Underground electrical cable · 10/3 NMWU Direct Burial 150m Reel

What this product is for

This 10/3 NMWU copper cable is used for underground electrical distribution where direct burial cable is required. It is intended for Canadian residential and light commercial work in wet or dry locations exposed to weather, including underground runs to detached buildings, outdoor equipment, and similar branch circuit applications.

Use for

Use for direct burial underground runs, outdoor branch circuits, and feeder or branch wiring where 10 AWG 3-conductor copper NMWU cable is specified. Typical applications include detached garages, sheds, outdoor equipment feeds, and other installations requiring a black 150 m (492 ft) coil of 300 V underground cable.

Avoid for

Avoid using this cable where a different conductor count, voltage rating, or insulation type is required, or where local code calls for conduit, mechanical protection, or another wiring method. Do not assume suitability for every service or feeder application without confirming code requirements and load calculations.

Best for

Best for electricians and contractors who need a full 150 m reel length of 10 AWG 3-conductor copper underground cable for direct burial work. It suits projects where outdoor exposure, wet conditions, and underground routing are part of the installation.

Installed in

Installed in underground trenches, below grade runs to accessory buildings, outdoor circuits, and other weather-exposed locations. This cable is commonly selected for Canadian construction and renovation work where NMWU underground cable is accepted by code.

Why this product exists

NMWU cable provides a practical wiring method for underground and wet-location installations without requiring the same approach as indoor NMD90 cable. The 10 AWG size is commonly used where higher branch circuit capacity is needed than #12 or #14 AWG wiring. As a rule of thumb, 10 AWG copper is commonly associated with 30 A circuits, but final conductor sizing must follow the Canadian Electrical Code and equipment ratings.

Compared with similar products

Compared with NMD90 Loomex cable, this NMWU cable is intended for underground and weather-exposed use. Compared with 12/2 or 12/3 underground cable, 10/3 provides a heavier copper conductor size and an extra insulated conductor for applications that need more circuit flexibility. If conduit wiring is planned instead, individual conductors in conduit may be preferred depending on the installation method.

Specifications

• Cable type: NMWU underground direct burial cable
• Conductor size: 10 AWG
• Number of conductors: 3 conductors
• Conductor material: Copper
• Bonding wire: Includes ground/bonding conductor as listed by distributor sources
• Voltage rating: 300 V
• Temperature rating: 60 deg C (140 deg F) as listed by distributor sources
• Jacket colour: Black
• Length: 150 m (492 ft)
• Installation environment: Direct burial, wet locations, dry locations, weather-exposed locations
• Typical guidance: Often selected for approximately 30 A copper branch circuits; actual performance depends on installation conditions, insulation, layout, termination temperature limits, and local electrical code.