THHN Wire

THHN (Thermoplastic High Heat-resistant Nylon) wire consists of a stranded or solid, bare copper or aluminum conductor with a thermoplastic insulation and a nylon jacket. THHN building wire is ideal for use in appliances, machine tools and control circuit wiring. Type THHN is suitable for use in dry locations with temperatures not exceeding 90 degrees Celsius.

THWN (Thermoplastic Heat and Wet-resistant Nylon) wire is similar to THHN, with the added benefit of moisture-resistance. This allows THWN to be used without conduit, however, the heat-resistance is not as high as THHN. THWN should only be used in locations that won’t exceed 75 degrees Celsius. 

THWN-2 wire is similar to THWN, with the added benefit of greater heat-resistance. THWN-2 can be used in both wet and dry locations with temperatures up to 90 degrees Celsius.

THHN vs MTW: THHN consists of a stranded or solid, bare copper or aluminum conductor with a thermoplastic insulation and a nylon jacket. MTW consists of stranded, bare copper conductors insulated with polyvinyl chloride (PVC). Although both MTW and THHN are well suited for similar applications, THHN wire’s nylon jacket causes it to be less flexible than MTW wire. 

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$183.60
Southwire THHN 14 gauge stranded yellow wire 500' roll. Max 600VAC, 15 Amp with PVC inslulation and Nylon jacket .109" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$183.60
Southwire THHN 14 gauge stranded white wire 500' roll. Max 600VAC, 15 Amp with PVC inslulation and Nylon jacket .109" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$183.60
Southwire THHN 14 gauge stranded red wire 500' roll. Max 600VAC, 15 Amp with PVC inslulation and Nylon jacket .109" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$183.60
Southwire THHN 14 gauge stranded purple wire 500' roll. Max 600VAC, 15 Amp with PVC inslulation and Nylon jacket .109" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$183.60
Southwire THHN 14 gauge stranded pink wire 500' roll. Max 600VAC, 15 Amp with PVC inslulation and Nylon jacket .109" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$183.60
Southwire THHN 14 gauge stranded orange wire 500' roll. Max 600VAC, 15 Amp with PVC inslulation and Nylon jacket .109" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$183.60
Southwire THHN 14 gauge stranded green wire 500' roll. Max 600VAC, 15 Amp with PVC inslulation and Nylon jacket .109" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$183.60
Southwire THHN 14 gauge stranded gray wire 500' roll. Max 600VAC, 15 Amp with PVC inslulation and Nylon jacket .109" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$183.60
Southwire THHN 14 gauge stranded brown wire 500' roll. Max 600VAC, 15 Amp with PVC inslulation and Nylon jacket .109" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$183.60
Southwire THHN 14 gauge stranded blue wire 500' roll. Max 600VAC, 15 Amp with PVC inslulation and Nylon jacket .109" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$183.60
Southwire THHN 14 gauge stranded black wire 500' roll. Max 600VAC, 15 Amp with PVC inslulation and Nylon jacket .109" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$271.32
Southwire THHN 12 gauge stranded yellow wire 500' roll. Max 600VAC, 20 Amp with PVC inslulation and Nylon jacket .128" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$271.32
Southwire THHN 12 gauge stranded white wire 500' roll. Max 600VAC, 20 Amp with PVC inslulation and Nylon jacket .128" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$271.32
Southwire THHN 12 gauge stranded red wire 500' roll. Max 600VAC, 20 Amp with PVC inslulation and Nylon jacket .128" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$271.32
Southwire THHN 12 gauge stranded purple wire 500' roll. Max 600VAC, 20 Amp with PVC inslulation and Nylon jacket .128" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$271.32
Southwire THHN 12 gauge stranded pink wire 500' roll. Max 600VAC, 20 Amp with PVC inslulation and Nylon jacket .128" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$271.32
Southwire THHN 12 gauge stranded orange wire 500' roll. Max 600VAC, 20 Amp with PVC inslulation and Nylon jacket .128" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$271.32
Southwire THHN 12 gauge stranded green wire 500' roll. Max 600VAC, 20 Amp with PVC inslulation and Nylon jacket .128" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$271.32
Southwire THHN 12 gauge stranded brown wire 500' roll. Max 600VAC, 20 Amp with PVC inslulation and Nylon jacket .128" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$271.32
Southwire THHN 12 gauge stranded blue wire 500' roll. Max 600VAC, 20 Amp with PVC inslulation and Nylon jacket .128" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$271.32
Southwire THHN 12 gauge stranded black wire 500' roll. Max 600VAC, 20 Amp with PVC inslulation and Nylon jacket .128" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$396.23
Southwire THHN 12 gauge solid green wire 500' roll. Max 600VAC, 20 Amp with PVC inslulation and Nylon jacket .128" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$414.94
Southwire THHN 10 gauge stranded yellow wire 500' roll. Max 600VAC, 30 Amp with PVC inslulation and Nylon jacket .161" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$414.94
Southwire THHN 10 gauge stranded white wire 500' roll. Max 600VAC, 30 Amp with PVC inslulation and Nylon jacket .161" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$414.94
Southwire THHN 10 gauge stranded red wire 500' roll. Max 600VAC, 30 Amp with PVC inslulation and Nylon jacket .161" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$414.94
Southwire THHN 10 gauge stranded purple wire 500' roll. Max 600VAC, 30 Amp with PVC inslulation and Nylon jacket .161" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$414.94
Southwire THHN 10 gauge stranded orange wire 500' roll. Max 600VAC, 30 Amp with PVC inslulation and Nylon jacket .161" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$414.94
Southwire THHN 10 gauge stranded green wire 500' roll. Max 600VAC, 30 Amp with PVC inslulation and Nylon jacket .161" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$414.94
Southwire THHN 10 gauge stranded brown wire 500' roll. Max 600VAC, 30 Amp with PVC inslulation and Nylon jacket .161" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$414.94
Southwire THHN 10 gauge stranded blue wire 500' roll. Max 600VAC, 30 Amp with PVC inslulation and Nylon jacket .161" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$414.94
Southwire THHN 10 gauge stranded black wire 500' roll. Max 600VAC, 30 Amp with PVC inslulation and Nylon jacket .161" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$753.26
Southwire THHN 8 gauge stranded yellow wire 500' roll. Max 600VAC, 40 Amp with PVC inslulation and Nylon jacket .213" diamater rated at 140 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$753.26
Southwire THHN 8 gauge stranded white wire 500' roll. Max 600VAC, 40 Amp with PVC inslulation and Nylon jacket .213" diamater rated at 140 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$753.26
Southwire THHN 8 gauge stranded red wire 500' roll. Max 600VAC, 40 Amp with PVC inslulation and Nylon jacket .213" diamater rated at 140 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$753.26
Southwire THHN 8 gauge stranded orange wire 500' roll. Max 600VAC, 40 Amp with PVC inslulation and Nylon jacket .213" diamater rated at 140 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$753.26
Southwire THHN 8 gauge stranded green wire 500' roll. Max 600VAC, 40 Amp with PVC inslulation and Nylon jacket .213" diamater rated at 140 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$753.26
Southwire THHN 8 gauge stranded brown wire 500' roll. Max 600VAC, 40 Amp with PVC inslulation and Nylon jacket .213" diamater rated at 140 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$753.26
Southwire THHN 8 gauge stranded blue wire 500' roll. Max 600VAC, 40 Amp with PVC inslulation and Nylon jacket .213" diamater rated at 140 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$753.26
Southwire THHN 8 gauge stranded black wire 500' roll. Max 600VAC, 40 Amp with PVC inslulation and Nylon jacket .213" diamater rated at 140 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$1158.90
Southwire THHN 6 gauge stranded yellow wire 500' roll. Max 600VAC, 65 Amp with PVC inslulation and Nylon jacket .249" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$1158.90
Southwire THHN 6 gauge stranded white wire 500' roll. Max 600VAC, 65 Amp with PVC inslulation and Nylon jacket .249" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$1158.90
Southwire THHN 6 gauge stranded red wire 500' roll. Max 600VAC, 65 Amp with PVC inslulation and Nylon jacket .249" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$1158.90
Southwire THHN 6 gauge stranded orange wire 500' roll. Max 600VAC, 65 Amp with PVC inslulation and Nylon jacket .249" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$1158.90
Southwire THHN 6 gauge stranded green wire 500' roll. Max 600VAC, 65 Amp with PVC inslulation and Nylon jacket .249" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$1158.90
Southwire THHN 6 gauge stranded brown wire 500' roll. Max 600VAC, 65 Amp with PVC inslulation and Nylon jacket .249" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$1158.90
Southwire THHN 6 gauge stranded blue wire 500' roll. Max 600VAC, 65 Amp with PVC inslulation and Nylon jacket .249" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.
$1158.90
Southwire THHN 6 gauge stranded black wire 500' roll. Max 600VAC, 65 Amp with PVC inslulation and Nylon jacket .249" diamater rated at 194 F. Annealed copper class C stranding with Color-coded, Polyvinyl Chloride (PVC) heat- and moisture resistant, flame-retardant compound per UL 1063 and UL 83.