MASTER OPENBOOK EXAM #6

Tap conductors in a metal raceway for recessed fixture connections shall be limited to ____ feet in length.

• 2

• 4

• 6

• 10

The number of square feet that each made plate electrode should present to the soil is ___.

• 4 square feet

• 3 square feet

• 2 square feet

• 1 square foot

An auto transformer starter shall provide ___.

 

I.       An “ off position”

II.     A running position

III.    At least one starting position

• I only

• II only

• I and II only

• I, II and III only

When service-entrance conductors exceed 1100 kcmil per copper, the bonding jumper must be at least ___ percent of the largest phase conductor.

• 15

• 10

• 12 1/2

• 25

Nonmetallic cabinets in a wet location shall be permitted ___ airspace between concrete, masonry tile or similar wall.

• without

• with 1/4”

• with 1/8”

• 1/16”

A 30 amp remote panelboard containing conductors protected by a 30 amp fuses shall have a ___ equipment grounding conductor minimum.

• #12

• #10

• #8

• #6

The connection of a grounding electrode conductor to a driven ground rod is ___.

• required to be visible

• required to be accessible

• required to be readily accessible

• not required to be accessible

The maximum rating of a plug fuse is ___ amps.

• 20

• 30

• 15

• 40

A controller for a motor-compressor, serving more than one motor-compressor and other loads.

 

I.       Continuous duty F.L.C. rating

II.     A locker-rotor current rating not less than the combined loads as determined in accordance with section 440-12b

• I only

• II only

• either I or II

• both I and II

A multi-wire branch circuit may supply ___.

 

I. only one utilization equipment        

II. ungrounded conductors that are opened simultaneously

• I only

• II only

• both I and II

• neither I nor II