Fixing Of The Hvsc Downconductor; Installation Of Conventional Downconductors - Lightning Protection International Guardian System 5 Installation Manual

Fixing of the HVSC Downconductor

Using non LPI saddles can damage the downconductor outer sheath.
• The HVSC downconductor should be fixed to the structure every 2m for the entire length of
the run.
• 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.
• Use cable ties when fixing to round sections, such as pipes, tower legs, masts, etc.
• If the HVSC 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 downconductors.

Installation of Conventional Downconductors

In some installations the use of copper tape or insulated stranded copper cable may be installed
as the downconductor. In such cases it may be necessary to install multiple downconductors
in compliance with local standards and/or international standards. (NFC 17-102, AS1768-2007,
BS6651, IEC 62305). See the following dot points for further information.
The Guardian CAT Terminal provides a bolt for the lug connection to the lower finial connector
of the mast butt adaptor. All conventional downconductors should be lugged and fixed to the
terminal as per figure 13.
The following are recommendations and points that should be considered when installing
conventional downconductors.
• Downconductors should be installed at each external corner of the building and additional
downconductors installed at spacing not exceeding 20m.
• The most direct path to ground is recommended, avoiding sharp bends.
• Downconductors should be installed around the outside walls of the structure. It is not
recommended to install downconductors internally to the structure.
• It is not recommended to locate downconductors in areas where personnel are liable to
congregate.
20
Guardian Install Manual V12.indd 22
Document 36 II Guardian Version 1.02 © Copyright 2008 LPI
22/9/08 4:25:24 PM