Code T!

Question 1

Enclosures for Electrical Installations Over 600 Volts

Answer 1

For installations other than equipment as described in 110.31(D), a wall, a screen, or fence “shall be” used to enclose and outdoor electrical installations to deter access by person who are not qualified.
A fence “shall not be” less than (2.44m) 8 feet in
Height.

Question 2

Fire Resistance of Electrical Vaults Over 600 volts, nominal “shall be” constructed of materials that have adequate structrural strength for the conditions, with a minimum fire
rating of ___ hours and the floors of the vaults in contact with the earth shall be of _____ that is not less than ___.

Answer 2

NYC amend 110.31(A) (Fire resistance of electrical vaults)
3 hour fire rating
Concrete
6 inches (102mm) thick

Question 3

Over 600 Volts Work space equipment “shall be” not less than ____ vertically(high) and _____ parallel(horizontally) to the equipment.

Answer 3

110.32 (work space about equipment)
6 1/2 feet(2.0m) (high) vertical
3 feet (914mm) (parallel) horizontal

Question 4

Table 110.31 Minimum Distance from Fence to Live Parts

Answer 4

NYC amend- At least one entrance to enclosures for electrical installations as described in 110.31 not less than 30in(762mm) wide 6 1/2ft(2m) high shall be provided to give access to the working space around the electrical equipment.

Nominal Voltage Minimum Distance to Live Parts
601-13,799 10 ft ( 3.05m)
13,800-230,000 15 ft (4.57m)
Over 230,000 18 ft (5.49m)

Question 5

Over 600 Volts personnel doors intended for entrance and egress from the working space less than ____ feet from the nearest edge of the working space, the door(s) shall open in the direction of egress and be equipped with______ bars, ______ plates, or other devices that normally latched but own under _____ pressure.

Answer 5

110.33(A)(3) ( Personnel doors)
25 feet (7.6m)
panic
pressure 
simple

Question 6

Over 600 Volts as per minimum depth of clear working space at electrical equipment, condition 1 is?

Answer 6

Table 110.34(A) Condition 1
Exposed live parts on one side of the working space and no live or grounded parts on the other side of the working space, “OR” exposed live parts on both sides of the working space that are effectively guarded by insulating materials.

Question 7

Over 600 Volts as per minimum depth of clear working space at electrical equipment, condition 2 is?

Answer 7

Table 110.34(A) Condition 2
Exposed live parts on one side of the working space and grounded parts on the other side of the working space. Concrete, brick, or tile walls “SHALL BE” considered as grounded.

Question 8

Over 600 Volts as per minimum depth of clear working space at electrical equipment, condition 3 is?

Answer 8

Table 110.34(A) Condition 3

Exposed live parts on both sides of working space.

Question 9

Table 110.34(A)

Minimum Depth of Clear Working Space at Electrical Equipment

Answer 9

Nominal Voltage Minimum Clear Distance
to Ground Condition 1 Condition 2 Condition 3
601-2500 V 3 ft (900mm) 4 ft (1.2m) 5 ft(1.5m)
2501-9000V 4 ft (1.2m) 5 ft (1.5m) 6 ft(1.8m)
9001-25,000V 5 ft(1.8m) 6 ft (1.8m) 9 ft(2.8m)
25,001-75,000V 6 ft (1.8m) 8 ft (2.5m) 10 ft(3.0m)
Above 75kv 8 ft (2.5m) 10 ft(3.0m) 12ft (3.7m)

Question 10

Exception: 110.34(A) tabel
Where rear access is required to work on de-energized parts on the back of the enclosed equipment, a minimum working space of ____ inches _____
“shall be” provided.

Answer 10

NYC- Amend 36 inches/horizontally

Question 11

Table 110.34(E) Elevation of unguarded live parts above Working Space

Answer 11

Nominal Voltage B/w Phases Elevation
601-7,500 V 9 ft (2.8m)
7,501-35,000 V 9 ft 6 in (2.9m)
Over 35 KV 9 ft 6 in + 0.37in per KV(2.9m + 9.5 mm/KV)

Question 12

Bare Live Parts Under 600 Volts guarded from public in the following methods, by location:

Answer 12

110.27(A) Live parts guarded against accidental contact.
By Location only accessible to qualified personnel:
1) In a room, vault, or similar enclosure that is accessible only to qualified persons.
2) By suitable permanent, substantial partitions screens.
3) On a suitable balcony, gallery, or platform
4) By elevation of 8 ft(2.5m) or more above the floor

Question 13

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

Answer 13

110.26(A)(3) Height of working Space
located above or below the electrical equipment “Shall be” permitted to extend not more than 6 inches(150mm) beyond the front of the electrical equipment.

6 inches

Question 14

A 125 Volt, single phase, 15-or 20-ampere-rated receptacle outlet “shall be” installed at an accessible location for servicing of heating, air-conditioning, and refrigeration equipment. The receptacle shall be located on the same level within _____ feet.

Answer 14

210.63 Heating, Air-Conditioning, and Refrigeration
Equipment Outlet
25 feet

Question 15

At least one receptacle outlet “shall be” installed within _____ inches of the top of a show window for each ___ _____ foot or major fraction there of of show window area measured horizontally as its maximum width.

Answer 15

210.62 Show Windows
18 inches
12 linear feet

Question 16

As per NYC Code in addition to the number of branch circuits required in a dwelling unit and individual brand circuit “shall be” provided for each _____ receptacle.

Answer 16

NYC Amend 210.52(i) Dwelling Unit receptacle outlets
In addition to the requirements set forth in subsections (A) through (H) of this section, living rooms, bedrooms, dining rooms or similar rooms shall have at least one receptacle outlet installed for air conditioners.

Question 17

Table 110.26(A)(1) Working Spaces

Answer 17

Condition 1 Condition 2 Condition 3
0–150 914 mm (3 ft) 914 mm (3 ft) 914 mm (3 ft)
151–600 914mm(3ft) 1.07m(3ft6in.) 1.22m(4ft)

Question 18

Under 600 volts Condition 1

Answer 18

Table 110.26(A)(1) Working spaces
Exposed live parts on one side of the working space and no live or grounded parts on the other side of the working space, or exposed live parts on both sides of the working space that are effectively guarded by insulating materials

Question 19

Under 600 volts Condition 2

Answer 19

Table 110.26(A)(1) Working spaces
Exposed live parts on one side of the working space and grounded parts on the other side of the working space. Concrete, brick, or tile walls shall be considered as grounded.

Question 20

Under 600 volts Condition 3

Answer 20

Table 110.26(A)(1) Working spaces

Exposed live parts on both sides of the working space.