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ManualsBrandsAoibox ManualsFans24 in. Black High-Velocity Industrial 3-Speed Ventilation Metal Wall Mount Fan for Warehouse Workshop Factory

Page 90 of 104 Report No.: HK2107050725-SR

UL 507

Clause Requirement + Test Result - Remark Verdict

TRF No. UL507A

76.9 During the test, the primary switch is to be in the

"on" position, both sides of the primary circuit of the

appliance are to be connected together and to one

terminal of the test equipment, and the second

test- equipment terminal is to be connected to the

accessible dead metal.

77 Grounding Continuity Test P

77.1 Each appliance that has a power-supply cord

having a grounding conductor shall be tested to

determine the grounding continuity between the

grounding blade of the attachment plug and the

accessible dead metal parts of the appliance that

are capable of becoming energized.

77.2 Only a single test is required to be conducted when

the accessible metal selected is conductively

connected by design to all other accessible metal.

77.3 Any indicating device, such as an ohmmeter, a

battery and buzzer combination, or the like, is to be

used to determine compliance with the grounding-

continuity requirement in 77.1.

78 Polarization Test N/A

78.1 As a routine production-line test, each appliance

provided with a manually operated, line-

connected, single-pole switch for appliance "on-off"

operation; an Edison-base lampholder or an

Edison- base fuseholder; or a receptacle shall be

tested for electrical continuity between the

grounded supply circuit conductor of the

attachment plug (wide blade of 2-wire plug) and the

part of the appliance that is intended to be

connected to the grounded supply circuit conductor

of the attachment plug. The polarity shall be

determined either visually or through the use of an

electrical test. Equivalently, polarity may be verified

between the ungrounded supply circuit conductor

of the attachment plug and the part of the

appliance that is intended to be connected to the

ungrounded conductor.

N/A

78.2 Any indicating device, such as an ohmmeter, a

battery and buzzer combination, or the like, is to be

used to determine compliance with the requirement

in 78.1.

N/A

79 Details N/A