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A disconnecting means of motors over 600 volts muse be capable of being locked in _______ so that it cannot be inadvertently closed when someone is working on the motor.
Five Resistors each with 1 ohm are connected in parallel and 5 ohm resistor is connected in series. What is equivalent resistance of the circuit?
What is the minimum size of 3 wire service for single dwelling with an initial load of 20 kVA or more.
The full load current of 3 phase 4 HP continuous duty motor is 60ampers with service factor of 1.1. what is its rating of overload separator?
How much maximum percentage of auxiliary gutters interior cross sectional area can be filled with conductors?
Equipment grounded conductors are identified by _______ color.
The lightening outlet installed at or near heating, air-conditioning and refrigeration equipment shall be controlled _______
By a switch