Answer :
Sure, let's break this down:
First, we need to evaluate the total degrees of bends for each option and verify whether they fall within the allowed limit set by the National Electrical Code (NEC), which allows up to 360 degrees of bends between pull points.
Let's look at each combination:
### Option a:
- Two 60-degree saddles: [tex]\(2 \times 60 = 120\)[/tex]
- Two 90-degree elbows: [tex]\(2 \times 90 = 180\)[/tex]
- Two 45-degree offsets: [tex]\(2 \times 45 = 90\)[/tex]
Summing these up:
[tex]\[120 + 180 + 90 = 390\][/tex]
This total (390 degrees) exceeds the NEC limit of 360 degrees.
### Option b:
- Two 45-degree offsets: [tex]\(2 \times 45 = 90\)[/tex]
- One 90-degree elbow: [tex]\(1 \times 90 = 90\)[/tex]
- Three 15-degree kicks: [tex]\(3 \times 15 = 45\)[/tex]
Summing these up:
[tex]\[90 + 90 + 45 = 225\][/tex]
This total (225 degrees) is within the NEC limit of 360 degrees.
### Option c:
- Three 90-degree elbows: [tex]\(3 \times 90 = 270\)[/tex]
- Two 45-degree offsets: [tex]\(2 \times 45 = 90\)[/tex]
- Two 15-degree kicks: [tex]\(2 \times 15 = 30\)[/tex]
Summing these up:
[tex]\[270 + 90 + 30 = 390\][/tex]
This total (390 degrees) also exceeds the NEC limit of 360 degrees.
### Option d:
- One 90-degree elbow: [tex]\(1 \times 90 = 90\)[/tex]
- One 120-degree saddle: [tex]\(1 \times 120 = 120\)[/tex]
- Four 45-degree offsets: [tex]\(4 \times 45 = 180\)[/tex]
Summing these up:
[tex]\[90 + 120 + 180 = 390\][/tex]
This total (390 degrees) once again exceeds the NEC limit of 360 degrees.
Given our analysis for each combination:
- Option a: 390 degrees (exceeds limit)
- Option b: 225 degrees (within limit)
- Option c: 390 degrees (exceeds limit)
- Option d: 390 degrees (exceeds limit)
The only combination that is within the NEC limit of 360 degrees is option b.
Therefore, the correct answer is:
b. Two 45-degree offsets, an elbow, and three 15-degree kicks
First, we need to evaluate the total degrees of bends for each option and verify whether they fall within the allowed limit set by the National Electrical Code (NEC), which allows up to 360 degrees of bends between pull points.
Let's look at each combination:
### Option a:
- Two 60-degree saddles: [tex]\(2 \times 60 = 120\)[/tex]
- Two 90-degree elbows: [tex]\(2 \times 90 = 180\)[/tex]
- Two 45-degree offsets: [tex]\(2 \times 45 = 90\)[/tex]
Summing these up:
[tex]\[120 + 180 + 90 = 390\][/tex]
This total (390 degrees) exceeds the NEC limit of 360 degrees.
### Option b:
- Two 45-degree offsets: [tex]\(2 \times 45 = 90\)[/tex]
- One 90-degree elbow: [tex]\(1 \times 90 = 90\)[/tex]
- Three 15-degree kicks: [tex]\(3 \times 15 = 45\)[/tex]
Summing these up:
[tex]\[90 + 90 + 45 = 225\][/tex]
This total (225 degrees) is within the NEC limit of 360 degrees.
### Option c:
- Three 90-degree elbows: [tex]\(3 \times 90 = 270\)[/tex]
- Two 45-degree offsets: [tex]\(2 \times 45 = 90\)[/tex]
- Two 15-degree kicks: [tex]\(2 \times 15 = 30\)[/tex]
Summing these up:
[tex]\[270 + 90 + 30 = 390\][/tex]
This total (390 degrees) also exceeds the NEC limit of 360 degrees.
### Option d:
- One 90-degree elbow: [tex]\(1 \times 90 = 90\)[/tex]
- One 120-degree saddle: [tex]\(1 \times 120 = 120\)[/tex]
- Four 45-degree offsets: [tex]\(4 \times 45 = 180\)[/tex]
Summing these up:
[tex]\[90 + 120 + 180 = 390\][/tex]
This total (390 degrees) once again exceeds the NEC limit of 360 degrees.
Given our analysis for each combination:
- Option a: 390 degrees (exceeds limit)
- Option b: 225 degrees (within limit)
- Option c: 390 degrees (exceeds limit)
- Option d: 390 degrees (exceeds limit)
The only combination that is within the NEC limit of 360 degrees is option b.
Therefore, the correct answer is:
b. Two 45-degree offsets, an elbow, and three 15-degree kicks
