the lightest duty and most widely used non-flexible metal conduit is _________

• underwriters laboratories inc.

• NEC section 314.40 (D)

• Electrical metallic tubing

• rigid nonmetallic conduit

an agency that evaluates and approves electrical components and equipment

• underwriters laboratories inc.

• Electrical metallic tubing

• False, RMC has larger outside diamete

• rigid nonmetallic conduit

NEC Section 376.22(A) limits wire way fill to no more than ____ of the cross-sectional area of the wireway

• 20%

• EMT

• 75%

• bushing

conductors in PVC are subject to a ________

• industrial

• grounded bonded

• NEC section 314.40 (D)

• reduced voltage drop

RMC is made of ________?

• steel or aluminum

• industrial

• Type DB Schedule 80

• NEC Article 392

Which of the following covers grounding provisions for metal boxes?

• NEC Article 392

• rigid nonmetallic conduit

• EMT

• NEC section 314.40 (D)

when installing conduit in a wet area, a ______ air space must be provided between it and the supporting surface

• Raintight

• bushing

• type T

• 1/4 "

EMT and RMC connectors are interchangeable.

• industrial

• the back

• concrete

• false

The fitting used to protect conductors from the sharp edges of conduit where it enters a box is called a ____.

• Raintight

• bushing

• 1/4 "

• type T

A type LB conduit body has a cover on ____.

• the back

• industrial

• type T

• concrete