Installation Guide

Installing the EPS-150DC Power Supply
Note
Install the EPS-T2 before you begin installing the EPS-150DC.
Warning
Always be sure that the DC circuit is de-energized before connecting or disconnecting the DC
wiring harness at the DC power socket on the rear of the EPS-150DC unit, and before
connecting or disconnecting the redundant power cord between the switch and the
EPS-150DC unit.
To install an EPS-150DC unit, perform the following tasks in order:
1. Connecting the DC Wiring Harness to the DC Source Voltage on page 367
This task must be performed by a licensed, qualified electrician.
2. Installing an EPS-150DC Unit into an EPS-T2 on page 368
3. Connecting the DC Wiring Harness to the DC Power Socket on the EPS-150DC on page 368
4. Connecting the EPS-150DC to a Switch on page 369
Connecting the DC Wiring Harness to the DC Source Voltage
A three-wire, 6-foot long DC wiring harness (shown in Figure 296 on page 368) is included with the
EPS-150DC unit. The DC wiring harness must be properly connected to the DC source voltage at your
facility by a qualified electrician before the connector on the wiring harness can be attached to the DC
power supply socket on the rear of the unit. See Technical Specifications on page 523 for information
about connector pinouts and for DC power specifications to be used in connecting the wiring harness to
the DC source voltage.
Warning
Wiring the EPS-150DC DC wiring harness to your facility's DC source voltage must be
performed by a qualified, licensed electrician. After the wiring harness is connected to a
permanent DC voltage source by a qualified, licensed electrician, you can remove, replace and
maintain the ESP-150DC without further electrician assistance. However, always be sure that
the DC circuit is de-energized before connecting or disconnecting the DC power connection
at the rear of the EPS-150DC unit.
Caution
The DC wiring harness must be properly connected to a DC main circuit breaker or fuse rated
no greater than 20 A.
Provide proper connection and strain relief on the DC wiring harness in accordance with all
local and national electrical codes.
Installing External Power Supplies Installing the EPS-150DC Power Supply
Summit Family Hardware Installation Guide 367