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.

Contactors are equipped with contacts intended to connect high current loads to the power line; these large contacts are called ____________________ contacts.