• It is important to consider dissimilar
metals. For example, do not install copper
cable on zinc-plated roof.
• The conventional conductor shall not lie in
the standing water.
• The conductor has to follow the path
to ground in a downward fashion. For
example the conductor cannot go from
the roof level over the parapet wall up the
hill. A hole should be drilled through the
parapet wall. If that is not possible the
conductor may go over the parapet wall
in the maximum slope of
0
.
305
m (
1
in.)
over
0
.
915
m (
3
in.) of distance.
• IEC standards do allow use of composite
conductors. nVent ERICO does not offer
products that connect the Dynasphere
to composite conductors, and is not
presently recommended.
• The NFPA
780
standard allows the use
of copper or aluminum conductors only.
Composite conductors may not be used
in applications compliant to NFPA
780
.
Figure
25
: Lug coupling for non-Ericore downconductors
Using the Mast as a Downconductor
• A stainless steel mast system is the
preferred method recommended by nVent
ERICO for installation of the System
3000
with conventional conductor.
• nVent ERICO offers two types of stainless
steel masts in both cantilevered and
guyed configurations. The SIM and ER
series of masts vary in mast height from
4
m (
157
in.) to
8
m (
315
in.). Each mast
configuration is comprised of multiple
mast sections, accessories, and adaptors
to attain the designed overall height.
Special adaptor part numbers may be
ordered to connect the Dynasphere to the
different mast sections.
• nVent ERICO also allows the use of a
water pipe with UNC or British threads,
using special couplers manufactured by
nVent ERICO to support the Dynasphere.
The downconductor is connected to
the pipe using a Cadweld exothermic
connection. These applications are used
Lock Screw
Lug Coupling
M
10
Bolt
Lightning Protection
Terminal Base
50
mm
2
(
1
/
0
AWG)/
70
mm
2
(
2
/
0
AWG)
minimum
downconductor
(or as per local
standards)
Aluminum
Mast
LPC
126
R
Copper Cable
LPC
126
R
Copper Cable
LPC
502
Copper
Parallel Cable
Connector
