Question 5022 of 731 · Texas Journeyman Electrician Exam
A service has three parallel sets of 400 kcmil copper per phase. What is the minimum copper GEC to building steel?
Exactly one answer is correct.
You got of questions right. Here on the question pages nobody remembers which ones you got wrong. The trainer saves your progress and asks the mistakes again until they stick.
Or free: the 10 questions most people get wrong
Show solution
Correct answer to question 5022
- B: 3/0 AWG
Explanation
The equivalent area is 3 x 400 = 1200 kcmil, which exceeds 1100 kcmil. Table 250.66 requires a 3/0 copper GEC for copper service conductors over 1100 kcmil.
More questions: Grounding and Bonding
- 5023How must an 8 AWG copper grounding electrode conductor be installed?
- 5024When does a 4 AWG copper grounding electrode conductor require protection?
- 5026NEC 2026 added which method for splicing a grounding electrode conductor, in addition to irreversible compression and exothermic welding?
- 5027A ferrous metal raceway that encloses a grounding electrode conductor must be
- 5028In NEC 2026, the requirement to bond ferrous enclosures of a GEC at both ends was expressly extended to include
- 5030At the service, the main bonding jumper connects