Using circuit analyzers.
Voigtsberger
M A
MA
Skeptical Electrical, Everett, Washington, USA.
D000062:Accidents, Occupational / Q000517:prevention & control*; D004553:Electric Conductivity; D004556:Electric Injuries / Q000517:prevention & control*; D004559:Electric Wiring; D006801:Humans; D012307:Risk Factors; D017751:Safety Management