Application
Type RHH or RHW-2 or USE-2 conductors are used with conduit as specified in the National Electrical Code. When used as Type USE-2, conductors are suitable for use as underground service entrance conductors for direct burial at conductor temperatures not to exceed 90°C. When used as RHW-2 or USE-2, conductor temperatures shall not exceed 90°C in wet or dry locations. Voltage rating for RHW-2 or RHH or USE-2 conductors is 600 volts.
Construction
Type RHH or RHW-2 or USE-2 copper conductors are annealed (soft) copper. Insulation is an abrasion, moisture, heat, and sunlight resistant black crosslinked polyethylene (XLP). An optional CT rated product is available upon request for sizes 1/0 and larger.
Features
● Conductor for reduced diameter
● General purpose use in construction:
● Residential
● Commercial
● Institutional
● Industrial construction
Standards & References
Type RHH or RHW-2 or USE-2 conductors comply with the following:
● ASTM – B3, B8 (7, 19, 37, 61 Strands), B787 (19 Wire Combination Unilay Strand)
● UL 44 for RHH or RHW-2
● UL 854 for USE-2
● National Electrical Code, NFPA 70, 2011 Edition
● NEMA WC-70 Construction Requirements
● RoHS/Reach Compliant
Technical Parameter
RHH/RHW-2/USE-2 COPPER CONDUCTOR ASTM- B3,B8,B8487 UL 44 UL854 | ||||||||
Conductor | Insulation thickness | Nominal O.D. | Approx. weight | Ampacity+ | ||||
AG/kcmil | Min.No. | mm | miles | mm | kg/km | 60℃ | 75℃ | 90℃ |
14 | 7 | 1.14 | 45 | 4.1 | 30 | 15 | 15 | 15 |
12 | 7 | 1.14 | 45 | 4.5 | 43 | 20 | 20 | 20 |
10 | 7 | 1.14 | 45 | 5.2 | 64 | 30 | 30 | 30 |
8 | 7 | 1.52 | 60 | 6.4 | 102 | 40 | 50 | 55 |
6 | 7 | 1.52 | 60 | 7.3 | 151 | 55 | 65 | 75 |
4 | 7 | 1.52 | 60 | 8.5 | 229 | 70 | 85 | 95 |
2 | 7 | 1.52 | 60 | 9.9 | 349 | 95 | 115 | 130 |
1 | 18 | 2.03 | 80 | 11.7 | 452 | 110 | 130 | 145 |
1/0 | 18 | 2.03 | 80 | 12.6 | 559 | 125 | 150 | 170 |
2/0 | 18 | 2.03 | 80 | 13.6 | 693 | 145 | 175 | 195 |
3/0 | 18 | 2.03 | 80 | 14.8 | 861 | 165 | 200 | 225 |
4/0 | 18 | 2.03 | 80 | 16.1 | 1069 | 195 | 230 | 260 |
250 | 35 | 2.41 | 95 | 18 | 1282 | 215 | 255 | 290 |
300 | 35 | 2.41 | 95 | 19.3 | 1519 | 240 | 285 | 320 |
8 | 35 | 2.41 | 95 | 20.5 | 1756 | 260 | 310 | 350 |
400 | 35 | 2.41 | 95 | 21.6 | 2001 | 280 | 335 | 380 |
500 | 35 | 2.41 | 95 | 23.5 | 2470 | 320 | 380 | 430 |
600 | 58 | 2.79 | 110 | 26.2 | 2983 | 350 | 420 | 475 |
700 | 58 | 2.79 | 110 | 27.9 | 3461 | 385 | 460 | 520 |
750 | 58 | 2.79 | 110 | 28.6 | 3695 | 400 | 475 | 535 |
900 | 58 | 2.79 | 110 | 31 | 4407 | 435 | 520 | 585 |
1000 | 58 | 2.79 | 110 | 32.5 | 4884 | 455 | 545 | 615 |






