Series Constant Wattage Heat Tracing - How It Works?

By Terry McDonald on 12th February, 2014

Follow us on LinkedIn

Series Constant Wattage Heat Tracing - How It Works?

Series Constant Wattage Heat Tracing Cables

A seriesheat tracing cable is made of a run of high-resistance wire, insulated and often enclosed in a protective jacket. Constant wattage heat tracing cables are powered at a specific voltage and the resistance of the wire creates heat.

The main disadvantage of a constant wattage heat tracing cable is that they can not be crossed over on themselves as they will overheat and burn out. Trace heating cables of this type are usually supplied in specific lengths and cant be cut to length in the field.

The main advantages include long circuit lengths and they can be exposed to high temperatures.  Mineral insulated heating cables are good for maintaining high temperatures on process lines or maintaining lower temperatures on lines which can get extremely hot such as high temperature steam lines.

Typically series elements are used on long pipe line process heating, for example long oil pipe lines and quay side of load pipes on oil refineries.

T&D are the largest UK stockist of heat tracing cables. We distribute for all leading manufacturers including Thermon, Chromalox, Nelson, Thermocoax ISOPAD and Eltherm or click on the links below for more information.

Heat Tracing Cables

Heat Tracing Commercial Applications

Frost Protection
Hot Water Temperature Maintenance
Roof & Gutter Heating
Ramp Heating (Snow & Ice Melting)
Fire Escape Heat Tracing

Heat Tracing Industrial Applications

Frost Protection
Process Temperature Maintenance
Tank & Vessel Heating
Hopper Heating
Foundation Heating / Frost Heave



Category:  Heat Tracing

Go back to blog index


UK Time - GMT:


Heat Tracing - Thorne & Derrick