Question 1106 of 731 · Texas Journeyman Electrician Exam
Copper and aluminum conductors may be joined in the same terminal or splicing connector only when:
Exactly one answer is correct.
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Correct answer to question 1106
- D: The device is identified for intermixing the two metals
Explanation
110.14 prohibits terminals and splicing connectors from intermixing dissimilar conductors such as copper and aluminum unless the device is identified for that purpose, because of galvanic corrosion and different expansion.
More questions: Definitions, Theory and Plans
- 1108The required depth of working space in front of a 120/240-volt panelboard (150 volts or less to ground) is, for all conditions:
- 1109A 480Y/277-volt panelboard has exposed live parts on one side of the working space and a grounded concrete wall on the other (Condition 2). What is the minimum depth of working space?
- 1110Equipment at 277 volts to ground has exposed live parts on both sides of the working space (Condition 3). The minimum working space depth is:
- 1111What is the minimum width of the working space in front of electrical equipment covered by 110.26(A)?
- 1112For service equipment and panelboards, the minimum headroom of the working space is generally:
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