Open Circuit Voltage (OCV) - Some processes may utilize open circuit voltages as high as 400 volts dc Welding Terminals - Shall be protected from accidental electrical contact Dead front construction - utilizing receptacles for plug connections, by locating terminals in a recessed opening or under a non-removable hinged covers, by heavy insulating sleeves or by other equivalent mechanical means > 6 ma is considered primary current & harmful .5 ma is the level a tingle will be felt upon contact
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