Test Report

Report Reference No.: 50337286 001
UL 1012
Clause
Requirement – Test
Result – Remark
Verdict
Page 36 of 75
27
Resistors
N/A
27.1
The assembly of a power resistor such as a wire-wound type
requiring a separate support shall be prevented from loosening
or rotating by means other than friction between surfaces.
No such resistors
N/A
27.2
An assembly employing lock washers may be considered to
comply with the requirement in 27.1.
N/A
28
Switches and Controls
No switch
N/A
28.1
A switch or other control device shall have current and voltage
ratings not less than those of the circuit that it controls when the
power unit is operated in its intended manner.
N/A
Exception: A switch or other control device not having an
inductive rating that is connected in a transformer secondary
circuit of50 volts rms or less and that complies with the
requirements for Overload of Switches and Controls,
Section 48, need not comply with this requirement.
N/A
28.2
A primary-circuit switch that controls an inductive load having a
power factor less than 75 percent, such as a transformer or
some ballasts and that does not have an inductive rating, shall
be rated not less than twice the full-load current rating of the
load, or the switch shall be investigated for the application.
N/A
28.3
Unless acceptably rated, a switch or other device that controls
a motor and is not interlocked so that it will not break the
locked-rotor motor current shall be subjected to the overload
test required by 48.3 and described in 48.4.
No motor
N/A
28.4
A switch that controls a tungsten-filament lamp shall have a
tungsten-filament-lamp current rating not less than the
maximum current it will control.
Not such construction
N/A
Exception: A switch not having a tungsten-filament-lamp
current rating and rated 3 amperes or more may be used to
control a 15-watt or smaller lamp.
N/A
28.5
A fixed power unit that is intended for connection to more than
one source of supply shall be provided with one manually
operable disconnect control device (separate switch or breaker,
set of contacts, or the like) of an indicating type for each source
of supply entering the power unit that involves a risk of electric
shock or electrical energy-high current levels. If more than one
such disconnect switch or other control is provided on the
power unit, all of the following conditions shall apply:
Not such construction
N/A
a) All such devices shall be grouped together;
N/A
b) Each device shall be marked to identify its function;
N/A
c) There shall be a prominent and permanent marking with the
group of devices to indicate the switches and controls that must
be off to completely disconnect the power unit.
N/A
Exception: A clock or timing device on or remote from the
power unit may remain energized if there is a marking
indicating that the clock remains energized while the power unit
is off.
N/A
28.6
Both the "on" and "off" positions of the disconnect control
devices mentioned in 28.5 and of the main disconnect switch
on portable or stationary equipment, if provided, are to be
marked with the words "ON" and "OFF." The symbols
illustrated in Figure 28.1 may be used for this purpose.
Identification by illumination only is not acceptable.
Not such construction
N/A