History of Wires

Who invented the "electric conductor"?

• Thomas Edison

• Ben Franklin

• John Hancock

• Thomas Jefferson

When was Knob and Tube wiring installed in homes?

• Only prior to 1920

• It still is installed today

• 1900-1970

• From 1880 to 1950

Knob and Tube wiring has how many wires?

What kind of wire cable has a metal covering?

• Romex

• AX Cable

• Armored Cable

• Tough Cable

How many amps can a 14-2 cable carry?

• 15

• 20

• 30

• 10

How many wires are included in a 12-3 cable?

• 2

• 3

• 4

• 1

12-2 cable can carry this many amps.

• 20

• 15

• 30

• 40

Electrical cable that is white/light gray has which characteristics?

• can carry 15 amps

• is labeled 14-2 or 14-3

• is labeled 12-2 or 12-3

• A and B

What are the two main types of wires?

• Solid and Stranded

• Straight and Twisted

• Black and White

• Romex and Coaxial

True or False. The higher the number of the wire indicates the wire can carry more amps.

• True

• False