UL Type THHN/THWN-2 Low-Voltage Power Single Conducto Copper 600 V cable
RHH and RHW-2:
RHH:
Very similar to RHW/RHW-2 cable. As mentioned above, the R stands for Rubber - but in this case the extra "H", or HH in RHH, stands for High Heat resistance of 90° C. The trade-off is that RHH cable does not possess the water resistance characteristic of RHW / RHW-2 cable.
Similarities: Both RHH and RHW / RHW-2 cable hold a 600 V rating. Both cables can be found in lighting, power systems and general wiring applications - depending on the location and environmental conditions.
RHW:
R = Rubber Insulation
A rubber outer layer that is very important when it comes to copper cables, especially when those cables are utilized in possible hazardous environments. Like XHHW and XHHW-2, RHW-2 wires are insulated by cross-linked polyethylene (XLPE). Even though the "R" stands for rubber, it also incorporates other neoprene insulations that XLPE falls under.
H = Heat Resistance of 75° C
Cables must be able to withstand the elements. The insulation's length and width determine its heat resistance. The thinner the XPLE insulation, the less resistant it is to heat.
W = Water Resistance
Possibly the most important factor when considering the environment of your wire. The "W" means the cables can be submerged in water if needed. Even though the wire has a rubber outer layer and is acceptable for use in damp environments, the "W" designation is required for use in the presence of water and other liquids.
Product Construction:
Conductor:
• 14 AWG thru 1000 kcmil bare annealed compressed stranded copper per ASTM B3 and ASTM B8
• 14 AWG thru 10 AWG solid plain copper per ,ASTM B3
Insulation:
• Color-coded premium-grade flame-retardant,heat- and moisture-resistant Polyvinyl Chloride(PVC)
Jacket:• Tough Polyamide (Nylon)
Print:For 14 AWG solid thru 10 AWG solid:
• GENERAL CABLE® MN (YEAR) HIGH SPEED
THHN/THWN-2 (UL) E66903 (SIZE) AWG
(SIZE MM2) GRI AND GRII 600 V VW-1 OR
T90 NYLON/TWN75 C(UL) FT1 (-25˚C)
For 14 AWG strand thru 10 AWG strand:
• GENERAL CABLE® MN (YEAR) HIGH SPEED
MTW OR THHN/THWN-2 (UL) (SIZE) AWG
(SIZE MM2) GRI AND GRII 600 V VW-1 OR
AWM OR T90 NYLON/TWN75 C(UL) FT1(-25ºC)
For 8 AWG thru 1 AWG, black only:
• GENERAL CABLE® MI (MM)/(YYYY) HIGH SPEED MTW OR THHN/THWN-2 (UL) (SIZE)
AWG (SIZE MM2) GRI AND GRII SUN RES 600
V VW-1 OR AWM OR T90 NYLON/TWN75C(UL) FT1 (-25ºC)
For 8 AWG thru 1 AWG, all colors:
• GENERAL CABLE® MI (MM)/(YYYY) HIGH SPEED MTW OR THHN/THWN-2 (UL) (SIZE)
AWG (SIZE MM2) GRI AND GRII 600 V VW-1 OR AWM OR T90 NYLON/TWN75 C(UL) FT1(-25ºC)
Print (cont'd.):
For 1/0 and larger, black only:
• GENERAL CABLE® MI (MM)/(YYYY) HIGH Speed MTW OR THHN/THWN-2 (UL) (SIZE)
AWG (SIZE MM2) GRI AND GRII SUN RES
FOR CT USE 600 V VW-1 OR AWM OR T90
NYLON/TWN75 C(UL) FT1 (-25˚C)
For 1/0 and larger, all colors:
• GENERAL CABLE® MI (MM)/(YYYY) HIGH
SPEED MTW OR THHN/THWN-2 (UL) (SIZE)
AWG (SIZE MM2) GRI AND GRII FOR CT
USE 600 V VW-1 OR AWM OR T90 NYLON/
TWN75 C(UL) FT1 (-25ºC)
Applications:
• General purpose building wire for services,feeders and branch circuits
• Conduit and raceways
• 1/0 and larger for cable tray use
Features:
• 1/0 AWG and larger are rated for cable tray use
• Rated Gasoline and Oil Resistant II
• Resistant to abrasion, acids, alkalines, ozone and water
• For THHN/THWN-2 applications, the conductor is appropriate for wet or dry locations not to exceed 90°C
• For MTW applications, the conductor is appropriate for use in dry locations at 90°C or not to exceed 60°C in wet locations or where exposed to oil or coolants (with ampacity limited to that for 75°C conductor temperature) as outlined in NFPA 79
Electrical Standards for Industrial Machinery Features (cont'd.):
• Sequential foot markings every 2 feet on 8 AWG and larger for easy measuring
• Sunlight-resistant for 8 AWG and larger,black only
• Meets cold bend and cold impact tests at-25°C
• High Speed (HS) cable features a specially designed system that allows for fast and easy cable pulls
Compliances:
Industry Compliances:
• ASTM B3 and B8
• UL Standard 83 - THHN/THWN-2
• UL Standard 1063 for machine tool wire (MTW)
• ICEA S-95-658/NEMA WC70
• NEC® Article 310
• c(UL) - T90 Nylon
Flame Test Compliances:
• UL 2556 VW-1 rated through 1 AWG
• UL 2556 CT USE 1/0 and larger
• CSA C22.2 No. 0.3-92 FT1 Vertical Flame Test
Other Compliances:
• RoHS Compliant
Packaging:
• Material cut to length and shipped on non-
returnable wood reels
Size and Specifications:
Audited Supplier 
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