300 MCM 4C w/ Ground Twisted XHHW-2 Aluminum Feeder Cable, Priority-Plex®, (Brown, Orange, Yellow, Gray, Green)

This 300 MCM 4-conductor Priority-Plex® assembly with an integrated #1 AWG Ground is a precision-engineered feeder solution for 277/480V 3-phase, 4-wire systems. By factory-twisting the phase conductors (Brown, Orange, Yellow), the neutral (Gray), and a #1 AWG Green ground, this system provides a complete circuit in a single bundle, maximizing efficiency and code compliance for industrial and commercial installations.

Why Choose Priority-Plex® 300 MCM with #1 Ground?

The #1 AWG ground is specifically sized to meet NEC Table 250.122 requirements for the overcurrent protection typically associated with 300 MCM aluminum. Priority-Plex® technology ensures that all five conductors pull as a single, synchronized unit, which is critical for maintaining consistent tension and preventing the ground wire from "spiraling" or getting caught during complex conduit runs.

• Optimized Grounding: The #1 AWG Green ground is factory-integrated, providing a robust, low-impedance path for ground-fault currents while maintaining a compact bundle geometry.

• Streamlined Site Logistics: One reel replaces five. This significantly reduces the job site footprint and setup time, especially in tight electrical rooms or on elevated cable trays.

• 480V Phase Identification: Factory-colored insulation (Brown, Orange, Yellow, Gray) provides permanent phase identification. This removes the labor-intensive task of field-taping and prevents costly phase-rotation errors.

• Rugged XHHW-2 Insulation: The XLPE (Cross-linked Polyethylene) jacket is tougher than standard PVC, offering high resistance to the physical stresses of industrial pulls and a 90°C rating in both wet and dry locations.

Technical Specifications: 300 MCM 4C + #1G

• Phase/Neutral Size: 300 MCM (kcmil)

• Ground Size: #1 AWG

• Number of Conductors: 5 (Brown, Orange, Yellow, Gray, Green Ground)

• Conductor Material: AA-8000 Series Aluminum Alloy

• Insulation Type: XHHW-2 (Cross-linked Polyethylene)

• Voltage Rating: 600V

• Temperature Rating: 90°C (Wet/Dry)

• Ampacity: 255 Amps (@ 90°C) | 230 Amps (@ 75°C)

• Configuration: Parallel-Twisted (Priority-Plex®)

Common Applications

• Industrial Sub-Feeders: Supplying power from main switchgear to secondary 480V distribution panels and high-torque motor loads.

• Commercial 480V Services: Ideal for high-rise utility risers and primary service entrances for hospitals and large retail complexes.

• Mechanical Systems: Providing the primary feed for large-scale commercial HVAC chillers and industrial air handling units.

• Educational & Healthcare Facilities: Reliable power distribution for laboratory wings, university infrastructure, and critical medical imaging suites.

Technical Note: When terminating 300 MCM aluminum, ensure you use AL9CU-rated mechanical or compression connectors. It is vital to wire-brush the conductor and apply an approved antioxidant joint compound to ensure long-term connection integrity. Always verify that your conduit sizing accommodates the 5-conductor twisted bundle diameter per NEC Chapter 9 requirements.

CABLE CONFIGURATION: 4C + 1G (BRN-ORG-YEL-GRY-GRN) Twisted Bundle

PRIORITY PART#: 300-04PPLEX-BOYG-1G

General Shipping Information

In-stock orders placed before 3pm EST typically ship within 1-2 business days. Our business days are Monday through Friday; we do not process orders on Saturday, Sunday, or major US Holidays.

You will receive an e-mail with a tracking number within 1-2 business days from the time its shipped. You will also be able to view your order status and tracking numbers in your account order history.

Expedited Shipping

Expedited shipments are delivered Monday-Friday except on US Holidays. The order must be placed before 12pm CST to ship same day ( Mon-Fri Only).

Returns

You have 30 days from the day you receive the item to contact us for a return. Returns are subject to a 30% Restocking Fee.

Please contact us at help@wireamerica.com to request a return authorization. Have your order number or name the order was placed with ready and we will email you an RMA (return) number and instructions for return. Currently, we do not offer exchanges. A new order must be placed if you need a different item. If you provide the new order number at the time of your return request, the restocking fee may be lowered.

Orders on any items with a material value of $50 or less are non-returnable.