#1
What does the term 'grounding' refer to in electrical safety?
Providing a connection to the earth
ExplanationGrounding ensures excess electricity flows harmlessly into the earth.
#2
Which color is typically used for the 'ground' wire in electrical wiring?
Green or bare copper
ExplanationGreen or bare copper wires denote grounding in electrical systems.
#3
What is the purpose of a circuit breaker in electrical systems?
To protect against overcurrent
ExplanationCircuit breakers prevent damage from excessive current flow.
#4
What is the minimum recommended distance to maintain between water and electrical outlets in a bathroom?
At least 3 feet (90 centimeters)
ExplanationKeeping outlets away from water sources minimizes shock risk.
#5
What is the purpose of a GFCI (Ground Fault Circuit Interrupter) in electrical circuits?
To interrupt power in case of a ground fault
ExplanationGFCIs halt power flow to prevent electric shocks in case of faults.
#6
In the context of electrical safety, what does 'ARC Flash' refer to?
A burst of light and heat caused by an electric arc
ExplanationARC flashes pose severe burns and fire risks in electrical incidents.
#7
What is the purpose of a 'lockout/tagout' procedure in electrical safety?
To isolate and de-energize equipment during maintenance
ExplanationLockout/tagout protocols prevent accidental equipment activation during servicing.
#8
What does the acronym 'PPE' stand for in the context of electrical safety?
Personal Protective Equipment
ExplanationPPE shields workers from electrical hazards during tasks.
#9
What is the purpose of insulating materials in electrical systems?
To prevent electric shock and short circuits
ExplanationInsulation blocks current flow, safeguarding against shocks and fires.
#10
What safety precautions should be taken when working with live electrical components?
Wearing gloves and safety goggles
ExplanationProtective gear shields against shocks and injuries during handling.
#11
What is the recommended maximum load capacity for a circuit with a 20-ampere breaker?
20 amperes
ExplanationAdhering to the breaker's limit ensures safe electrical load distribution.
#12
What does the term 'ampacity' refer to in electrical systems?
Current-carrying capacity of a conductor
ExplanationAmpacity denotes how much current a conductor can safely carry.