,
,
, To answer Questions 28–31, refer to the Plans included with this book. Determine the
Following dimensions. Write the dimensions using unit names, not symbols (for example, 1
foot, not 1’), and indicate the source of the information.
28. What is the inside clear distance of the interior stairway to the drugstore basement?
Answer: The inside clear distance of the interior stairway to the Drugstore basement is
4 ft 0 in. (1.22 m), as scaled from Sheet A2.
29. What is the gross square footage of each floor of the building?
Answer: The gross area of each floor of the building is 60 ft × 43 ft = 2580 sq. ft (18.82
m × 13.1 m = 246.5 sq. m), as taken from Sheets Al, A2, and A3.
30. What is the distance in the drugstore from the exterior block wall to the block wall
separating the drugstore from the bakery?
Answer: The distance from the exterior block wall in the Drugstore to the block wall
separating the Drugstore from the Bakery is 21 ft 7 in. (6.58 m), as shown on Sheet A2.
31. What is the finished floor to finished ceiling height on the second floor?
Answer: The finished floor to finished ceiling height on the second floor is 8 ft 6 in.
(2.59 m), as available from East and West Elevations A41–2, and Sheet A6, Cross
Sections A–A and B–B.
For problems 32–34, cite the NEC source. We will show the method of using the NEC
Index for the first two questions in Chapter 1 and will provide this same method of
locating requirements in other chapters of this book.
32. The standard ampere ratings for fuses and fixed trip circuit breakers.
Answer: The standard ampere rating for fuses and fixed trip circuit breakers is given in
NEC Table 240.6(A).
To find this information in the Index of the NEC, locate “Circuit breakers, Article 240, and
locate Rating and under that locate Fixed-Trip circuit breakers, 240.6(A)…” This will
provide the Section number for the ratings.
33. The minimum bending radius for metal-clad cable with a smooth sheath with an
external diameter of 1 in.
Answer: The minimum bending radius for metal clad cable with a smooth sheath with
an external diameter of 1 in. (size 1) is given in NEC 330.24(A)(2) as 12 times the
diameter.
To find this information in the Index of the NEC, locate “Metal-clad Cable, Article 330, and
under that locate “Bends, 330.24.” 330.24(A)(2).
34. The permission to use splices in busbars as grounding electrode conductors.
Answer: The permission to use splices in busbars as a grounding electrode conductor
is given in NEC 250.64(C)(2).
,
, To answer Questions 28–31, refer to the Plans included with this book. Determine the
Following dimensions. Write the dimensions using unit names, not symbols (for example, 1
foot, not 1’), and indicate the source of the information.
28. What is the inside clear distance of the interior stairway to the drugstore basement?
Answer: The inside clear distance of the interior stairway to the Drugstore basement is
4 ft 0 in. (1.22 m), as scaled from Sheet A2.
29. What is the gross square footage of each floor of the building?
Answer: The gross area of each floor of the building is 60 ft × 43 ft = 2580 sq. ft (18.82
m × 13.1 m = 246.5 sq. m), as taken from Sheets Al, A2, and A3.
30. What is the distance in the drugstore from the exterior block wall to the block wall
separating the drugstore from the bakery?
Answer: The distance from the exterior block wall in the Drugstore to the block wall
separating the Drugstore from the Bakery is 21 ft 7 in. (6.58 m), as shown on Sheet A2.
31. What is the finished floor to finished ceiling height on the second floor?
Answer: The finished floor to finished ceiling height on the second floor is 8 ft 6 in.
(2.59 m), as available from East and West Elevations A41–2, and Sheet A6, Cross
Sections A–A and B–B.
For problems 32–34, cite the NEC source. We will show the method of using the NEC
Index for the first two questions in Chapter 1 and will provide this same method of
locating requirements in other chapters of this book.
32. The standard ampere ratings for fuses and fixed trip circuit breakers.
Answer: The standard ampere rating for fuses and fixed trip circuit breakers is given in
NEC Table 240.6(A).
To find this information in the Index of the NEC, locate “Circuit breakers, Article 240, and
locate Rating and under that locate Fixed-Trip circuit breakers, 240.6(A)…” This will
provide the Section number for the ratings.
33. The minimum bending radius for metal-clad cable with a smooth sheath with an
external diameter of 1 in.
Answer: The minimum bending radius for metal clad cable with a smooth sheath with
an external diameter of 1 in. (size 1) is given in NEC 330.24(A)(2) as 12 times the
diameter.
To find this information in the Index of the NEC, locate “Metal-clad Cable, Article 330, and
under that locate “Bends, 330.24.” 330.24(A)(2).
34. The permission to use splices in busbars as grounding electrode conductors.
Answer: The permission to use splices in busbars as a grounding electrode conductor
is given in NEC 250.64(C)(2).
