After routing the downconductor, it
must be kept in constant physical
contact with the structure via conductive
fixings as follows:
For the top
10
% of the downconductor:
• The downconductor from the terminal
must be secured at least every
1
m (
40
in.). This includes metallic
mast sections.
• Installing the downconductor through
ferromagnetic raceways, pipes, and
conduits is not recommended.
For the lower
90
% of the downconductor:
• The downconductor must be secured
at least every
2
m (
80
in.). This includes
routing inside any type of pipe or conduit.
• The length of the downconductor through
non-ferromagnetic raceways, pipes, and
conduits should not exceed
2
m (
80
in).
• Installing the downconductor through
ferromagnetic raceways, pipes, and
conduits is not recommended.
When using metallic lower sections
of mast (i.e.: aluminum), then the
downconductor MUST be secured with
nVent ERICO brand of saddles to the mast at
1
m (
40
in.) intervals (max.). The mast in turn
must be electrically bonded to the nearest
conductive structural point. In this case, the
structure bonding braid must connect to the
inline coupling (see Fig.
13
).
Figure
13
: Connection of structure bonding braid in
FRP and metallic masts
The
6
mm
2
(
8
AWG) copper cable used to
connect the structure bonding braid to the
structure must be one continuous length.
Joints in this cable would represent a
potential maintenance issue.
Any metallic surfaces that the
downconductor may be secured to, if
possible, should be electrically connected to
the structural steel work.
Removable gin pole
and associated rigging
Secure guying
Beware of any overhead power lines or other obstructions
Ensure the base will
not slip during the lift
Protect the ERITECH
®
ERICORE from abrasion
during the lift
Attach structure
bonding braid
Aluminum
Mast
Grounding
Braid
Connection
Ericore
To nearest conductive
structural point
(steel work, concrete
re-inforcing, etc)
Stainless
steel cable
tie
1
m
(
40
in
interval max)