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Magnetic control systems generally operate on 240 volts.

Manual push button line voltage starters are manufactured with two or three line voltage contacts.

The most common coil symbol used in schematic diagrams is the ____________________.

Fuses and ____________________ are designed to protect the circuit from a direct ground or short-circuit condition.

The flow switch symbol is used for both liquid and air flow switches.

Magnetic overload relays can be divided into two major types: electronic and ____________________.

Relays and contactors operate on the ____________________ principle.

____________________ show components in their electrical sequence without regard for physical location.

Some common causes of motor overloads are bad ____________________ in either the motor or the load the motor operates.

All solenoids that operate on alternating current must have a(n) ____________________ coil.