External Backup Battery Installation - iPECS eMG80 Installation Manual

iPECS eMG80
Hardware Description and Installation Manual
to earth in a manner that will retain the earth connection when the power supply cord
is unplugged. The connection to earth of the supplementary earthing conductor shall
be in compliance with the appropriate rules for terminating bonding jumpers in Part K
of Article 250 of the National Electrical Code, ANSI/NFPA 70 and Article 10 of Part 1
of the Canadian Electrical Code, Part 1, C22.1. Termination of the supplementary
earthing conductor is permitted to be made to building steel, to a metal electrical
raceway system, or to any earthed item that is permanently and reliably connected to
the electrical service equipment earthed.

Bare, covered, or insulated earthing conductors are acceptable. A covered or
insulated conductor must have a continuous outer finish that is either green, or green
with one or more yellow stripes.

The separate protective earthing terminal provided on this product shall be
permanently connected to earth.

6.3 External Backup Battery Installation

In case of power failure, the external backup batteries automatically maintain uninterrupted
power to the iPECS eMG80 System. The external batteries must provide 24V DC; this is
generally accomplished by connecting two 12V batteries in a series arrangement as shown
in figure 6.3-1. It is strongly recommended that a fuse (10A@250Volts) be installed as
over-current protection. Both the KSU and EKSU should be connected to separate back-up
batteries.
Figure 6.3-1 External Backup Battery Installation
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