A specification reads: 'All wiring devices shall be listed and marked with their ratings.' A device is listed by a nationally recognized testing laboratory but has no visible rating markings. Does it comply?
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A
Yes, listing alone is sufficient for compliance.
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B
No, both listing and marking are required.
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C
Yes, if the rating is in the installation manual instead.
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D
No, only devices rated above 20A need markings.