PRODUCT REAL SHOT
Thermal Expansion Resistant PVC Jacketed Wiring：300 kcmil MC Cable
The 300 kcmil 3/C XHHW-2 MC cable with ground PVC jacket and 300 kcmil 4/C XHHW-2 PVC jacketed MC cable are 600V UL & NEC 330 compliant armored cables, uniquely optimized to resist thermal expansion and contraction deformation in cyclic high-load operation. Featuring a tightly integrated layered structure with premium XHHW-2 insulation, precision AIA interlocking armor and seamless PVC outer jacket, these large-gauge cables effectively offset structural stress generated by long-term 90°C high-temperature operation and intermittent temperature changes. It prevents common on-site issues such as conductor displacement, insulation extrusion, jacket cracking and internal core friction, maintaining complete structural integrity and stable electrical performance throughout years of cyclic heating and cooling.
PRODUCT SPECIFICATIONS
| Conductors |
Outside Diameter Over Armor (in) |
Outside Diameter Over Jacket (in) |
PVC Thickness (in) |
Approximate Net Weight (lbs/1000ft) |
Allowable Ampacity (Amps) |
Standard Packaging | ||||
| AWG/NO. | Type | Ground | 75℃ | 90℃ | Reels | |||||
| 250-3 | Stranded | 4 AWG Bare | 1.721 | 1.841 | 0.060 | 3456.79 | 255 | 290 | 1000' | |
| 250-4 | Stranded | 4 AWG Bare | 1.900 | 2.020 | 0.060 | 4373.33 | 255 | 290 |
1000' |
|
|
300-3 |
Stranded | 3 AWG Bare | 1.833 | 1.953 | 0.060 | 4013.71 | 285 | 320 | 1000' | |
| 300-4 | Stranded | 3 AWG Bare | 2.077 | 2.197 | 0.060 | 5296.62 | 285 | 320 | 1000' | |
| 350-3 | Stranded | 3 AWG Bare | 1.934 | 2.054 | 0.060 | 4536.67 | 310 | 350 | 1000' | |
| 350-4 | Stranded | 3 AWG Bare | 2.191 | 2.311 | 0.060 | 6028.19 | 310 | 350 | 1000' | |
| 400-3 | Stranded | 3 AWG Bare | 2.079 | 2.199 | 0.060 | 5289.32 | 335 | 380 | 1000' | |
| 400-4 | Stranded | 3 AWG Bare | 2.297 | 2.447 | 0.075 | 6784.33 | 335 | 380 | 1000' | |
| 500-3 | Stranded | 2 AWG Bare | 2.253 | 2.403 | 0.075 | 6396.68 | 380 | 430 | 1000' | |
| 500-4 | Stranded | 2 AWG Bare | 2.494 | 2.644 | 0.075 | 8143.19 | 380 | 430 | 1000' | |
| 600-3 | Stranded | 2 AWG Bare | 2.521 | 2.671 | 0.075 | 7551.45 | 420 | 475 | 1000' | |
| 600-4 | Stranded | 2 AWG Bare | 2.790 | 2.940 | 0.075 | 9642.22 | 420 | 475 | 1000' | |
| 750-3 | Stranded | 1 AWG Bare | 2.738 | 2.888 | 0.075 | 9126.06 | 475 | 535 | 1000' | |
| 750-4 | Stranded | 1 AWG Bare | 3.036 | 3.186 | 0.075 | 11754.11 | 475 | 535 | 1000' | |
CERTIFICATIONS
PACKAGING
Roll
Small Wooden Reel
Large Wooden Reel
APPLICATION
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WHY CHOOSE US
in one-stop service
Dongguan Greater Wire & Cable Co., Ltd. is a professional engineering-grade cable manufacturer in China, supplying certified electrical cable solutions for building, industrial, mining, energy, and infrastructure projects worldwide.
With a 30,000 m² factory, 30 production lines, experienced engineers, and a strict quality control team, we provide reliable, traceable, and compliant cable products for international engineering applications. Our products are supported by certifications including SAA, UL, cUL, VDE, TÜV, CE, CB, IEC, BPS, and ISO.
We are committed to safety, quality, transparency, and long-term partnership. From raw material inspection to finished product testing, every batch is carefully controlled to ensure stable performance and dependable project use.
Greater Cable - Certified Quality. Reliable Supply. Engineering Value.
PLANT EQUIPMENT
GLOBAL CERTIFICATIONS
CUSTOMER PHOTOS
INTERNATIONL TRANSPORTATION
01
Sea Freight
We offer reliable sea freight solutions for large-volume orders. Your goods are securely packed and shipped in containers, ensuring cost-effective delivery to ports worldwide.
02
Air Freight
For faster delivery, our air freight service ensures your products reach international destinations quickly, with careful handling and full tracking along the way.
03
International Express
Need urgent shipments? Our international express service delivers small to medium orders efficiently, providing door-to-door service with real-time tracking for peace of mind.
COOPERATIVE PARTNER
We are looking for a cooperative partner to expand our business.
Simply share your requirements, receive our professional solution, confirm samples, and enjoy fast, reliable production and worldwide delivery - working with us is that easy.
Our address
Building 2, No. 40 Luxi 2nd Road, Liaobu Town, Dongguan City, Guangdong Province, China
Phone Number
+86 136 6257 9592
+86 135 1078 4550
manager01@greaterwire.com
FAQ
Why is thermal expansion and contraction resistance critical for 300 kcmil large-gauge MC cables?
Large-size 300 kcmil copper conductors generate obvious thermal expansion under continuous high-load 90°C operation and shrink during standby cooling. Ordinary large-gauge cables are prone to internal core displacement, insulation squeezing and jacket cracking after repeated temperature cycles. Our 300 kcmil 3/C XHHW-2 MC cable with ground PVC jacket and 300 kcmil 4/C XHHW-2 PVC jacketed MC cable adopt an integrated anti-deformation structure to eliminate these hidden dangers, ensuring long-term stable operation.
What engineering scenarios are most suitable for these thermally stable 300 kcmil MC cables?
They are perfectly tailored for power circuits with frequent load fluctuations and periodic temperature changes, including industrial production line power loops, commercial building peak-valley power supply systems, and long-running vertical riser circuits. These scenarios require cables to withstand frequent thermal expansion and contraction, making our deformation-resistant MC cables the optimal choice.
What is the actual ampacity difference between 300 kcmil 3/C and 4/C MC cable?
Although both feature 300 kcmil large-gauge conductors, the 4/C configuration has a slightly adjusted overall cable structure layout. The 300 kcmil 3/C XHHW-2 MC cable with ground PVC jacket delivers higher single-circuit ampacity for pure three-phase load systems, while the 300 kcmil 4/C XHHW-2 PVC jacketed MC cable retains stable rated current while reserving neutral wire load capacity, catering to mixed-load power supply scenarios with unbalanced current.
What are the differences in grounding application between 3/C and 4/C models?
The 300 kcmil 3/C XHHW-2 MC cable with ground PVC jacket is equipped with an independent dedicated ground wire, focusing on reliable grounding for standard three-phase industrial equipment. The 300 kcmil 4/C XHHW-2 PVC jacketed MC cable integrates neutral and grounding compatible layout, which can meet both power supply zero-line matching and system shielding grounding requirements for complex commercial electrical systems.
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