Electrical Safety Chapter 6 Flashcards

Questions and Answers

Class A GFCI devices may or may not trip (open) when a ground-fault in the range of ____ milliamperes occurs.

4 to 6

NEC 406.4(D)(4) requires ____ protection where replacements are made at receptacle outlets that are required to be so protected elsewhere in the Code.

AFCI

GFCI protection is required for which of the following?

A receptacle in a living room

A receptacle installed within 6 feet of a wet-bar sink (correct)

A receptacle in a bedroom

A receptacle in a garage

When an existing two-wire, nongrounding-type receptacle is replaced in a location where the Code requires a GFCI receptacle, it is permitted to be replaced by ____.

a GFCI-type receptacle Signup and view all the answers

GFCI protection is not required for ____.

receptacle installed behind a range or refrigerator Signup and view all the answers

As defined in NEC Article 100, a(n) ____ is a point on the wiring system at which current is taken to supply utilization equipment.

outlet Signup and view all the answers

A single receptacle for one appliance or a duplex receptacle for two appliances located within dedicated space require tamper-resistant receptacles.

False Signup and view all the answers

A GFCI for personnel protection operates when it senses a current imbalance between mA and mA.

4, 6 Signup and view all the answers

When a conductor that is carrying current breaks or when a loose connection occurs, a(n) '______________' arcing fault is created.

series Signup and view all the answers

Match the outlets with the type of protection required.

Bedroom receptacle outlet = AFCI Bathroom receptacle outlet = AFCI Garage receptacle outlet = No protection required Kitchen lighting outlet = B Hallway lighting outlet = A Kitchen counter receptacle outlet = A Unfinished basement receptacle outlet = A Signup and view all the answers

Why were immersion detection circuit interrupters (IDCIs) and appliance leakage current interrupters (ALCIs) introduced in older homes?

Because older homes probably do not have GFCI receptacles in bathrooms, immersion detection circuit interrupters (IDCIs) and appliance leakage current interrupters (ALCIs) were introduced to provide people with shock protection. Signup and view all the answers

Name two different types of GFCI construction.

Two different types of GFCI construction are circuit-breakers and receptacles. Signup and view all the answers

What would happen if fire and smoke alarms were connected to a circuit that is protected by a GFCI breaker?

A nuisance tripping of the GFCI would render the fire alarm and smoke detectors inoperative. Signup and view all the answers

UL requires that the instructions furnished with GFCIs be marked and that testing be performed upon installation and at least ____________________ each month as well as after severe lightning storms.

once Signup and view all the answers

If you take over a room that qualifies as a bedroom for use as a home office, the inspector is likely to require ____ protection of the room.

AFCI Signup and view all the answers

What models of GFCI testers are available on the market?

Many models of GFCI testers are available on the market. They range from a simple plug-in tester with a push-to-test button to sophisticated branch circuit analyzers. Signup and view all the answers

Briefly explain GFCI and AFCI protection requirements for outdoor receptacles and lighting.

Outdoor receptacle(s) require GFCI protection, but not AFCI protection. Outdoor lighting is not required to have AFCI protection but such protection is permitted. Signup and view all the answers

Study Notes

GFCI and Receptacle Requirements

Class A GFCI devices trip at ground-faults between 4 to 6 milliamperes.
NEC 406.4(D)(4) mandates AFCI protection during receptacle replacements when specified by the Code.
GFCI protection is necessary for receptacles located within 6 feet of wet-bar sinks.

Replacement and Protection Guidelines

An existing two-wire, non-grounding receptacle can be replaced by a GFCI-type receptacle when required by Code.
GFCI protection is exempt for receptacles placed behind ranges or refrigerators.
An "outlet" is defined as a point in the wiring system where current is drawn to supply equipment.

Appliance Connections Management

Single or duplex receptacles in fixed, dedicated spaces for appliances do not require tamper-resistant designs.
GFCI for personnel protection activates upon detecting a current imbalance of 4 to 6 mA.

Fault Types and Required Protections

Series arcing faults occur when a current-carrying conductor breaks or has a loose connection.
Outlet protection classification:
- GFCI: Bathroom and garage receptacles, kitchen counter receptacles, unfinished basement outlets.
- AFCI: Bedroom and hallway lighting outlets.
- No protection: Kitchen lighting outlets.

Historical Context and Types of GFCIs

IDCIs and ALCIs were introduced in older homes lacking GFCI protection, offering shock safety.
GFCI construction types include circuit breakers and receptacles.

System Interactions and Testing Protocols

GFCI breakers protecting fire and smoke alarms may cause nuisance tripping, rendering alarms inoperative.
UL standards require GFCIs to have marked instructions and mandates monthly testing, plus checks after severe storms.

Home Office Regulations

Conversion of a bedroom to a home office typically triggers an AFCI requirement for the space.

GFCI Testing Equipment

A variety of GFCI testers are available, from simple plug-in units with push-to-test features to advanced branch circuit analyzers.

Outdoor Protection Standards

Outdoor receptacles must have GFCI protection but are not mandated to require AFCI protection; however, AFCI protection for outdoor lighting is permitted.

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Description

Test your knowledge on electrical safety standards with these flashcards from Chapter 6. Covering essential topics like GFCI devices and AFCI protection, this quiz is perfect for anyone preparing for their EO test. Expand your understanding of the NEC Code requirements.