About Industry Designation for Cable Insulation
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About Extension Cords
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About Heaters for Pipes and Tubes
Self-Regulating Heat Cable—Adjusts its heat output in response to surface as well as surrounding temperatures.
Constant-Wattage Heat Cable—Always puts out the designated amount of watts/ft., regardless of the surrounding temperature.
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Turn-Lock Extension Cords for Harsh Environments





These cords have an oil- and water-resistant insulation and impact-resistant connectors for protection in harsh environments. Give the connectors a quarter turn to lock in place; they remaining secure in high-vibration applications.
Cord | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Lg., ft. | Wire Ga. | Current, A | Voltage | Power-Indicating Light | OD | Insulation Material | Industry Designation | Specifications Met | Color | Each | |
NEMA L16-20 Plug × L16-20 Socket | |||||||||||
25 | 12 | 20 | 480V AC | Without Power-Indicating Light | 0.69" | Rubber | SOOW | UL Listed | Yellow | 0000000 | 0000000 |
NEMA L16-30 Plug × L16-30 Socket | |||||||||||
25 | 10 | 30 | 480V AC | Without Power-Indicating Light | 0.75" | Rubber | SOOW | UL Listed | Yellow | 0000000 | 000000 |
IEC Pin-and-Sleeve Connectors
These connectors meet international standards IEC 60309-1 and 60309-2, so they’re compatible with other IEC 60309 devices. They have a nonconductive nylon housing so they’re safer to use than components made of metal. Plugs have a notch that must line up with a keyway in sockets and receptacles when mating. All have a ground pin that is included in the number of wires.
IP67 rated connectors protect against dust and submersion.
For technical drawings and 3-D models, click on a part number.


3W4P
Female
20 ft. Cable Lead | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Face Dia. | No. of Poles | No. of Ground Connections | No. of Wires | Industry Designation | Electrical Phase | Current | Wire Connection Type | Wire Lead Gauge | Temp. Range, °F | Voltage | Each | |
Rated IP67 | ||||||||||||
3" | 4 | 1 | 3 | 3W4P | Three | 100A | Wire Leads | 2 | 0° to 120° | 480V AC | 000000000 | 000000000 |
Constant-Wattage Heaters for Pipes and Tubes



Since these heaters continually supply the same wattage regardless of the surrounding temperature, they’re less prone to power surges than self-regulating heaters. All require a temperature switch or controller (sold separately) to regulate heat output. They’re often used to maintain liquid temperature and viscosity and provide freeze protection in pipe and tube systems. To prevent burnout, heaters must not be overlapped and must be in full contact with the surface being heated. All have a plastic cable cover for corrosion resistance and durability. They are FM approved for hazardous locations. A power-connection/termination kit (sold separately) is required.
Power-connection/termination kit (sold separately) includes a junction box and a three-point DIN-mount terminal block. It also includes adhesive, an end cap, and a power-connection cover.
Termination kit (sold separately) includes adhesive, an end cap, and a power-connection cover.
LED termination kit (sold separately) has a high-visibility green LED to indicate when the heater is on. It also includes adhesive, an end cap, and a power-connection cover.
Note: Only install these heaters in accessible locations; do not install them behind walls, underground, or in other difficult-to-access areas. Use fiberglass tape or heat-transfer putty to install them directly on surfaces that are free of dirt, grease, and rough edges. Do not use electrical tape, duct tape, metal bands, or wire. To prevent heat loss and protect heaters from moisture and corrosion, wrap them with fiberglass insulation.
Per Ft. | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Watt Density, W/ft. | Wd. | Thick. | Max. Lg., ft. | Environment Temp. Range, °F | Wire Connection Type | Cable Cover Material | For Surface Material | Environment | For Use Outdoors | 1-99 | 100-Up | |
150° F Max. Heat Output | ||||||||||||
480V AC, Single Phase | ||||||||||||
10 | 1/2" | 11/32" | 500 | -40° to 400° | Wire Leads | Plastic | Metal | Hazardous Location | No | 00000000 | 000000 | 000000 |
300° F Max. Heat Output | ||||||||||||
480V AC, Single Phase | ||||||||||||
10 | 1/2" | 11/32" | 500 | -60° to 500° | Wire Leads | Plastic | Metal | Hazardous Location | No | 00000000 | 00000 | 00000 |
15 | 1/2" | 11/32" | 500 | -60° to 500° | Wire Leads | Plastic | Metal | Hazardous Location | No | 00000000 | 00000 | 00000 |
20 | 1/2" | 11/32" | 500 | -60° to 500° | Wire Leads | Plastic | Metal | Hazardous Location | No | 00000000 | 00000 | 00000 |