Owners manual

Installation
Emerson
®
MPH2
™
14
2.3.2 Safety Earth Ground Connection
Ensure that the safety earth connection is made before any equipment is connected to Emerson’s
MPH2 rack PDU. Units with factory-attached input power cords have an internal grounding
conductor. The ground wire establishes the same ground reference between the MPH2 rack PDU and
the rack. The ground-wire and hardware are available as an option from Emerson.
1. Insert a spring nut into the rack frame near the grounding point on the MPH2 (see Figure 10 for
inserting the spring nut).
2. Attach a ground wire to the rack with a screw, washer and lock washer. The screw is secured to
the rack’s frame with a spring nut. The ground wire and hardware are available as an option from
Emerson.
3. Use a second field-supplied screw, washer and lock washer to secure the ground wire to the
MPH2. The connection point is marked with an earth-ground symbol (see Figure 12).
Figure 12 Earth-ground connection
NOTE
The grounding strap may be used with MPH2 rack PDU’s that have integral input power cords
and units that have hard-wired input power cords. The strap supplements the internal
grounding conductor of the integral power supply cord.
The grounding strap may be particularly useful when the rack is on a raised floor.
A
L1
OFF
20
ON
Ground wire connection
on the MPH2 Rack PDU
(location may vary)
Ground Wire
Ground Wire
Connection Screw
M6 x 12
Washer
Ground wire connection
on an Emerson rack
Ground wire
connection on the
MPH2 Rack PDU
(location may vary)
Lock Washer
COMPLETED GROUND WIRE CONNECTION
Ground wire and hardware
are available as an option
from Emerson.