User Guide

Table Of Contents
PMP 450 Planning Guide
Grounding and lightning protection
This section describes the grounding and lightning protection requirements of a PMP 450 installation.
Electro-magnetic discharge (lightning) damage is not covered under warranty. The recommendations in this
guide, when followed correctly, give the user the best protection from the harmful effects of EMD. However
100% protection is neither implied nor possible.
The need for power surge protection
Structures, equipment and people must be protected against power surges (typically caused by lightning) by
conducting the surge current to ground via a separate preferential solid path. The actual degree of protection
required depends on local conditions and applicable local regulations. Cambium recommends that PMP 450
installation is contracted to a professional installer.
Standards
Full details of lightning protection methods and requirements can be found in the international standards IEC
61024-1 and IEC 61312-1, the U.S. National Electric Code ANSI/NFPA No. 70-1984 or section 54 of the
Canadian Electric Code.
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pmp-0047 (March 2014)