Question

which of the following is true about ground fault circuit interrupters (gfcis)?
select the best option
they dont need to be tested regularly
gfcis test for electrocution
there is only one type of gfci
each type of gfci needs to be tested per the guidelines of the type
if you need to review the content, it can be found in the ground fault circuit interrupters module of the avoiding electrocution hazards (construction) topic

Explanation:

• Analyze each option:
• "They don't need to be tested regularly" is false as GFCIs require regular testing.
• "GFCIs test for electrocution" is not accurate; GFCIs detect ground faults (imbalance in current) to prevent electrocution, not directly "test for electrocution" in that phrasing.
• "There is only one type of GFCI" is false as there are multiple types (e.g., receptacle - type, circuit - breaker - type, portable GFCIs).
• "Each type of GFCI needs to be tested per the guidelines of the type" is true because different GFCI types (like receptacle GFCIs, circuit - breaker GFCIs, portable GFCIs) have specific testing procedures outlined for their type.

Answer:

Each type of GFCI needs to be tested per the guidelines of the type