Test Report

Report Reference No.: 50337286 001
UL 1012
Clause
Requirement – Test
Result – Remark
Verdict
Page 27 of 75
a) The circuit has no electrical connection, including a solidly
connected grounded circuit conductor, to supply conductors
originating in another wiring system;
N/A
b) The circuit is rated50 - 600 volts; and
N/A
c) The circuit is as described in (1) - (3). See requirements for
Alternating-Current Circuits and Systems to Be Grounded in the
National Electrical Code, ANSI/NFPA 70, for other circuits:
N/A
1) A circuit that is grounded so that the maximum voltage to
ground on the ungrounded conductors does not exceed 150
volts. This requires that one conductor of each of the following
circuits be grounded:
N/A
i) 120 volts, 2-wire;
N/A
ii) 240/120 volts, single-phase, 3-wire;
N/A
iii) 208/120 volts, two-phase, 3-wire;
N/A
iv) 208/120 volts, three-phase, 4-wire.
N/A
2) A circuit nominally rated 480wye/277 volts, 3-phase, 4-wire
in which the neutral is used as a circuit conductor.
N/A
3) A circuit-nominally rated 240/120 volts, 3-phase, 4-wire in
which the midpoint of one phase is used as a circuit conductor.
N/A
For other units, an output ac power circuit complying with (a) is
able to be grounded when the construction complies with the
requirements described in 20.3 and 20.11.
N/A
20.3
With reference to 20.2, the conductor to be grounded shall be
as follows:
Not fixed units and of units
having standard
configuration grounding
type receptacles for the
output ac power
connections.
N/A
a) Single-phase ac system, 2-wire - one conductor.
N/A
b) Single-phase ac system, 3-wire - the neutral conductor.
N/A
c) Multiphase ac system having one wire common to all
phases - the common conductor.
N/A
d) Multiphase ac system where one phase is used as in (b)
above - the neutral conductor.
N/A
20.4
An output dc power circuit shall be grounded when:
N/A
a) The circuit has no electrical connection, including a solidly
connected grounded circuit conductor, to supply conductors
originating in another wiring system;
N/A
b) The circuit is intended to extend to premises wiring; and
N/A
c) The circuit is as described in (1) or (2):
N/A
1) Two wire rated from 50to 300 volts.
N/A
2) Three wire.
N/A
20.5
With reference to 20.4, the conductor to be grounded shall be
as follows:
N/A
a) Two wire dc system - one conductor.
N/A
b) Three wire dc system - the neutral conductor.
N/A
20.6
An output ac power circuit rated less than 50 volts shall be
grounded when:
N/A
a) The circuit has no electrical connection, including a solidly
connected grounded circuit conductor, to supply conductors
originating in another wiring system;
N/A
b) The circuit is intended to extend to premises wiring; and
N/A
c) The circuit is supplied by a transformer where the
transformer primary circuit:
N/A
1) Exceeds 150volts to ground; or
N/A