10. Installation
CAUTION
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•
Caution for perforating the knock-out hole
Perforate a knock-out hole by punching it with a hammer
•
•
After perforating the knock-out hole, apply rust resisting paint around the hole.
When you need to pass the cables through the knock-out hole, remove burrs on the hole and
protection the cable with a protection tape or bushing etc.
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Caution for installing communication cable
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When you connect the cable, it may sag and pressed by other parts. Therefore cables should be fixed to a
clamp highlighted with a box on the illustration.
Name
Temper grade
Applicable conditions
When the protection tube
is installed indoor and not exposed to outside, because
it is embedded in concrete structure
Flexible PVC
conduit
PVC
When the protection tube is installed indoor but
exposed to outside so there are risk of damage to
the protection tube
Class 1 flexible
Galvanized
conduit
steel sheet
When the protection tube is installed outdoor and
exposed to outside so there are risk of damage to the
protection tube and extra waterproof is needed
Class 1 PVC
Galvanized
coated flexible
steel sheet
conduit
and Soft PVC
compound
Path for arranging external
communication cable
Fixing location of the external communication
cable
Specification of the protection tube
