MIL-HDBK-1025/10
Table 15
Jobs Generally Acceptable for One Electrical Worker
I. Work on de-energized systems with nominal system voltages of 600 volts ac or 250 volts
dc, or less.
II. Routine electrical measurements on energized systems with nominal system voltages of 600
volts ac or 250 volts dc, or less.
III. Routine operation of metal-enclosed switchgear with nominal system voltages of 600 volts
ac or 250 volts dc, or less.
IV. Routine electrical measurements or switching using gloves and live-line tools if the worker
is positioned out of reach or possible contact with energized parts.
V. Emergency repair work to safeguard the general public, if previously authorized.
5.1.3 Verifying Electrical Systems and Equipment Provisions. Check out
the equipment needed such as insulating tools, hot sticks, and grounding cables. Have
necessary safety hazard detection devices at the work site.
Note
Be familiar with the electrical system you are working on by
reviewing the system's single line diagram.
5.1.4 Safety Hazard Detection Devices. Potential differences, induced
voltages on lines, accidental short circuiting, leakage current across insulated protective
equipment, and combustible gas accumulation can create safety hazards if not detected by
the use of proper test devices. Typical test devices include:
WARNING
Operate safety hazard detection devices according to
manufacturers' operating instructions.
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