309180
11
Electrical Setup
WARNING
FIRE, EXPLOSION, AND ELECTRIC
SHOCK HAZARD
To reduce the risk of fire, explosion, or
electric shock:
D
The unit must be grounded to either
the building ground or a true earth
ground. The power source conduit is
not an adequate ground for the sys-
tem.
D
A qualified electrician must complete
all grounding and wiring connections
and check the resistance.
D
Refer to your local code for the requirements for
a “true earth ground” in your area.
3.
Open electrical enclosure door and locate main
disconnect (Fig. 9).
Fig. 9
PH00018
4.
Have a qualified electrician connect your plant
power to the control box disconnect switch accord-
ing to local codes. A 1–3/8” (35 mm) diameter
opening is provided on top of the box, above the
connections. This opening is suitable for a 1” npt
conduit or strain relief fitting (Fig. 10).
Fig. 10
PH00031
NOTE:
Detailed information about checking for proper
grounding and heater resistance is provided in manual
309085.
