Question 1076 of 749 · Maryland Journeyperson Electrician Exam
On an electrical plan, the letter S with a small subscript 3 next to it indicates:
Exactly one answer is correct.
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Correct answer to question 1076
- A: A three-way switch
Explanation
The letter S marks a switch, and the subscript tells the type: S3 is a three-way switch and S4 a four-way switch. A plain S is a single-pole switch.
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