Question 8051 of 938 · Maryland Journeyperson Electrician Exam
What is the minimum ampere rating of the disconnecting means for a hermetic motor-compressor rated 1000 volts or less?
Exactly one answer is correct.
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Correct answer to question 8051
- B: 115 percent of rated-load or branch-circuit selection current, whichever is greater
Explanation
Section 440.12(A)(1) requires the disconnect to have an ampere rating of at least 115 percent of the nameplate rated-load current or branch-circuit selection current, whichever is greater. A horsepower rating is also required, based on the rated-load and locked-rotor currents.
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