Vertiv
| Liebert
®
RX
™
Remote Distribution Cabinet User Manual |
15
1.7
Output Power Connections
An output panelboard with ground and neutral provisions is provided inside the unit for
connecting load(s) as required. (See
Figures 4
,
5
and
6
).
Flexible output distribution cables are used in data processing areas under a raised floor. Cable
lengths and layout should be well planned:
•
Cable routes should follow aisles between equipment. This will facilitate access to cables for installation,
routine inspection and future changes.
•
Determine the required cable length by measuring the distance to the load equipment following right-
angle paths, rather than diagonally or directly. Always measure to the extreme far side of the equipment
with respect to the unit to insure adequate cable length.
•
Prevent restriction of airflow under the raised floor by running the flexible conduits flat on the sub-floor,
in parallel paths.
•
Initial system output loading should be between 50% and 75% of rated capacity. This allows the addition
of future loads without immediately investing in another Liebert RX.
•
Balancing of loads is good design practice on any 3-phase system.
•
All output cables and connections must comply with the NEC and all other applicable codes.
•
All output cables without receptacles that are hard-wired to the load equipment must be equipped with a
padlock-off accessory for the output circuit breaker. The padlock-off accessory is used to lock out and
tag the circuit breaker while service is performed on the hard-wired load equipment in accordance with
OSHA safety rules.
WARNING
Risk of electric shock. Can cause personal injury or death.
Verify that all incoming line voltage (power) circuits are de-energized and locked out
before installing cables or making connections in the unit.
Before proceeding with installation, read all instructions, verify that all the parts are
included and check the nameplate to be sure the voltage matches available utility power.
Follow all local codes.
Summary of Contents for Liebert RX
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