3
Heating Cable Repair
24 | nVent.com
nVent.com | 25
Use a pick to remove any flux or carbon which may
have contaminated the magnesium oxide powder at
the ends of each cable.
Figure 28: Clean face of cable
Hot-hot joint
: For two conductor cable, ensure that
the conductors are the same distance from each
other as they are in the cable.
Hot-cold joint
: For two conductor cable, conductors
from the heating cable to the cold lead should be
formed in a "Y" shape as shown in the previous step.
This will prevent the conductors in the heating cable
from shorting to the sheath.
Slide the joint over the exposed conductors,
ensuring that the fill hole faces up and is centered
over the conductor junction.
Fill hole
Figure 29: Center joint over conductors
You are now ready to braze the joint to the cable
sheath. If making a hot-cold joint, begin with the
cold lead section.