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Chapter 2. Installation
2-2
TSU 120 User Manual 61202129L1-1
Power Connection
Each TSU 120 is equipped with a captive eight-foot power cord,
terminated by a three-prong plug which connects to a
grounded power receptacle.
Power to the TSU 120 must be from a grounded 90-120 VAC, 50/
60 Hz source.
GROUNDING INSTRUCTIONS
Grounding instruction information from the Underwriters' Lab-
oratory 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 sys-
tem. Bare, covered, or insulated grounding conductors are
acceptable. Individually 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 con-
nected 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
addition 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
conductors. The supplementary equipment grounding con-
ductor shall be connected to the product at the terminal pro-
vided, and shall be connected to ground in a manner that will
retain the ground connection when the product is unplugged
from the receptacle. The connection to ground of the supple-