•  The cable will sense this and lower it's heat output accordingly.
•  There is no risk of overheating or damage to the floor.
   

Under the carpet, there is less need for heat

Raychem RaySol self-regulating electric heat trace cables automatically adjust their power output to compensate for temperature changes. Heat is generated as electric currentpasses through the conductive polymer core between the conductors. As the temperature drops, the number of electrical paths throught the core increases and more heat is provided. Conversely, as the temperature rises, the core has fewer electrical paths and less heat is produced.

Raychem self-regulating heat trace cables:

•  Can be used for comfort floor heating or radiant space heating
•  Have a cross-linked, conductive polymer core forming a parallel circuit
•  Can be cut to length, spliced or repaired on site
•  Are protected by a tinned-copper braid encased in a thick modified polyefin outer jacket, making it rugged enough for all direct buried snow melting and anti-icing applications
•  Include state-of-the-art connection kits and accessories 

The advantages of a self-regulating underfloor heating system

Safety and reliability

In warm areas, (e.g. in the middle of the room or under carpets and furniture), less heat is produced.

In colder areas, (e.g. near doors or windows), more heat is produced.

•  Avoids overheating
•  The cable can be closely spaced
•  Maintenance-free
   

Easy Installation:

•  The cable can be cut-to-length (e.g when it needs to be adjusted to complex room shapes.)
•  The cable can be installed directly on the existing subfloor 

Energy efficieny:

•  By adjusting its output to the room temperature
•  The energy consumption is optimised.

The cable senses the need for more heat, and increases its heat output.

Near the door there is a cold draguht

•  The cable will lower its heat output automatically.
•  No risk of overheating
   

During the day, the sun heats the floor next to the window