HW TEST #1

Where this code specifies that one equipment shall be "in sight from", "within sight from" or "within sight of", and so forth, another equipment, the specified equipment is to be visible and not more than ________ distant from the other

100 ft

If the cover for an underground pull box used for circuits over 600 volts is not locked, bolted, or screwed into place, then it must weigh equal to which of the following:

100 lbs.

The required working space for access to live parts operating at 300 volts to ground, where there are exposed live parts on one side and grounded parts on the other side is.

3 1/2 ft

The working space in front of the electric equipment shall not be less than wide, or the width of the equipment, whichever is greater.

30 in

Where rear access is required to work on de-energized parts on the back of enclosed equipment, a minimum working space of _________ horizontally shall be provided.

30 inches

Access openings in a manholes shall be not less than

36"

The dimensions of working space for access to live parts operating at 300V, nominal to ground, where there are exposed live parts on both sides of the workspace is

4 ft

An insulated grounded conductor of _________ or smaller shall be identified by a continuous white or gray outer finish, or by three continuous white stripes on other than green insulation along its entire length A locking system is provided for protection

6 AWG

The floors of vaults in contact with the earth shall be of concrete that is not less than __________ thick, but where the vault is constructed with a vacant space or other stories below it, the floor shall have adequate structural strength for the load imposed on it and a minimum fire resistance of 3 hours.

6 Inches

For equipment rated 1200 amps or more and over 6ft wide that contains overcurrent devices, switching devices, or control devices, there shall be one entrance to and egress from the required working space not less than 24 inches. wide and ____________ high at each end of the working space.

6 ft 6 Inches

Equipment associated with the electrical installation can be located above or below other electrical equipment within their working space when the associated equipment does not extend more than from the front of the electrical equipment.

6 inches

According to the NEC, bare live parts are guarded from the public in the following methods except?

Protected by Fireproof Curtain

When the Code uses the words "__________" it means the identified actions are allowed but not required, and they may be options or alternative methods.

Shall be Permitted

14. Which of the following are not permitted for the protection of equipment in electrical vaults?

Stud walls covered with wallboard having a 3 Hour Rating

Manhole openings for personnel shall be located where they are not directly above electrical equipment or conductors in the enclosure. Where this is not practicable,

a protective barrier or a fixed ladder shall be provided

The Authority having jurisdiction has the responsibility _______________.

all of the above

To guard live parts over 50V but less than 600V, equipment is permitted to be _____.

any of these

In the NEC, the words "____________" indicate a mandatory requirement.

d. A or B

On a 4-Wire, delta-connected system where the midpoint of one phase winding is grounded, only the conductor or busbar having the higher phase voltage to ground shall be durably and permanently marked by an outer fishin that is _________________ in color or by other effective means. Such identification shall be placed at each point on the system where a connection is made if the grounded conductor is also present.

orange

In locations where electrical equipment is likely to be exposed to ___________ enclosures or guards shall be so arranged and of such strength as to prevent such damage.

physical damage

A door used by personnel to exit the work space that is less than 25 feet from the working space shall__________.

swing outward with simple pressure

When leads are supplied with lamp holders the conductor attached to the screw shell shall have a ____________ finish.

white or gray

Where conductors of different systems are installed in the same raceway, one system shall have a neutral having an outer covering of white or natural gray and each other system having a neutral shall have another covering of

white with colored stripe other than green or distinguished by other suitable approved means