Chapter 2: Beginning the Installation
55
An appropriate disconnect device must be provided as part of the
building or enclosure installation.
Use a UL-listed DC power supply having 48VDC/10A output and
being suitable for the maximum operating altitude of 3,000 m and
the maximum ambient temperature of the switch’s location.
This equipment must be earthed. The ground screw on the unit must
be connected to a properly earthed bonding point. E120
Ground resistance from the building primary bonding point to earth
should be less than 5 ohms.
Air flow around the unit and through the cooling fins must not be
restricted. E20
All Countries: Install product in accordance with local and National
Electrical Codes. E8
Only trained and qualified personnel are allowed to install or replace
this equipment. E14
Circuit Overloading: Consideration should be given to the
connection of the equipment to the supply circuit and the effect that
overloading of circuits might have on overcurrent protection and
supply wiring. Appropriate consideration of equipment nameplate
ratings should be used when addressing this concern. E21
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