Cable Resistance And Insulation Resistance Test - nVent RAYCHEM EM4-CW Manuel D'installation

Spacing
Arrange the spacing (S) of the heating cable as
shown:
Area to be heated
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

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
Cold lead
Conductor
10 | nVent.com
S/2
S/2
S
For standard slab constructions:
S = 8-10 cm for concrete
Notes:
• Keep at least 5 cm away from
obstructions
• Avoid the sites of future penetrations
(such as drains)
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.
resistance is measured with an ohmmeter.
A deviation of up to 10% from the nominal
resistance is permissible. See table on page 6.
Record all the measured
values on the Installation
Test Record provided.
Ohmmeter