Electrical impedance

Hazards

• Opposition to alternating electric current combining resistance with frequency-dependent reactance.

Controls

• Include cable, source, load, frequency, and fault-loop behavior when evaluating voltage drop or protection.

Personal protective equipment

• Select task-specific PPE only after hazards and higher-order controls have been evaluated.

Regional considerations

• Applicable law, permits, collective agreements, venue rules, and qualified-person decisions take precedence.

In practice

Include cable, source, load, frequency, and fault-loop behavior when evaluating voltage drop or protection.

Explore related entries

• Electrical resistance
• Electric power