Constant-Wattage Heating Cable (KM)
Constant Wattage Heating Cable provides a precise and constant temperature output regardless of ambient and/or surface temperature. This heating cable is ideal for process maintece applications requiring mid-high operating temperatures, up to 500F (260C).
- 12 W/ft (39 W/m)
- 120V
Since 1949
Additional Features:
- Power remains constant regardless of temperature
- Moisture, chemical, flame, and radiation resistant
- Durable Construction: impact resistant fiberglass insulation core with tinned copper over braid
Ideal for:
- Freeze protection
- Viscosity control
- High temperature process control
- Power plants
- Oil refineries
- Water treatment plants
- Food processing plants
- Other explosive atmospheres
Exposure Temperature Range: -22°F to 500°F (-30°C to 260°C)
Minimum Bend Radius: 1.0 in (25 mm)
Bus Wires Gauge: 12 AWG
Dimensions: 0.2 in x 0.3 in (5 mm x 8 mm)
Weight: 45 lb (20 kg) per 500-foot (152 m) spool
FM Approved: Ordinary Locations
FM Approved: Hazardous Locations:
- Class I Division 2 Groups B, C, D
- Class II Division 2 Groups F, G
- Class III Division 2
Approval valid only when used with appropriate heating cable and installation accessories, and installed in accordance with all applicable instructions, codes, and regulations.
Maximum Circuit Length in ft (m)
| Cable Type | 120 VAC | 208 VAC | 240 VAC | 277 VAC | 480 VAC |
| 4 watts/ft (13 watts/m) | 480 (146) | 830 (253) | 960 (293) | 1110 (338) | 1920 (585) |
| 8 watts/ft (26 watts/m) | 240 (73) | 415 (127) | 480 (146) | 555 (169) | 960 (293) |
| 12 watts/ft (39 watts/m) | 160 (49) | 277 (85) | 320 (98) | 370 (113) | 640 (195) |
Circuit Module Length in ft (m)
| Cable Type | 120 VAC | 208 VAC | 240 VAC | 277 VAC | 480 VAC |
| 4 watts/ft (13 watts/m) | 4 (1.2) | 4 (1.2) | 4 (1.2) | 4 (1.2) | 8 (2.4) |
| 8 watts/ft (26 watts/m) | 4 (1.2) | 4 (1.2) | 4 (1.2) | 4 (1.2) | 6 (1.8) |
| 12 watts/ft (39 watts/m) | 4 (1.2) | 6 (1.8) | 4 (1.2) | 4 (1.2) | 4 (1.2) |
How does Constant Wattage Work?