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• Snow melting cables should be secured to a rigid
framework to ensure proper spacing of the heating
elements and to prevent them from “floating” in the
embedding material. This rigid framework should be
positioned so that the heating elements will be 2” to 3”
from the finished surface.
• Depending on localized weather requirements,
WarmlyYours can design an installation plan with
4” spacing between runs of cable instead of the
traditional 3” spacing, which will cut down on both
material costs and operating costs.
• When heating outdoor stairs, the stair treads should
be between 11” and 12” from the front nosing to the
back/riser. This is to ensure that there is enough room
to properly space the snow melting cable for optimal
heating coverage.
• Do not shorten the heating cable. Do NOT cut the
heating cable. Only the non-heating cold leads can
be shortened.
• Do not connect the heating cable to the power supply
for testing before it is embedded (this could lead to
dangerous overheating). Testing is only done with a
digital ohmmeter and a megohmmeter.
• Do not fold or position the warming system so that
the mesh overlaps itself or other warming cables (this
could lead to dangerous overheating).
• Do not run a power lead or sensor wire across a
warming cable.
Installation Information
Simply draw a project sketch that includes dimensions,
power source location, and the locations of any
permanent fixtures like drains, grates, trees, etc.
Send it to sales@warmlyyours.com. Then
WarmlyYours’s skilled engineers will create a free
SmartPlan™ custom installation plan based on your
drawing, typically in as little as 1 business day.
After you receive your SmartPlan™, just verify the
correct dimensions before placing your order with
your WarmlyYours account manager.
• Make sure that the manufacturer’s splice (which connects the
heating cable and the cold lead) is completely embedded.
• There should be separate conduits for the heating element
cold leads (adhere to the guidelines outlined in Appendix C in
the NEC Handbook) and the low voltage temperature sensor
extension wire.
• Cold lead connections or extensions must be done in an
accessible junction box.
• At least 6” of free non-heating lead must be present in the
junction box.
• All products must be installed in compliance with local Code.
• A snowmelt plaque is required by National Electric Code
(NEC) to mark electrically heated surfaces.
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Cross Sections
Concrete Pavers