Knife switches rated more than ____, and at over 1000 amperes at 251 to 1000 volts, shall be used only as isolating switches and shall not be opened under load.
A) 1000 amperes at 250 volts or less
B) 1100 amperes at 200 volts or less
C) 1200 amperes at 250 volts or less
D) 1200 amperes at 200 volts or less
Correct Answer:
Verified
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