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∆
The lower end of the HVSC Plus downconductor must terminate close to the initial injection
point of the lightning earth
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Be sure to allow for enough slack in the HVSC Plus at the top end for connection to the
Guardian Plus terminal and the raising of the mast
∆
If it is necessary to isolate the HVSC Plus downconductor from the structure, run the cable
in an insulating conduit with a minimum wall thickness of 3 mm (1/8"). The maximum
length isolated from the structure should be 2.5 m (9 ft). The entire length of the HVSC Plus
downconductor cannot be run in insulated conduit
∆
The HVSC Plus downconductor should be protected from damage at the lower end by
installing a "Top Hat" surface mount cover of no more than 2 m from ground level
∆
The HVSC Plus downconductor must be checked by an LPI representative if it is damaged
during installation to see if the damage will affect performance
Fixing the HVSC Plus Downconductor
Using non-LPI fastening saddles can damage the downconductor outer sheath. Always use LPI-
supplied or recommended saddles, fixing and cable ties.
∆
The HVSC Plus downconductor should be fixed to the structure every 2 m for the entire
length of the run
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For masonry walls or roofs, use the LPI saddles provided. These can be used with masonry
anchors, suitable fastenings for wood, fibreglass and metallic surfaces, or self-tapping
screws
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The most direct path to ground is recommended. Avoid sharp bends (see Figure 9)
∆
Use cable ties when fixing to round sections, such as pipes, tower legs, masts, etc.
∆
If the HVSC Plus downconductor is to be routed above a false ceiling, ensure that it is fixed
to the underside of the concrete floor slab
∆
Do not use explosive fastening methods on LPI saddles or HVSC Plus downconductors
Installation of Conventional Downconductors
In some installations, the use of copper tape or insulated stranded copper conductor may
be installed as the downconductor. In such cases, it may be necessary to install multiple
downconductors in compliance with local and/or international standards, such as NF C 17-102,
AS 1768, NFPA 780 and IEC 62305. The following dot points provide further information.
∆
The Guardian Plus terminal provides a bolt for the lug connection to the lower finial
www.lpi.com.au
LIGHTNING PROTECTION INTERNATIONAL PTY LTD
19
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