THHN 500 37
- Ampacity (90C): 430
- Approx LBS/MFT: 1655.00
- AWG Size: 500
- Cond. Material: Bare Copper
- Conductor Stranding: 37
- Insul. Material: Polyvinylchloride (PVC)
- Jacket Material: Nylon
- Jacket Thickness: 0.008
- Max. Temp: 90C
- No. of Cond.: 1
- No. of Strands: 37
- Nom. Insul. Thick. (in): 0.060
- Nom. O.D. (in): 0.9020
- UL Style: MTW, 83, 1063
- Voltage: 600
500 MCM THHN Building Wire
THHN 500 37 wire is part of our large hook-up and lead wire catalog. THHN is an acronym that is defined as a wire with thermoplastic materials (T) suitable for high heat (HH) insulated with a nylon jacket. This robust wiring is both flame retardant as well as heat resistant. The thermoplastic material used is polyvinyl chloride (PVC). This wiring can be installed in dry or damp locations, which will allow for operating temperatures up to 90°C (194°F), or in wet locations with a maximum temperature of 75°C (167°F). It is important to note that heat impacts thermoplastic insulation more than thermoset insulation, so if the wiring is used in raceways or cables that are exposed to sunlight on rooftops, it is recommended that these be covered.
THHN 500 37 building wire is used for general purpose applications as set forward by the National Electrical Code (NEC). Permitting is a local function, but in most cases, 500 AWG THHN wire is permitted for use in new construction as well as in doing rewiring up to 600v.
This wire features a 500 AWG 37-stranded bare copper conductor, PVC insulation, and a Nylon jacket.
This bare copper building wire has a voltage rating of 600V and a maximum temperature of 90°C. It is suitable for use as general-purpose wiring for installation in conduit, cable trays, or other recognized raceways.
- ASTM Stranding Classes B3, B8, and B787
- AWM Specifications 1316, 1317, 1318, 1319, 1320, 1321
- Canadian Standards Association C22.2 No. 75
- Federal Specification AA59544
- Institute of Electrical and Electronics Engineers
- NEMA WC70/ICEA S-95-658
- RoHS Compliant
- Underwriters Laboratory requirements for UL-83, UL-1063, and UL-758
Our stranded THHN wire is UL approved and available in 14 to 1000 AWG. View full specifications in the table to the right.
 Allied Wire & Cable, XHHW-2 vs. THHN/THWN Wire; Mark Ode, Cable and Conductor Insulation: A study of uses and application, Electrical Contractor, 2018.
 Ode, 2018.
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