Master electrician drill: Grounding and bonding

10 questions · Untimed · Worked answer after each question

System grounding, bonding jumpers, Table 250.66 and 250.122 sizing, electrodes and separate buildings. Ten questions on the 2023 NEC, each with a worked answer that cites its section.

Line drawing of two ground rods with clamps and a bare copper conductor running to a panel enclosure

Before you start

Keep your NEC handy. Questions follow the 2023 NEC and every answer cites its section.
Check each answer to see the worked solution before moving on. Checked answers cannot be changed.

Create a free account before you start

Create a free account to start. Every drill includes one free attempt. A master electrician pass unlocks every full timed exam and unlimited drills.

Original practice questions written for the NEC. Independent preparation, not affiliated with NFPA, ICC, PSI, Pearson VUE or any state board.