Practice question

A crane will operate near an overhead power line and the voltage is not yet known. Under OSHA 1926.1408, which approach is acceptable?

Assume any clearance is fine if the operator has 10 years of experience
De-energize and ground the line, or keep the equipment, load line, and load at least 20 feet away until voltage is identified and Table A or another permitted option is used
Use a 3-foot clearance because boom trucks are exempt
Touch the line briefly with a tag line to test whether it is energized

Answer: B — De-energize and ground the line, or keep the equipment, load line, and load at least 20 feet away until voltage is identified and Table A or another permitted option is used

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