Safety Earth Ground Connection; Figure 12 Earth-Ground Connection - Emerson Network Poewr MPH2 User Manual

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.
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.
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

Figure 12 Earth-ground connection

Washer
Ground Wire
Connection Screw
M6 x 12
Ground Wire
Ground wire and hardware
are available as an option
from Emerson.
Ground wire
connection on the
MPH2 Rack PDU
(location may vary)
® ™
Emerson MPH2
Lock Washer
COMPLETED GROUND WIRE CONNECTION
14
Installation
(see Figure 12).
Ground wire connection
on the MPH2 Rack PDU
(location may vary)
A
L1
Ground wire connection
on an Emerson rack