MV-105 5kV Power Cable — UL 1072 Type, 3-Core Configuration

You rely on medium-voltage cable to feed critical switchgear, motors, and transformers. A single insulation fault doesn’t just trip a breaker. It pulls an entire production line down, triggers unscheduled overtime for your crew, and puts project handover dates at risk—none of which shows up on a datasheet.

The MV-105 5kV 3-core power cable answers that. Built to UL 1072 and cut to your drum length requirements from our wholesale facility, it removes the 6–8 week lead time bottleneck that derails construction schedules. Three cores in one jacket mean fewer pulls, fewer racks, and a simpler bill of materials when you’re routing feeders in tray, conduit, or direct-buried duct banks.

Why This Cable Matches Your Project Requirements

UL 1072 Listed MV-105 Construction

MV-105 designation under UL 1072 covers cable rated for 105°C continuous conductor temperature in wet or dry locations. That temperature headroom allows a higher ampacity per circular mil—our engineering teams use this to trim conductor sizes without downgrading circuit protection margins. For your project, that translates to lighter cable, easier pulling tension management, and a smaller copper bill on the same feeder run.

Stranded Copper Conductor, 3 Conductors in One Jacket

An extruded strand shield, ethylene propylene rubber (EPR) insulation, and a copper tape shield form the core of each phase conductor. Three phase conductors are cabled together with fillers and an overall jacket. The benefit at installation: you pull one cable instead of three individual single-conductor cables. Tray fill clears up. Termination time drops. And your QA team only needs to hi-pot test one assembly.

EPR Insulation with High Partial Discharge Resistance

EPR insulation handles high humidity, temperature swings, and sustained overvoltage events better than cross-linked polyethylene (XLPE) in older installation practices. We see fewer partial discharge failures at splices and terminations—this is what drives warranty claims on poorly selected MV cable. Lower PD means the installed system stays below the 5 pC threshold that ASTM and ICEA testing standards define as acceptable.

Heavy-Duty Jacket: Sunlight-Resistant, Oil-Resistant

The outer chlorinated polyethylene (CPE) jacket is rated for direct sunlight, mineral oil splash, and the abrasion you get pulling through cable trays in heavy industrial environments. If your site has outdoor cable tray runs between buildings or you’re routing through a process area with hydraulic oil exposure, this jacket compound won’t degrade the way generic PVC jackets do within two summer seasons.

Wholesale Drum Quantities with Mill-Test Reports

We ship full drums from stock for distributors, electrical contractors, and OEM panel builders. Every drum ships with a certified mill test report showing conductor resistance, insulation thickness, and partial discharge test results against ICEA S-93-639. No guesswork when your client’s commissioning engineer asks for documentation.

Technical Specifications

Where MV-105 3-Core Cable Gets Installed

• Water and wastewater treatment plants. Feeder circuits between medium-voltage switchgear and pump motors. EPR insulation handles the humidity and intermittent condensation inside buried duct banks without requiring nitrogen-gas pressurization.
• Mining and aggregate processing. Tray cable routing from substation to crusher motors and conveyor drives. Abrasion-resistant CPE jacket stands up to dust, vibration, and routine contact with steel tray edges.
• Heavy commercial and institutional campuses. University central plants, hospital power houses, and data center medium-voltage distribution. Three-core cable reduces tray congestion compared to single-conductor alternatives, which matters when you’re squeezing feeder routes through existing utility corridors.
• Oil and gas (non-hazardous areas). Motor feeder circuits for pumps and compressors in exposed outdoor locations. Oil-resistant jacket formula prevents jacket swelling and cracking around lubrication bays and compressor skids.
• Wind farm collector circuits (non-direct-buried applications). Above-ground tray or conduit feeder applications where a single 3-core cable cuts the number of terminations at the tower base by two-thirds relative to three single-conductor runs.

Compliance and Testing Documentation

What we submit with every shipment matters as much as the cable itself. Full compliance package includes:

• ✅ UL 1072 Listed – MV-105 type, 5kV class
• ✅ ICEA S-93-639 / NEMA WC 74 – Test procedures and electrical requirements
• ✅ UL 1685 – Flame test (vertical tray)
• ✅ IEEE 1202 – Flame test (vertical cable tray, 70,000 BTU)
• ✅ EPA 40 CFR Part 261 – Materials classification
• ✅ RoHS compliant – No restricted heavy metals in conductor, insulation, or jacket compounds
• ✅ Factory mill test report – Conductor DC resistance, insulation resistance, partial discharge ≤ 5 pC at 4x U₀, and AC hi-pot per ICEA

If your project specification references additional standards (IEC 60502-2 equivalent, customer-specific documentation packages), we handle that before the drums leave our distribution center.

Frequently Asked Questions

Q: We need 5kV cable for a 4,160V motor feeder. Is MV-105 rated for this voltage class?

MV-105 cable rated 5,000V is designed for systems with phase-to-phase voltage up to 5,000V, including 2,400V and 4,160V three-phase systems. The 105°C continuous temperature rating gives you margin on a 4,160V motor circuit where starting current may push conductor temperature temporarily above the 90°C limit of lower-rated cables. Your ampacity table selection should reference the 105°C column per NEC Article 310, but terminations must be rated for the same temperature unless derating rules apply.

Q: What’s the advantage of specifying 3-core instead of three single-conductor cables?

Three single-conductor cables require individual pulling, individual tray securing, and three termination assemblies per phase. A 3-core MV-105 assembly is one pull, one cable support system, and one overall jacket for managing shield grounding at a single point. The trade-off: single-conductor cables give you greater flexibility to phase-separate for heat dissipation. If your duct bank has adequate spacing and your ampacity requirements are moderate, 3-core saves installation labor and reduces your cable tray weight loading by consolidating three cables into one protected assembly.

Q: Can you supply custom jacket markings, sequential foot markings, or phase-color-coded conductors without a MOQ penalty?

We run sequential foot markings on all standard drum lengths at no additional cost. Phase color coding (#1-black, #2-red, #3-blue is standard; other codes available) and surface-printed company name or project identifier can be tooled for orders above 2,000 feet total across all drum lengths. Short-run custom stenciling for smaller project quantities will carry a modest setup charge. We’ll confirm before cutting.

Q: What’s the typical lead time on 250 kcmil or 500 kcmil 3-core MV-105?

We keep 250 kcmil, 350 kcmil, and 500 kcmil in stock at wholesale distribution. Standard orders ship within 5 business days. For conductor sizes outside our current rotation (600 kcmil and 750 kcmil), expect 3–4 weeks depending on the mill schedule for our US-based production partners. Rush service is available if you’re dealing with a downed critical feeder—mention it when you submit the RFQ.

Submit Your Cut-Sheet Specifications

Send us your required conductor size, drum length, and any project-specific jacket or marking needs. We’ll return a stock check, mill test report reference, and wholesale pricing typically within one business day.

Your project doesn’t wait on supply chain delays. Reach us by email at [insert email] or call [insert phone] to secure availability for your next delivery schedule.