Installing A Lightning Arrestor; Lightning Arrestor Installation Notes - Cisco Catalyst IW9167E Hardware Installation Manual

Heavy duty access point

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Installation Overview

Installing a Lightning Arrestor

Overvoltage transients can be created through lightning static discharges, switch processes, direct contact

with power lines, or through earth currents. The Lightning Arrestor limits the amplitude and duration of

disturbing interference voltages and improves the over voltage resistance of in-line equipment, systems, and

components. A lightning arrestor installed according to these mounting instructions balances the voltage

potential, thus preventing inductive interference to parallel signal lines within the protected system.

Installation Considerations

Cisco recommends that you bulkhead mount the lightning arrestor so it can be installed as a wall-feed through

on the wall of the protected space.

The importance of obtaining a good ground and bonding connection cannot be overstressed. Consider these

points when grounding the lightning arrestor:

• Connect the lightning arrestor components directly to the grounding point.

• The contact points of the ground connection must be clean and free of dust and moisture.

• Tighten threaded contacts to the torque specified by the manufacturer.

This lightning arrestor is designed to be installed between the antenna cable that is attached to an outdoor

antenna and the Cisco wireless device. You can install the lightning arrestor either indoors or outdoors. It can

be connected directly to a wireless device having an external N connector. It can also be mounted inline or

as a feed-through. Feed-through installations require 5/8 in. (16 mm) hole to accommodate the lightning

arrestor.

Note

Installing the Lightning Arrestor Outdoors

If you install the lightning arrestor outdoors, use the supplied ground lug and a heavy wire (#6 solid copper)

to connect it to a good earth ground, such as a ground rod. The connection should be as short as possible.

• This lightning arrestor is part of a lightning arrestor kit. The kit contains a lightning arrestor and a

grounding lug.

• When you install the lightning arrestor, follow the regulations or best practices applicable to lightning

protection installation in your local area.

Cisco Catalyst IW9167E Heavy Duty Access Point Hardware Installation Guide

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