Heating Cable Components
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4.1 General Component Information
RAYCHEM components must be used with RAYCHEM
self-regulating and power-limiting heating cables.
A complete circuit requires a power connection and an
end seal. Splices and tees are used as needed.
Use the Industrial Product Selection and Design Guide
or TraceCalc Pro to select appropriate components.
Installation instructions are included with the
component kit. Steps for preparing the heating cable
and connecting to components must be followed.
RAYCHEM self-regulating and power-limiting heating
cables are parallel circuit design. Do not twist the
conductors together as this will result in a short circuit.
Component Installation Tips
• Connection kits should be mounted on top of the pipe
when practical. Electrical conduit leading to power
connection kits should have low-point drains to keep
condensation from accumulating in the conduit.
All heating cable connections must be mounted
above grade level.
• Special adapters are available for mounting on small
pipes. Be sure to use these adapters if installing
cables on pipes of 1 inch O.D. or less.
• Be sure to leave a service loop at all components
for future maintenance, except when temperature-
sensitive fluids are involved or when the pipe is
smaller than 1 inch.
• Locate junction boxes for easy access, but not where
they may be exposed to mechanical abuse.
• Heating cables must be installed over, not under,
pipe straps used to secure components.
• For VPL, cut cable 12” (30 cm) from last active
node (indentation) to be sure an inactive zone is
used to enter the component. Refer to component
installation instructions.
