The Basic lessons · Station assembly, practice and safety · B-003-018

Securing Your Station and Avoiding Electrical Hazards

Learn how to physically lock out unauthorized users from your home and mobile radio stations. Understand the specific electrical dangers of high voltage, vehicle batteries, and the tiny currents that can stop a human heart.

This lesson is part of SignalPrep Pro. The subsection's 11 exam questions are free to practise: practise B-003-018.

What this subsection asks

• How could you best keep unauthorized persons from using your station at home?
• How could you best keep unauthorized persons from using a mobile station in your car?
• What electrical hazard, if any, does the starter battery in a vehicle present?
• Why would there be a switch in a high-voltage power supply to turn off the power if its cabinet is opened?
• What is the minimum electrical current that can be fatal to the human body?
• Which body organ can be fatally affected by a very small amount of electrical current?
• What is the lowest voltage that is usually considered hazardous to humans?
• What should you do if you discover someone who is being burned by high voltage?
• What is the safest method to remove an unconscious person from contact with a high-voltage source?
• Before checking a fault in a mains-operated power supply unit, it would be safest to first:
• What is the risk involved in troubleshooting a live power supply?