NCCER Electrical 2 module 9- Questions
& Answers
A ground fault is described as Correct Ans-an unintentional electrically conducting
connection between an ungrounded conductor of an electrical circuit and a normally non current
carrying conductor
Where a main bonding jumper is required by NEC, the main bonding jumper cannot be less than
what percentage Correct Ans-12.5%
A ground test utilizing an auxiliary electrode and an auxiliary potential electrode is known as
Correct Ans-3 point test
If single gain nail on non metallic boxes are used with NM cable which of the following is true,
plastic box dont have to Correct Ans-Ground it no connection to the box is required
The fall of potential method is used to measure what Correct Ans-Earths resistance
Rod, pipe, and plate electrodes must have a reistance to ground of at least Correct Ans-
25ohms
In a separately derived system the equipment bonding jumper connects to the Correct Ans-
system housing to the Neutral bus bar
& Answers
A ground fault is described as Correct Ans-an unintentional electrically conducting
connection between an ungrounded conductor of an electrical circuit and a normally non current
carrying conductor
Where a main bonding jumper is required by NEC, the main bonding jumper cannot be less than
what percentage Correct Ans-12.5%
A ground test utilizing an auxiliary electrode and an auxiliary potential electrode is known as
Correct Ans-3 point test
If single gain nail on non metallic boxes are used with NM cable which of the following is true,
plastic box dont have to Correct Ans-Ground it no connection to the box is required
The fall of potential method is used to measure what Correct Ans-Earths resistance
Rod, pipe, and plate electrodes must have a reistance to ground of at least Correct Ans-
25ohms
In a separately derived system the equipment bonding jumper connects to the Correct Ans-
system housing to the Neutral bus bar
