nVent RAYCHEM WinterGard Cable 230V Mode D'emploi page 13

Spacing
Arrange the spacing (S) of the heating cable as shown:
For standard slab constructions: S = 10-12 cm for concrete
Notes:
• Keep at least 5 cm away from obstructions
• Avoid the sites of future penetrations (such as drains)
Preparing sub-surface
The heating cable should be installed on a stable subsurface. In suspended structures the substratum may consist of
finished slabs, prestressed concrete or a suspended structure with poured concrete. The heating cable can be laid on
all sub-surfaces. In the case of poured concrete, it should be ensured that the surface is smooth and all sharp objects
are removed. Ramps on a solid substratum do not require any additional thermal insulation. Appropriate preparations
should be made for installing the temperature and moisture sensor.
Cable resistance and insulation resistance test
Testing the heating cable involves the measuring of the conductor resistance and the cable electrical insulation
resistance. The conductor resistance is measured with an ohmmeter. A deviation of up to 10% from the nominal
resistance is permissible. See table on page 8.
Record all the measured values on the Installation Test Record provided.
Cold lead
Conductor
S/2
S
Area to be heated
Ohmmeter
S/2
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