Electrical Systems Quiz

Write the Wiring Color Code to the correct Electrical System for 480/277 Three-Phase.

Answer explanation

Line 1 - Brown

Line 2 - Orange

Line 3 - Yellow

Neutral - Grey

Ground - Green, Green with Yellow Stripe, Bare Wire

Write the Wiring Color Code to the correct Electrical System for 240/120 Three-Phase.

Answer explanation

Line 1 - Black

Line 2 - Orange (Wild Leg)

Line 3 - Blue

Neutral - White

Ground - Green, Green with Yellow Stripe, Bare Wire

Write the Wiring Color Code to the correct Electrical System for 208/120 Three-Phase.

Answer explanation

Line 1 - Black

Line 2 - Red

Line 3 - Blue

Neutral - White

Ground - Green, Green with Yellow Stripe, Bare Wire

Write the Wiring Color Code to the correct Electrical System for 240/120 Single-Phase.

Answer explanation

Line 1 - White

Line 2 - Red

Neutral - White

Ground - Green, Green with Yellow Stripe, Bare Wire

Write the Wiring Color Code to the correct Electrical System for DC Power Systems.

Answer explanation

Positive - Red

Negative - Black

Ground - White or Grey

Three-Phase is most common in Residential.

• True

• False

The wiring color is same all over the world.

• True

• False

In the US, the frequency is 60 Hz.

• True

• False

Three-Phase system can be configured in Wye or Delta.

• True

• False

Solar Panels Produce DC Power

• True

• False