Quiz in Tech10 (Electrical Metallic Tubing)

What is the purpose of electrical metallic tubing?

• To provide protection to enclosed conductors from impact, moisture, and chemical vapors

• To simplify design and construction compared to multiple runs of cables

• To lessen or eliminate fire hazard and electrical accident

• To allow frequent wiring changes

What is an example of a rigid electrical conduit?

• EMT (electrical metal tubing)

• Galvanized steel

• Aluminum

• Composite cable

What is the standard length of electrical metallic tubing?

• 5 ft

• 8 ft

• 10 ft

• 12 ft

In which locations should EMT protected with enamel can be used?

• Under wet locations

• Cinder fill areas

• Hazardous locations

• Corrosive fumes and vapor areas

What types of fittings are used with electrical metallic tubing?

• Connectors, couplings, adapters, locknuts

• Elbows, condulets, clamps/straps

• Utility boxes, octagonal boxes

• Saddle bends, square saddles

How many adapter bends are allowed for every one run of tubing?

• Two

• Three

• Four

• Five

What type of bend is used when the conduit crosses an obstacle?

• Elbow bend 90

• Offset bend

• Saddle bend

• Square saddle

Square saddle is just a combination of two elbow bends.

• True

• False

What is the purpose of a locknut in EMT installation?

• To provide waterproofing

• To secure the tubing to the connector

• To prevent corrosion

• To allow easy removal of conductors

What is the maximum number of conductors allowed in an EMT with a trade size of 1/2" AWG #14?

• 8

• 10

• 12

• 16