• Where isolation of the downconductor is
required (for physical or proximity safety
reasons) install the cable in a suitable
insulating conduit with a minimum wall
thickness of
3 mm (⅛ in.).
NOTE: This is the only time that the
downconductor should be isolated from
the structure and generally only for
2
m
(
6
ft.) maximum.
DO NOT route the entire length of
downconductor in insulated conduit.
Conduit made from ferro-magnetic
material must not be used.
• Ensure that a minimum bend radius of
>
500
mm (
20
in.) is maintained.
• Parallel routing with other services -
Minimum separation =
2
m (
80
in.).
Try to isolate as much as possible from
other services.
• If the downconductor must cross other
services, ensure that it crosses at right
angles to minimize any inductive effect.
• The lower end of the Ericore cable must
terminate to a grounding system.
• Allow
500
mm (
20
in.) of slack in the
length of downconductor at the upper
end of the cable to facilitate mast erection
and correct seating of the nVent ERICO
Dynasphere terminal in the top of the
FRP mast.
Figure
9
: Correct & incorrect cable routing
CORRECT
INCORRECT
COMMUNICA
TIONS / POWER
Radius <
500
mm (
20
in.)
Radius <
500
mm (
20
in.)
2
m Max
(
80
in.)
<
2000
mm
(
80
in.)
<
2000
mm
(
80
in.)