not intended for wet locations or direct burial. Tray cables and MC cables offer enhanced protection and can be used in trays, conduits, or exposed spaces, with varying armor and insulation to meet NEC requirements. For outdoor or underground applications, UF-B or armored MC cables provide moisture and impact resistance. Always verify voltage rating (typically 600V for these cables) and temperature ratings to suit heating loads and installation conditions. Consider conductor count, gauge (6 AWG), and whether the ground conductor is included and properly sized for the circuit. When in doubt, consult local electrical codes or a licensed electrician to ensure safe, compliant installations.
Comparative snapshot:
- Tray cables (THHN/THWN, PVC jacket) are suited for organized runs in cable trays and indoor dry locations.
- NM-B cables are common for general indoor residential wiring but are not designed for exposure to moisture or direct outdoor use.
- MC cables provide robust protection with metal armor for harsh environments and flexible routing in commercial settings.
- UF-B cables are optimized for outdoor and direct burial applications with moisture resistance.
- Armor and jacket materials (nylon, aluminum, steel) impact durability, flexibility, and permitted install locations.