TL;DR
Study the assessment and management of eye, ear, nose, throat, and facial emergencies. These specialized assessments require specific knowledge tested on the Journeyman Electrician License Exam.
Free Bonding Requirements Practice Questions
Journeyman Electrician License Exam · Grounding & Bonding
This module covers Bonding Requirements as part of the Grounding & Bonding section, testing your understanding of core concepts and their practical application.
| Exam | Journeyman Electrician License Exam |
| Pass Rate | 55% |
| Duration | 240 minutes |
| Module | Bonding Requirements |
Why Bonding Requirements matters
Bonding Requirements is one of the most tested NEC topics because improper grounding and protection cause electrical fires and fatalities.
Sample Practice Questions (5)
1. Per NEC 250.92(B), when a service raceway requires bonding, standard locknuts and bushings are NOT considered adequate. Which of the following IS an approved bonding method for service raceways?
- Double locknuts (one inside, one outside)
- Bonding-type locknuts
- Plastic bushings with grounding lug
- Set screws on EMT connectors
2. Per NEC 250.28(D), the main bonding jumper or system bonding jumper shall be a wire, bus, screw, or similar suitable conductor. When the supply conductors are larger than 1100 kcmil copper or 1750 kcmil aluminum, the bonding jumper shall be sized at not less than:
- 3/0 AWG copper per Table 250.66
- 12.5% of the equivalent area of the largest phase conductor
- 6 AWG copper minimum
- 25% of the service conductor area
3. Per NEC 250.102(C), supply-side bonding jumpers for service raceways shall be sized based on Table 250.66 using the area of the largest ungrounded service-entrance conductor. If a service has three sets of parallel 500 kcmil copper conductors per phase, what is the equivalent area of the largest ungrounded conductor for sizing purposes?
- 500 kcmil
- 1000 kcmil
- 1500 kcmil
- 750 kcmil
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Start practicing free →4. A building has a 400-ampere, 208Y/120V service with 500 kcmil copper service-entrance conductors per phase. Per NEC 250.102(C) and Table 250.66, the minimum size copper supply-side bonding jumper is:
- 2 AWG
- 1/0 AWG
- 2/0 AWG
- 3/0 AWG
5. Per NEC 250.104(B), exposed structural metal that is interconnected to form a metal building frame and is not intentionally grounded shall be bonded to the:
- Nearest water pipe
- Service equipment enclosure, grounded conductor at the service, GEC, or grounding electrode system
- Nearest branch circuit equipment grounding conductor
- Earth ground rod directly
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