Raychem EM4-CW Installations- Und Betriebshandbuch Seite 10

Cold lead
Conductor
Heating cable installation
Keep connection end of cable dry before and during installation.
All connections and electrical testing should be carried out by a qualified electrician.
The heating cable should not be:
• cut or damaged,
• installed across expansion joints or separate concrete slabs.
Minimum cable spacing is 8 cm
The heating cable must be secured to the underlying surface to prevent movement
during the installation.
The cold lead cable should be protected in a conduit. The entire length of heating cable
should be covered by wet sand-cement mixture, screed, or dry sand depending on the
selected top surface.
Ramp heating embedded in concrete / cement screed
Concrete / Cement
screed ground
10
Insulation resistance tester
80-100 mm for
250-300W/m
EM4-CW-Cable
Concrete / compacted
substrate
The insulation resistance
should be measured
with the aid of a
2500 Vdc (500 Vdc
minimum) insulation
resistance tester. The
reading should be more
than 100 MΩ.
Record all the measured
values on the Installation
Test Record provided.
2
Temperature and
moisture sensor
50 mm min.
Soil