336.4 MCM Quadruplex Aluminum Overhead Service Drop Cable (Bronco)

"The industry standard for high-capacity 3-phase overhead utility drops, commercial service entrances, and heavy industrial temporary power distribution requiring 19-strand phase conductors and a full-size steel-reinforced neutral messenger. Engineered for reliable 600V aerial power delivery from pole-mounted utility transformers to building service masts and weatherheads, this 4-conductor quadruplex cable features three 336.4 MCM insulated aluminum phase conductors, weather-resistant XLP insulation, and a matching bare 336.4 MCM 18/1 steel-reinforced ACSR neutral messenger designed to handle maximum structural tension and environmental strain."

Key Features & Benefits: 336.4 MCM Quadruplex Overhead Service Drop Cable

The 336.4 MCM Bronco Quadruplex Cable is built for industrial-capacity 3-phase overhead secondary power distribution requiring a full-size neutral conductor to manage heavy unbalanced loads or utility requirements. Designed to span long overhead distances from pole transformers to building service entrances, it provides a sag-resistant, dependable solution for commercial power drops, outbuildings, and major temporary jobsite distribution.

By combining three 19-strand 1350-H19 series 336.4 MCM aluminum phase conductors with a heavy-duty 336.4 MCM 18/1 ACSR neutral messenger, Bronco quadruplex delivers a 370-amp free-air capacity with 8,580 lbs of breaking strength. The extra-thick 80-mil cross-linked polyethylene (XLP) insulation offers long-lasting resistance against severe UV rays, freezing rain, and harsh environmental exposure.

• 600V 3-Phase Aerial Reliability: Rated for continuous 3-phase aerial service up to 600V phase-to-phase at conductor operating temperatures up to 90°C with XLP insulation.

• Full-Size ACSR Neutral Messenger: Features a matching 336.4 MCM 18/1 steel-reinforced ACSR bare neutral messenger delivering 8,580 lbs of breaking strength to prevent sagging and withstand severe wind and ice loads.

• 80-Mil Weather-Resistant XLP Insulation: Extra-thick black cross-linked polyethylene insulation protects against UV degradation, moisture, and ambient temperature swings in harsh outdoor environments.

• Cut to Length by the Foot: Order only the exact span length needed for your project, eliminating jobsite waste and unused spools.

Technical Specifications: Bronco 336.4 MCM Quadruplex Overhead Cable

• Application: Overhead 3-phase secondary power drops (up to 600V) from utility pole transformers to weatherheads, primary temporary jobsite power, and heavy commercial service entrances.

• Code Word: Bronco.

• Voltage Rating: 600 Volts Maximum (Phase-to-Phase).

• Phase Conductors Size & Stranding: Three (3) 336.4 MCM (19-strand 1350-H19 Series Aluminum).

• Neutral Messenger Size & Stranding: One (1) 336.4 MCM ACSR Full-Size Neutral (18 Aluminum / 1 Steel Strand).

• Messenger Breaking Strength: 8,580 lbs.

• Insulation Material: Black Cross-Linked Polyethylene (XLP).

• Insulation Thickness: 0.080 inches (2.03 mm).

• Nominal Outer Diameter: 1.92 inches.

• Approximate Cable Weight: 1,613 lbs per 1,000 ft.

• Ampacity (90°C XLP Conductor): 370 Amps.

• Ampacity (75°C Poly Conductor): 280 Amps.

• Compliance & Standards: ASTM B-230, ASTM B-231, ASTM B-232, ICEA S-76-474, RUS Accepted.

Common 336.4 MCM Quadruplex Overhead Applications

• Commercial & Industrial 3-Phase Overhead Drops: Aerial power runs from pole-mounted transformers to commercial weatherheads, main switchgear, or large industrial facilities requiring up to 370A service with a full neutral.

• Heavy-Duty Temporary Construction Power: 3-phase overhead power delivery for major temporary utility poles, main site distribution equipment, and heavy machinery power.

• Agricultural & Large Outbuilding Distribution: Aerial power supply to heavy workshops, manufacturing barns, and secondary commercial facilities.

Technical Note: All values are nominal and subject to industry tolerances and manufacturer corrections. Specifications are subject to change without notice. It is the buyer’s responsibility to verify that all materials meet the specific requirements of the project and comply with local electrical codes.

Ampacity Reference: Based on conductor temperature of 90°C for XLP (75°C for Poly), 40°C ambient temperature, 0.9 emissivity, and 2 ft/sec wind in full sun. Reference applicable NEC articles for site-specific installation guidelines.

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.