ERICO 3000 ERITECH SYSTEM - Manual (Page 7)

INSTALLATION, OPERATION AND MAINTENANCE MANUAL
5
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Downconductors
The ERITECH ® ERICORE downconductor
or other recommended downconductor
should have been selected during the design
stage, as should the route, length and any
preterminations of the downconductor.
Re-check intended route of
downconductor immediately
prior to installation to ensure
that:
t
There are no structural changes or
additions that may effect the initial
design.
t
Most direct route possible to the
grounding system with minimal
number of bends and as flush with
the structure as possible.
t
Minimum bending radii maintained
(500 mm, 20 in.).
t
Parallel routing with other services -
minimum separation = 2 m (80 in.).
t
Attachment to the structure is at a
maximum of every 1 m (40 in.) for the top
10% of the downconductor route and
2 m (80 in.) from then on.
t
Pipe installations follow the instructions
given on page 17.
Grounding Systems
The grounding system is critical to the
integrity of any lightning protection
installation and should include
consideration of:
t
Local Standards compliance
(IEC 61024-1, BS 6551, AS1768-1991,
NFPA ® 780, C22.1-98, NEC ® etc.)
t
Available space / location.
t
Natural soil conditions - resistivity of
soil, soil moisture content, soil
temperature range, etc.
t
Location of underground services -
Power, Communications, Fuel, Gas,
Water, etc.
t
Corrosive environments, ie: salt
water, acid / alkaline contaminated
ground
mass.
t
Use of suitable grounding rods such
as ERITECH ® rods.
t
Minimization of risk to personnel.
Contact an ERICO office or Distributor if you
require further advice on grounding systems.
The recommended order of installation is as follows:
1. Full installation of the grounding system.
2. Full installation of the downconductor.
3. Termination of the downconductor to the grounding system.
4. Upper termination of the downconductor (may already have been completed
by ERICO) and connection to the ERITECH ® DYNASPHERE air terminal.
5. Termination of bonding cable from upper termination to structure
(if required).
6. Raise mast into position and secure.