Journeyman Electrician’s Exam Journeyman Electrician's GFCI and AFCI Protection 3

Question 1

A GFCI receptacle with downstream outlets connected to its LOAD terminals protects those outlets because:

Accepted Answer

The GFCI monitors current imbalance between hot and neutral across the entire load circuit

Answer

The panel breaker backs up the GFCI for all downstream faults

Answer

Downstream outlets share independent ground fault sensing electronics

Answer

Only the GFCI itself is protected, not any downstream outlets

Question 2

Per NEC 210.8, GFCI protection is NOT required for which of the following receptacle installations?

Accepted Answer

A 240-volt, 30-ampere dryer receptacle

Answer

A 125-volt receptacle within 6 feet of a kitchen sink

Answer

A 125-volt outdoor receptacle at a dwelling unit

Answer

A 125-volt receptacle in an attached garage

Question 3

When an AFCI circuit breaker cannot be installed at the panel, what alternative does NEC 210.12 permit to satisfy the AFCI requirement?

Accepted Answer

A listed AFCI outlet device installed at the first outlet of the branch circuit

Answer

A standard breaker is always acceptable as a substitute in existing panels

Answer

Shortening the circuit run to less than 20 feet eliminates the AFCI requirement

Answer

AFCI breakers must always be used; the NEC provides no alternative method

Question 4

Which of the following is an example of a series arc fault that an AFCI is designed to detect?

Accepted Answer

A loose terminal connection creating intermittent arcing in series with the load

Answer

A frayed wire arcing against a grounded metal enclosure

Answer

A direct short circuit between hot and neutral conductors

Answer

A person touching a live conductor causing a ground fault

Question 5

GFCI protection for personnel is required at construction sites for temporary receptacles. This requirement is found in which NEC article?

Accepted Answer

Article 590

Answer

Article 210

Answer

Article 240

Answer

Article 680

Question 6

Which of the following statements is TRUE regarding AFCI protection and GFCI protection in a dwelling unit?

Accepted Answer

They are independent requirements; a circuit location may require both simultaneously

Answer

They serve the same purpose and either one satisfies both requirements

Answer

Installing AFCI protection eliminates the need for GFCI protection

Answer

Installing GFCI protection eliminates the need for AFCI protection

Question 7

What is the maximum acceptable current imbalance between the hot and neutral conductors that a GFCI will tolerate before tripping?

Accepted Answer

4–6 mA

Answer

1 mA

Answer

10 mA

Answer

15 mA