Welding transformer operation under load:
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Air compressor turn on, turn off
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Automatic telephone switch
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Generator, work, jamming, start
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Grind metal on a grinding machine in a
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Turning on, Welding transformer, working,
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Automatic folder
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Welding transformer operation under load
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Grind wood with a grinder, noise in
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Forklift, off, standby, on
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Stitching machine
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Electric welding
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Factory work, general noise
★★★★★