This connection is run below ground enclosed by heavy watertight pipes.

The repair and maintenance of underground lines are difficult and costly.

Running electrical power below ground keeps the landscape natural and uncluttered.

Overhead electrical power lines is expensive .

What is the common line-to-line voltage in Saudi Arabia for 3 phase connections?

What is the common line-to-neutral voltage in Saudi Arabia for 1-phase connections?

How much voltage we can get of we connect to RED and YELLOW cable?

How much voltage we can get of we connect to BROWN and BLACK cable?

What is the junction between the power lines and a;; wiring in a building?

Excessive current can damage electrical components.

____________ occurs when there is a direct path with little or no resistance created between two current carrying conductors.

During short circuit the value of current produced is _______________.

Select the 2 devices that are commonly used to protect the electrical system.

___________ is a consumable conductor that fails by opening when excessive current flows thru it.

A fuse can be used again.

A fuse is NOT reusable.

What do you call this device?

_____________ are circuit protection devices that prevent damage and injury by opening (tripping) the device when it detects an overcurrent condition.

Circuit breaker is reusable.

After clearing the source of fault or overcurrent, we can RESET the circuit breaker

Both fuse and circuit breaker protects the electrical system.

In circuit breaker, MCB means "_____________ Circuit Breaker"

In circuit breakers, MCCB means "_____________ Circuit Breaker"

What type of circuit breaker is shown in the picture?

How many pole does this circuit breaker has?

The rated current of circuit breaker is expressed in ______________.

This is the maximum capacity of circuit breaker to withstand against explosion during short circuit.

Circuit breaker can be RESET by pushing the lever back into contact ON position again.

The breaking capacity of a circuit breaker is expressed in ________________________.

What is the breaking capacity of this MCB?

A __________ is a component in an electric circuit which provide a safe and reliable means to close and open a circuit.

What type of switch is shown in the picture?

What type of switch is shown in the picture?

What type of switch that can be used to control light in 2 locations?

What type of switch is shown in the picture?

Two wire connect to each other without a terminal block is called _________.

An incandescent light fixture is mounted to a junction box for support and to ___________________ the spliced wires inside.

The 2 common methods for splicing wires are:

________________ and _________________.

A ________________ splice is used to splice conductors when conductors are subject to tension.

What do you call this splicing method?

What is the minimum number of turns when doing western union splice?

What replaces the insulation after splicing?

_______________ are used to quickly splice wires.

The neutral line connects to a terminal strip inside the service panel called the ___________________.

A scorched or burned fuse is an indication that the fuse has _______________________.

For safety, all switches need to be connected to _________________.

How many 2 way switches is needed when controlling a lamp in 2 locations?

How many 2 way (3- way) switches is needed when controlling a lamp in 3 locations?

How many intermediate switch (4-way) is needed when controlling a lamp in 3 locations?