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NEHA Wastewater Practice Test
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Knife switches rated for more than 1200 amps at 250 volts or less may be used only as what?
A general-use snap switch opened under load
An isolating switch that shall not be opened under load
A motor controller used as the normal disconnect
A transfer switch used for emergency circuits
Reveal Answer
Correct Answer:
An isolating switch that shall not be opened under load
Explanation:
Correct answer: An isolating switch that shall not be opened under load. This is the correct term or requirement for the condition described; the other choices are related distractors but do not complete the rule correctly.
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