1 Technical Specifications
| General Information | |
| Product Type | SOOW — Extra Heavy Duty Portable Cord |
| Standard | UL 62, CSA C22.2 No. 49 |
| Cable Size | 8 AWG x 3 Conductors (8/3) |
| Rated Voltage | 600V AC |
| Ampacity | 40 Amps (NEC Table 400.5(a), 3 current-carrying conductors) |
| Conductor | |
| Conductor Material | Bare Copper, fully annealed per ASTM B-174 |
| Conductor Type | Class K — extra flexible stranding |
| Conductor Stranding (8 AWG) | 133 strands x 29 AWG (typical) |
| DC Resistance at 20C | ~0.63 Ohm/1000 ft |
| Insulation & Jacket | |
| Insulation Material | EPDM (Ethylene Propylene Diene Monomer) Rubber |
| Insulation Thickness | 0.060 in (1.52 mm) |
| Jacket Material | CPE (Chlorinated Polyethylene) |
| Jacket Thickness | 0.095 in (2.41 mm) |
| Nominal Outer Diameter | 0.85 in (21.6 mm) |
| Approx. Weight | ~427-485 lbs/1000 ft (635-720 kg/km) |
| Environmental | |
| Temperature Range | -40C to +90C |
| Min. Bend Radius (flexible) | 10 x OD (~8.5 in) |
| Oil / Water / UV Resistance | Yes — per UL 62 |
| MSHA Flame Test | Passes P-136-29 |
| Packaging | |
| Standard Length | 250 ft / 500 ft per reel |
| MOQ | 500 ft |
| Lead Time | 5-15 working days |
2 Product Overview
The SOOW 8/3 extra heavy duty portable cord is rated 600V and 40 Amps for high-current industrial power supply. Built for the most demanding environments — construction sites, mining operations, shipyards, and heavy manufacturing.
The 8 AWG conductor uses 133 strands for excellent flexibility at this large gauge, while the thick CPE jacket at 0.095 inches provides maximum protection against oil, chemicals, UV, and physical abuse.
Manufactured by SORIVO. For details visit sorivocable.com/about-us/.
3 Key Features
40 Amp High Capacity
8 AWG conductors deliver 40 Amps for heavy equipment, large motors, and high-current portable power.
Extra Heavy Duty Construction
Thick 0.095 in CPE jacket and 0.060 in EPDM insulation for maximum durability in extreme conditions.
133-Strand Flexible Conductor
Fine stranding ensures manageability despite the large 8 AWG gauge size.
UL 62 & MSHA Approved
Certified for industrial and mining use. Passes MSHA flame test for underground operation.
Full Environmental Resistance
Oil, water, UV, ozone, and abrasion resistant for all-weather outdoor industrial use.
4 Applications
5 FAQ
Q: What is the ampacity of 8/3 SOOW?
A: 40 Amps per NEC Table 400.5(a) for 3 current-carrying conductors. Derating applies for ambient temperatures above 30C.
Q: What is the OD of 8/3 SOOW?
A: Approximately 0.85 inches (21.6 mm), making it a substantial cable requiring appropriately sized connectors.
Q: Can 8/3 SOOW be used for welding?
A: Yes, for the power supply to welding machines drawing up to 40A. For the welding circuit itself, dedicated welding cable is recommended.
Q: Is 8/3 SOOW MSHA approved for mining?
A: Yes. SOOW cable passes MSHA flame test P-136-29, making it suitable for underground mining environments.
Q: What is the bending radius for 8/3 SOOW?
A: Minimum 10 x OD for flexing (~8.5 in) and 6 x OD for fixed installations (~5.1 in).