- ASTM- B3, B8, and B787 (19 Wire Combination Unilay-Stranded)
- UL Standards 83, 758, 1063, and 1581
- CSA C22.2 No.75, T90 Nylon Sizes through 1000 kcmil
- FT2 - All Sizes
- Sunlight Resistant - Sizes 8 AWG and larger
- RoHS/REACH Compliant
- UL & BPS certification
- THHN or T90 Nylon- Dry locations not to exceed 90 ° C
- THWN- Wet locations not to exceed 75°C, or dry locations not to exceed 90°C, or locations not to exceed 75°C when exposed to oil
- THWN-2- Wetordry locations not exceed 90°C or locations not to exceed 75°C when exposed to oil
Application
3.5mm THHN wire is widely used in various small and medium-sized power systems. It is a common and reliable wiring choice in the industrial and construction fields. It can be used for branch circuit wiring in buildings, such as socket loops, lighting circuits, and power supply for medium-load equipment such as air conditioners and electric heaters. It has a compact structure and is easy to install through conduits (Conduit), which complies with the building electrical specifications of many countries. In industrial applications, 3.5mm THHN wire is often used for wiring in control cabinets, connections between equipment, and motor control circuits. For example, in electrical control panels, distribution boards, and equipment junction boxes. Electrical panel and equipment wiring, used for equipment connection in the distribution board (Panel board), such as switches, circuit breakers, relays, etc., with a rated temperature of up to 90°C (dry environment), which meets the operating requirements of heat load equipment.
Feature
THHN wire 3.5mm is usually a stranded structure, equivalent to 12 AWG, and the conductor is made of high-quality copper to ensure low resistance and high-efficiency current transmission. Its insulation part consists of a 0.4mm thick PVC insulation layer and a 0.10mm thick nylon sheath, which not only provides good electrical insulation, but also enhances the protection against oil, chemical corrosion and mechanical damage. The overall outer diameter is about 3.40mm, the structure is compact, and it is easy to lay and install through pipes. Its minimum insulation resistance is 110 mΩ/kM, ensuring stable electrical performance during long-distance wiring.
Similarly, we have a full range of specifications,
Certification
THHN wire is UL certified under UL83, file number E544861 that can be verified directly on the official UL website. UL certification meeting the standard required for major government and infrastructure projects. That ensures consistent safety and performance across residential, commercial, and industrial applications.
Package
Production Line
Greater Wire is an experienced THHN wire manufacturer with a fully integrated intelligent digital manufacturing plant designed to improve production efficiency while maintaining the highest international quality standards. Our factory uses advanced automated production lines with an accuracy of up to 0.002 mm to ensure that every detail of wire and cable manufacturing is accurate and correct.
Each cable is 100% inspected throughout the entire process, from raw material processing to final packaging, to ensure that there is no compromise in quality. This strict quality control system not only guarantees product consistency but also enhances customer confidence in every order. By eliminating human errors through automation and intelligent control systems, we significantly reduce the possibility of defects, delays, and inconsistencies.
Case
Partner
FAQ
Q: What is the current carrying capacity of 3.5 mm2 thhn wire ?
Q:Can 3.5 mm2 thhn wire be used in wet environments ?
Q: What is the outer diameter and weight of 3.5 mm2 thhn wire ?
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| Lead-Free Thermoplastic Heat-Resistant Electrical Wire with Nylon Sheath (Thhn/Thwn-2). 600V . 90℃ | |||||||||
| Conductor Size | No. & Nominal Diameter of Wire | Wall Thickness | Approximate Overall Diameter | Minimum Insulation Resistance | * Ampacity | Cable Nominal Weight | |||
| (mm) | (AWG) | (mm) | PVC (mm) | Nylon (mm) | (mm) | mΩ/kM | 90℃ Wet | 90℃ Dry | KG/kM |
| THWN | THHN | ||||||||
| Solid | |||||||||
| 1.6mm | 14 | 1x1.60mm | 0.4 | 0.10 | 2.60 | 130 | 35 | 35 | 22.62 |
| 2.0mm | 12 | 1x2.00mm | 0.4 | 0.10 | 3.00 | 110 | 40 | 40 | 33.57 |
| 2.6mm | 10 | 1x2.60mm | 0.5 | 0.10 | 3.80 | 120 | 55 | 55 | 55.78 |
| 3.2mm | 8 | 1x3.20mm | 0.8 | 0.13 | 5.06 | 120 | 75 | 75 | 88.33 |
| Stranded | |||||||||
| 2.0mm² | 14/7 | 7/0.60 | 0.4 | 0.10 | 2.80 | 130 | 30 | 35 | 23.51 |
| 3.5mm² | 12/7 | 7/0.80 | 0.4 | 0.10 | 3.40 | 110 | 35 | 40 | 39.12 |
| 5.5mm² | 10/7 | 7/1.00 | 0.5 | 0.10 | 4.20 | 120 | 50 | 55 | 60.56 |
| 8.0mm² | 8/7 | 7/1.20 | 0.8 | 0.13 | 5.46 | 120 | 65 | 75 | 91.95 |
| 14mm² | 6/7 | 7/1.60 | 0.8 | 0.13 | 6.66 | 100 | 95 | 105 | 151.77 |
| 22mm² | 4/7 | 7/2.00 | 1 | 0.15 | 8.30 | 100 | 130 | 140 | 236.65 |
| 30mm² | 2/7 | 7/2.30 | 1 | 0.15 | 9.20 | 100 | 160 | 170 | 306.50 |
| 38mm² | 1-19 | 19/1.60 | 1.3 | 0.18 | 10.96 | 100 | 185 | 195 | 409.82 |
| 50mm² | 1/0-19 | 19/1.80 | 1.3 | 0.18 | 11.96 | 100 | 220 | 235 | 509.05 |
| 60mm² | 2/0-19 | 19/2.00 | 1.3 | 0.18 | 12.96 | 80 | 250 | 260 | 618.96 |
| 80mm² | 3/0-19 | 19/2.30 | 1.3 | 0.18 | 14.46 | 80 | 300 | 320 | 804.44 |
| 100mm² | 4/0-19 | 19/2.60 | 1.3 | 0.18 | 15.96 | 80 | 355 | 370 | 1013.94 |
| 125mm² | 250 MCM | 37/2.10 | 1.6 | 0.18 | 18.26 | 80 | 400 | 420 | 1296.37 |
| 150mm² | 300 MCM | 37/2.30 | 1.6 | 0.20 | 19.70 | 80 | 440 | 475 | 1542.02 |
| 350 MCM | 37/2.47 | 1.6 | 0.20 | 20.90 | 60 | 505 | 523 | 1783.07 | |
| 200mm² | 400 MCM | 37/2.60 | 1.6 | 0.20 | 21.80 | 60 | 540 | 570 | 1946.72 |
| 500 MCM | 37/2.95 | 1.6 | 0.20 | 24.25 | 60 | 620 | 655 | 2486.02 | |
| 250mm² | 500 MCM | 61/2.30 | 1.6 | 0.20 | 24.30 | 60 | 620 | 655 | 2437.34 |
| 600 MCM | 61/2.52 | 1.8 | 0.23 | 26.76 | 60 | 690 | 710 | 2995.93 | |
| 325mm² | 650 MCM | 61/2.60 | 1.8 | 0.23 | 27.46 | 60 | 720 | 770 | 3191.58 |
| 750 MCM | 61/2.82 | 1.8 | 0.23 | 29.36 | 60 | 785 | 820 | 3719.63 | |
| 400mm² | 800 MCM | 61/2.90 | 1.8 | 0.23 | 30.16 | 60 | 810 | 875 | 3927.55 |
| 500mm² | 1000 MCM | 61/3.20 | 1.8 | 0.23 | 32.86 | 60 | 930 | 995 | 4750.91 |
| Reference standards: PEC, NEC (based on an ambient temperature of 30°C) | |||||||||
