NCCER Electrical 2 module 9 Exam 2025 Questions & Answers with 100% Correct Answers | Verified

A ground fault is described as - 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 - 12.5% A ground test utilizing an auxiliary electrode and an auxiliary potential electrode is known as - 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 - Ground it no connection to the box is required The fall of potential method is used to measure what - Earths resistance Rod, pipe, and plate electrodes must have a reistance to ground of at least - 25ohms In a separately derived system the equipment bonding jumper connects to the - system housing to the Neutral bus bar Which type of system is required to be grounded - AC system over 1kv that supplies mobile or portable equipment The size of an EGC Equipment Grounding Conductor is determined by what - Size of Overcurrent protection device (Breaker) Which of the following is true when installing grounding at more than one building? - The grounded circuit conductor and equipment grounding conductor must both be extended to the second building A transformer supplied system operating at less than 50v must be grounded is the supplied voltage to the transformer exceeds - 150v