Questions and Answers
NFPA 70E was originally developed at OSHA's request to address _______.
electrical hazards in the workplace
To verify an electrically safe work condition, all these conditions should be confirmed EXCEPT:
Effective training of employees includes all of the following EXCEPT:
What type of burns are the result of current flowing through and exiting the body?
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On circuits above _____, all exposed metal parts of portable control devices should be grounded by a grounding conductor in the control cable.
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All of the following are essential considerations for the safe use of cords and wiring EXCEPT:
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What do tripped circuit breakers and blown fuses indicate?
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When does electricity become hazardous to humans?
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Which one of these additional methods MOST effectively protects machines, tools, and operators against damage from electrical current?
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Which one of these methods is not acceptable for putting out an electrical fire?
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Study Notes
NFPA 70E and Electrical Hazards
- NFPA 70E was created in response to OSHA's request to address workplace electrical hazards.
Confirming Electrically Safe Work Conditions
- Essential conditions for verifying electrical safety include the presence or absence of voltage, identifying sources of electrical supply, and grounding phase conductors.
- Disconnecting devices must be open to ensure a safe work environment, contrary to being closed.
Employee Training in Electrical Safety
- Effective employee training covers de-energizing equipment, maintaining cords, cables, and tools, and following lockout/tagout procedures.
- Operating power tools in wet conditions is unsafe and therefore not included in safe training practices.
Electrical Burns
- Electrical burns occur when current flows through and exits the body.
Grounding Requirements
- For circuits exceeding 50 volts, all exposed metal parts of portable control devices must be grounded.
Safe Use of Cords and Wiring
- Safe practices for cords and wiring exclude the use of two-wire type cords, which are deemed unsafe.
Circuit Breakers and Fuses
- Tripped circuit breakers and blown fuses indicate an overload of current in the circuit.
Hazardous Electricity
- Electricity becomes dangerous to humans when it completes a circuit through the body.
Protecting Machines and Operators
- Service and equipment grounding provides effective protection against electrical current for machines, tools, and operators.
Electrical Fire Safety
- Water is not an acceptable method for extinguishing electrical fires, as it can exacerbate the situation.
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Description
Test your knowledge on electrical safety standards and practices with this quiz based on Module 5. Review key concepts such as NFPA 70E and the verification of electrically safe work conditions. Perfect for ensuring workplace safety and compliance.
