Symmetra
TM
Wiring
n All power and control wiring must be installed by a
qualified electrician only. All input, output, and
emergency power off wiring must comply with appli-
cable local and country codes.
n Use flexible metal conduit when hardwiring the Power
Array. This will provide for ease of service and main-
tenance of the system.
There are three categories of hardwiring installation proce-
dures for the Symmetra
TM
Power Array:
n Input Wiring
n Output Wiring
n Remote Emergency Power Off Switch Wiring
Input Wiring
The Power Array requires a single phase 220V, 230V, or 240V
incoming AC mains (utility) power source. Incoming power
is wired directly to a terminal block inside the Power Array.
Input wiring specifications and installation procedures are
provided.
Output Wiring
Power is distributed to the load equipment via hardwired con-
nections from an output terminal block inside the Power Ar-
ray frame and/or by plugging the load equipment into the
convenience power panel. With the PowerView user inter-
face, the Power Array can be configured to deliver either 220V,
230V, or 240V. Output wiring specifications and installation
procedures are provided.
REPO Switch Wiring
The Symmetra
TM
Power Array can be connected to either a
dry contact or a 24Vdc remote emergency power off (REPO)
switch. The wiring terminal connections for the REPO are
physically isolated from the primary circuitry of the Power
Array. Wiring specifications and installation procedures for
REPO wiring are provided.
Chapter 4 - Electrical Requirements and Procedures
4-1
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