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Chapter 2. Installation
Power Connection
Power is supplied to the ESU 120e through a IEC-type power con-
nector on the rear of the unit.
GROUND ING INSTRUCTIONS
Grounding instruction information from the Underwriters' Labora-
tory UL 1950 3rd Edition is provided in this section.
An equipment grounding conductor that is not smaller in size than
the ungrounded branch-circuit supply conductors is to be installed
as part of the circuit that supplies the product or system. Bare, cov-
ered, or insulated grounding conductors are acceptable. Individu-
ally covered or insulated equipment grounding conductors shall
have a continuous outer finish that is either green, or green with
one or more yellow stripes. The equipment grounding conductor is
to be connected to ground at the service equipment.
The attachment-plug receptacles in the vicinity of the product or
system are all to be of a grounding type, and the equipment
grounding conductors serving these receptacles are to be connected
to earth ground at the service equipment.
A supplementary equipment grounding conductor shall be
installed between the product or system and ground that is in addi-
tion to the equipment grounding conductor in the power supply
cord.
The supplementary equipment grounding conductor shall not be
smaller in size than the ungrounded branch-circuit supply conduc-
tors. The supplementary equipment grounding conductor shall be
connected to the product at the terminal provided, and shall be
connected to ground in a manner that will retain the ground con-
nection when the product is unplugged from the receptacle. The
connection to ground of the supplementary equipment grounding
conductor shall be in compliance with the rules for terminating
bonding jumpers at Part K or Article 250 of the National Electrical
2-2
Power to the ESU 120e must be from a grounded 90-240 VAC,
50/60Hz source.
ESU 120e User Manual
61200420L1-1
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