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Questions and Answers
What should you do before working on any circuit or equipment?
It is safe to work alone on high voltage circuits.
False
What should be used to remove high-voltage charges on capacitors?
A shorting stick.
Class C fires involve ______.
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What type of fire requires cooling with water or smothering with a $CO_2$ extinguisher?
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Match the fire class with its extinguishing technique:
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What type of clothing should be avoided when working with electrical circuits?
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What should you do if there is a fire caused by electrical equipment?
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Study Notes
General Safety Precautions
- Always remove power from circuits and equipment before working on them.
- Never bypass safety mechanisms.
- Ensure all equipment is properly grounded.
- Exercise caution when handling batteries, especially those containing acid.
- Use cleaning fluids in well-ventilated areas.
- Dispose of flammable materials in sealed metal containers.
- Immediately de-energize and report any electrical fires.
High Voltage Safety Precautions
- Never work on high-voltage circuits alone.
- Always have a partner trained in CPR and first aid.
- Avoid contact with live circuits.
- Do not tamper with safety interlocks.
- Use an isolation transformer to protect yourself.
- Never work on equipment in the presence of water.
Personal Safety Precautions
- Work in clean and dry areas.
- Avoid loose clothing, as it can conduct electricity.
- Wear non-conductive shoes to reduce the risk of shock.
- Remove all metallic objects, including jewelry and watches.
- Use insulated tools to handle hot parts.
- Discharge capacitors using a shorting stick.
- Ensure proper grounding of test equipment.
- Disconnect power before connecting alligator clips.
- Avoid touching test probes when working on circuits with voltages above 300 volts.
Fire Safety
- Class A fires involve materials like wood, paper, and cloth.
- Use water or a carbon dioxide extinguisher for Class A fires.
- Class B fires involve flammable liquids like gasoline and kerosene.
- Smother Class B fires with foam or carbon dioxide.
- Class C fires involve electrical equipment. Cut off power and use a non-conductive dry powder or carbon dioxide extinguisher.
Electrical Shock
- Electrical shock occurs when an electric current passes through the body.
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Description
Test your knowledge on essential electrical safety precautions in this quiz. Covering general safety, high voltage safety, and personal safety measures, you'll learn how to minimize risks while working with electrical circuits and equipment. Ensure you're well-prepared for safe practices in the field!
