Solution Manual For Illustrated Guide to the National Electrical Code, 7th Edition

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’s Guide
to Accompany the
Illustrated Guide
to the NEC®
, 7e
Charles R. Miller
TEXTBOOK GUIDE

iii
CONTENTS
To the . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
SECTION 1 FOUNDATIONAL PROVISIONS
UNIT 1 INTRODUCTION TO THE NATIONAL ELECTRICAL CODE® . . . . . . . . . . . . . . . . . . . . . . . . . . 1
UNIT 2 DEFINITIONS
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
UNIT 3 BOXES AND ENCLOSURES
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
UNIT 4 CABLES
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
UNIT 5 RACEWAYS AND CONDUCTORS
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SECTION 2 ONE-FAMILY DWELLINGS
UNIT 6 GENERAL PROVISIONS
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
UNIT 7 SPECIFIC PROVISIONS
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
UNIT 8 LOAD CALCULATIONS
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
UNIT 9 SERVICES AND ELECTRICAL EQUIPMENT
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
SECTION 3 MULTIFAMILY DWELLINGS
UNIT 10 COMPREHENSIVE PROVISIONS
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
UNIT 11 LOAD CALCULATIONS
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

iv
SECTION 4 COMMERCIAL LOCATIONS
UNIT 12 GENERAL PROVISIONS
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
UNIT 13 NONDWELLING LOAD CALCULATIONS
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
UNIT 14 SERVICES, FEEDERS, AND EQUIPMENT
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
SECTION 5 SPECIAL OCCUPANCIES, AREAS, AND EQUIPMENT
UNIT 15 HAZARDOUS (CLASSIFIED) LOCATIONS
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
UNIT 16 HEALTH CARE
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
UNIT 17 INDUSTRIAL LOCATIONS
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
UNIT 18 SPECIAL OCCUPANCIES
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
UNIT 19 SPECIFIC EQUIPMENT
Competency Test Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
FINAL EXAM 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
FINAL EXAM 1 ANSWERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
FINAL EXAM 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
FINAL EXAM 2 ANSWERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

v
TO THE
Illustrated Guide to the NEC ® 7e is an exciting new tool for those who teach the National Electrical Code. This
text represents a dramatic blend of new presentation styles with tried-and-true instructional practices. Symbolizing
a revolutionary breakthrough in teaching material, the text communicates with the reader primarily through
visualization. If a picture is truly worth a thousand words, this book is a virtual encyclopedia on the National
Electrical Code. While technically accurate and highly detailed illustrations tell a story all their own, they are further
enhanced through clearly written, concise blocks of text that can be read very quickly and understood with ease.
Not only is the presentation method exceptional, but also the organization of material is unique. After covering
fundamental provisions in Section 1, Illustrated Guide to the NEC proceeds to address code requirements
according to the type of occupancy. Comprehensive information is given

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1
Section 1 FOUNDATIONAL PROVISIONS
UNIT 1 There is no competency test for Unit 1.
UNIT 2 COMPETENCY TEST
1. Answer: general purpose
Reference: Article 100 (Branch-Circuit, General
Purpose)
2. Answer: remote-control circuit
Reference: Article 100 (Remote-Control Circuit)
3. Answer: multiwire
Reference: Article 100 (Branch-Circuit,
Multiwire)
4. Answer: periodic duty
Reference: Article 100 (Duty: Periodic Duty)
5. Answer: main bonding jumper
Reference: Article 100 (Bonding Jumper, Main)
6. Answer: grounding electrode
Reference: Article 100 (Grounding Electrode
Conductor)
7. Answer: weatherproof
Reference: Article 100 (Weatherproof:
Informational Note)
8. Answer: effective ground-fault current path
Reference: Article 100 (Effective Ground-Fault
Current Path)
9. Answer: bypass isolation switch
Reference: Article 100 (Switch, Bypass Isolation)
10. Answer: multioutlet assembly
Reference: Article 100 (Multioutlet Assembly)
11. Answer: wet
Reference: Article 100 (Location, Wet)
12. Answer: thermal protector
Reference: Article 100 (Thermal Protector:
Informational Note)
13. Answer: cabinet
Reference: Article 100 (Cabinet)
14. Answer: hoistway
Reference: Article 100 (Hoistway)
15. Answer: c) either I or II
Reference: 210.4(C) Exceptions No.1 and 2
16. Answer: fuse
Reference: Article 100 Part B. Over 1000
Volts, Nominal (Fuse)
17. Answer: Festoon lighting
Reference: Article 100 (Festoon Lighting)
18. Answer: One item named must be a basin
(lavatory or sink); the other item can
be a toilet, a urinal, a tub, a shower,
a bidet, or similar plumbing fixtures.
Reference: Article 100 (Bathroom)
19. Answer: c) maximum
Reference: Article 100 (Continuous Load)
20. Answer: resistor
Reference: Article 100 (Grounded, Solidly)
21. Answer: outlet
Reference: Article 100 (Outlet)
22. Answer: branch-circuit
Reference: Article 100 (Branch-Circuit)
23. Answer: Raintight
Reference: Article 100 (Raintight)
24. Answer: d) an indefinitely long time
Reference: Article 100 (Duty, Continuous)
25. Answer: its temperature rating
Reference: Article 100 (Ampacity)
26. Answer: 50
Reference: Article 100 (In Sight From [Within
Sight From, Within Sight])
27. Answer: multifamily dwelling
Reference: Article 100 (Dwelling, Multifamily)
28. Answer: the earth
Reference: Article 100 (Ground)
29. Answer: vectorial sum
Reference: Article 100 (Neutral Point:
Informational Note)

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2
UNIT 3 COMPETENCY TEST
1. Answer: d) 72; 6 (ft) x 12 (in.) =
72 in.
Reference: 314.28(B)
2. Answer: 2
Reference: 382.15(A)
3. Answer: “X” = 24 in., and “Y” = 12 in. The “X”
dimension contains both straight and
angle pulls. Use the larger of the two.
“X” (straight pull) = 3 x 8 = 24. “X”
(angle pull) 3 x 6 + 2 = 20. The “Y”
dimension has an angle pull only. “Y”
= 2 x 6 + 0 = 12.
Reference: 314.28(A)
4. Answer: ½
Reference: 314.24(A)
5. Answer: 8. The total 12 AWG conductors
permitted by Table 314.16(A) is 18.
The flat plaster ring does not provide
any additional cubic in. capacity. Two
receptacles count as 4 [314.16(B)(4)],
two internal cable clamps count as
1 [314.16(B)(2)], four 12 AWG THHN
copper conductors count as 4
[314.16(B)(1)], and two grounding
conductors count as 1 [314.16(B)(5)]
12 AWG conductors. There are 10
existing 12 AWG conductors. Three
wirenuts, two pigtails, and one equip-
ment bonding jumper do not count.
Reference: 314.16
6. Answer: ¼
Reference: 312.2
7. Answer: 0.0625 in.
Reference: 314.40(B)
8. Answer: bushings
Reference: 314.42
9. Answer: a) none
Reference: 314.23(F)
10. Answer: separate box
Reference: 314.28(D)
11. Answer: 4 (6 – 2 = 4)
Reference: 314.16(B)(4) and Table 314.16(A)
12. Answer: equipment grounding conductor
Reference: 314.40(D)
13. Answer: ¼
Reference: 314.20
14. Answer: temperature-rated
Reference: 314.17(C)
15. Answer: 0
Reference: 312.2 Exception
16. Answer: 6
Reference: Table 314.16(A)
17. Answer: 8
Reference: 382.30(A)
18. Answer: 4
Reference: 314.28(A)(2) Exception and Table
312.6(A)
19. Answer: individual holes
Reference: 314.17(C)
20. Answer: 6
Reference: 314.27(A)(1) Exception
21. Answer: 48 times
Reference: 314.71(A)
22. Answer: 1/8 in., 1/4 in.
Reference: 314.15
23. Answer: substantially equivalent
Reference: 110.12(A)

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3
UNIT 4 COMPETENCY TEST
1. Answer: 12
Reference: 334.30
2. Answer: 39.37
Reference: 324.41
3. Answer: 4½
Reference: 320.30(B) and (C)
4. Answer: 35
Reference: Table 326.24
5. Answer: Type MC (Metal-clad cable)
Reference: 330.2
6. Answer: moisture
Reference: 332.40(B)
7. Answer: c) 8 (two 6 AWG or three 8 AWG
conductors)
Reference: 334.15(C)
8. Answer: Type MV (Medium voltage cable)
Reference: 328.2
9. Answer: d) I, II, and III
Reference: 340.116
10. Answer: transition assembly
Reference: 324.40(D)
11. Answer: c) 24. The question requires the
answer in in., not ft (2 ft = 24 in.).
Reference: 320.30(D)(2)
12. Answer: grounded circuit conductor
Reference: 404.2(C)
13. Answer: seven
Reference: 330.24(B)
14. Answer: 1¼
Reference: 300.4(A)(1)
15. Answer: 7 ft Section 334.23 states that non-
metallic-sheathed cable installed in
attics must comply with 320.23.
Reference: 320.23(A)
16. Answer: c) I and III only
Reference: 324.120(A)
17. Answer: Type MI (Mineral-insulated or Mineral-
insulated, metal-sheathed cable)
Reference: 332.2
18. Answer: c) 90°C
Reference: 320.80(A)
19. Answer: d) 72. The question is looking for in.
6 (ft) x 12 (in.) = 72 (in.).
Reference: 330.30(B) and (C)
20. Answer: 168
Reference: Table 326.80
21. Answer: b) 12
Reference: Table 300.5
22. Answer: soldered
Reference: 394.56
23. Answer: 1/16
Reference: 300.4(A)(1)
24. Answer: 20, 30
Reference: 324.10(B)(2)
25. Answer: 6
Reference: 332.30
26. Answer: 18
Reference: Table 300.5

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4
UNIT 5 COMPETENCY TEST
1. Answer: d) listed or approved for use in wet
locations and arranged to drain.
Reference: 225.22 and 230.53
2. Answer: quarter, ¼, or 90°
Reference: The answer can be found in most of
the raceway articles, such as 344.26
for rigid metal conduit.
3. Answer: 3.356
Reference: Chapter 9, Table 4. The cross-sec-
tional area is the total area (100%).
4. Answer: ¾
Reference: 344.28 and 346.28
5. Answer: c) I and II only
Reference: 380.12(5) and 380.76
6. Answer: 75%
Reference: 376.56(A) and 378.56
7. Answer: header
Reference: 374.2
8. Answer: 1¼
Reference: 300.4(A)(1)
9. Answer: 4
Reference: Table 348.22
10. Answer: 16
Reference: 342.30(B)(2) and Table 344.30(B)(2)
11. Answer: 20%
Reference: 376.22(A) and 378.22
12. Answer: induction
Reference: 300.20(A)
13. Answer: multioutlet assembly
Reference: Article 100 (Multioutlet Assembly)
14. Answer: galvanic action
Reference: 342.14 and 344.14
15. Answer: 10
Reference: Informative Annex C, Table C9
16. Answer: six (6)
Reference: 314.28(A)(2)
17. Answer: ¼
Reference: 300.6(D)
18. Answer: 6
Reference: 250.102(E)(2)
19. Answer: c) I and III only
Reference: 372.18(B)
20. Answer: 3
Reference: 362.30(A)
21. Answer: wet
Reference: Article 100 (Location, Wet)
22. Answer: b) shall be removed from the race-
way.
Reference: 390.8
23. Answer: corrosion protection
Reference: 344.10(B)(1)
24. Answer: 8 AWG
Reference: 310.106(C)
25. Answer: 180
Reference: Table 300.19(A)
26. Answer: 4 AWG
Reference: 300.4(G)
27. Answer: 3 ft
Reference: 378.30(A)
28. Answer: 10, 3
Reference: 342.30(B)(4)
29. Answer: 1.496 sq in. The cross- sectional
area is the total area (100%),
regardless of conductors.
Reference: Chapter 9, Table 4
30. Answer: equipment bonding jumpers
Reference: 250.98
31. Answer: 3
Reference: 344.30
32. Answer: 7
Reference: Table 352.30
33. Answer: 0.8
Reference: Chapter 9, Note 7
34. Answer: 30° (30 degrees)
Reference: 376.23(A) and 378.23(A)
35. Answer: 60
Reference: 310.15(B)(2)(c)
36. Answer: unobstructed
Reference: 376.56(B)(5)

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5
Section 2 ONE-FAMILY DWELLINGS
UNIT 6 COMPETENCY TEST
1. Answer: b) 20 ampere
Reference: Table 210.21(B)(3)
2. Answer: b) multiwire branch-circuits
Reference: 300.13(B)
3. Answer: 5½
Reference: 210.52 and 210.52(4)
4. Answer: 6
Reference: 300.14
5. Answer: b) must be the same size as the
insulated circuit conductors
Reference: Table 250.122
6. Answer: 15
Reference: 406.3(B)
7. Answer: 16
Reference: 410.30(A)
8. Answer: b) 25 amperes
Reference: 210.18
9. Answer: receptacle outlet
Reference: 210.50(A)
10. Answer: b) I and III only
Reference: 406.4(A)
11. Answer: 70
Reference: 314.27(C)
12. Answer: 18
Reference: 210.52(A)(3)
13. Answer: current, voltage, temperature
Reference: 410.52
14. Answer: 50
Reference: 314.27(A)(2)
15. Answer: 15 or 20
Reference: Table 210.21(B)(3)
16. Answer: individual
Reference: Article 100 (Branch-Circuit,
Individual)
17. Answer: 12
Reference: 210.52(A)(1)
18. Answer: c) II and III only
Reference: 406.4(D)(2)(c)
19. Answer: receptacle outlet
Reference: Article 100 (Receptacle Outlet)
20. Answer: d) 0.0 in.
Reference: 314.20
21. Answer: d) hallway
Reference: 210.70(A)(1) and (2)
22. Answer: 40 or 50
Reference: Table 210.21(B)(3)
23. Answer: grounded conductor
Reference: Article 100 (Grounded Conductor)
24. Answer: c) the circuit conductors between the
final overcurrent device protecting the
circuit and the outlet(s)
Reference: Article 100 (Branch-Circuit)
25. Answer: d) II or III only
Reference: 240.15(B) and (B)(1)

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6
UNIT 7 COMPETENCY TEST
1. Answer: 4. The maximum distance to a
receptacle is 2 ft
Reference: 210.52(C)(1)
2. Answer: 8
Reference: 410.10(D)
3. Answer: c) 15 or 20 amperes
Reference: Table 210.21(B)(3)
4. Answer: b) 10 AWG
Reference: 210.19(A)(3) Exception No. 2
5. Answer: 194
Reference: 410.11 and 410.115(A)
6. Answer: 2. A vehicle door in a garage is
not considered an outdoor entrance
or exit.
Reference: 210.70(A)(2)
7. Answer: clothes closets
Reference: 240.24(D)
8. Answer: b) 100%
Reference: 210.21(B)(1)
9. Answer: 6
Reference: 210.50(C)
10. Answer: 20
Reference: 210.19(A)(3) Exception No. 1
11. Answer: 9200; 4 + 5.5 + 5.5 = 15 kW.
Increase Column A by 15% (15 – 12
= 3 x 5% = 15%) 8 x 15% = 1.2
kW 8 + 1.2 = 9.2 kW 9.2 x 1000 =
9200 watts. (An answer of 9.2 is
incorrect because the answer should
be given in watts, not kW.)
Reference: Table 220.55, Note 4
12. Answer: 80
Reference: 210.23(A)(1)
13. Answer: 6
Reference: 410.16(C)(3)
14. Answer: 50
Reference: Article 100 (In Sight From)
15. Answer: one
Reference: 210.52(H)
16. Answer: c) I or II only
Reference: 422.31(B)
17. Answer: six
Reference: 210.70(A)(2)(3)
18. Answer: readily accessible
Reference: 240.10
19. Answer: 6.5. The cord must be between 3
and 6.5 ft for built-in dishwasher
cords.
Reference: 422.16(B)(2)(3)
20. Answer: b) I and II only. A receptacle in a
detached garage is required only if
the garage has electrical power.
Reference: 210.52(G)
21. Answer: d) I, II, or III
Reference: 210.52(B)(1) and
210.52(B)(1) Exception No. 2
22. Answer: c) II or III
Reference: The laundry circuit must be a 20-
ampere circuit [210.11(C)(2)]. A single
receptacle cannot exceed the rating
of the circuit [Article 100]. A duplex
receptacle rated 15 amperes is per-
mitted on a 20-ampere circuit [Table
210.21(B)(3)].
23. Answer: 3
Reference: 210.52(D)
24. Answer: 6
Reference: 210.52(C)(5) Exception
25. Answer: b) I or II only
Reference: 210.11(C)(3) and
210.11(C)(3) Exception
26. Answer: 20
Reference: 210.11(C)(4)
27. Answer: 22, 30
Reference: 110.26(A)(4)

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7
19. Answer: 2 AWG copper. Multiply the service
rating by 83 percent [310.15(B)(7)(1)]
125 × 83% = 103.75 = 104 amperes.
In accordance with the 75°C column
of Table 310.15(B)(16), the ampacity
of a 2 AWG copper conductor is 115
20. Answer:
amperes.
8 AWG copper
21. Answer: 4 AWG copper
UNIT 8 COMPETENCY TEST
1. Answer: 75, four
Reference: 220.53
2. Answer: 7092 volt-amperes. First, find the
total floor area of the house. Multiply
the dimensions of each floor and add
the two: 30 x 48 = 1440 sq ft (first
floor); 22 x 42 = 924 sq ft (second
floor); 1440 + 924 = 2364 total sq ft.
Next, multiply the total square ft by
three (3) volt-amperes per square
foot: 2364 x 3 = 7092 volt-amperes.
This house has a lighting demand
load of 7092 volt-amperes.
Reference: 220.12
3. Answer: None
Reference: 220.14(J)
4. Answer: 1500
Reference: 220.52(A)
5. Answer: d) 6.6 kW. The question is asking
for the service demand load, not
the branch

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1 General Lighting and Receptacle Loads 220.12
Do not include open porches, garages, or unused or 3 × = 1
unfinished spaces not adaptable for future use. (sq ft using outside dimensions)
2 Small-Appliance Branch-Circuits 220.52(A)
At least two small-appliance branch circuits 1500 × = 2
must be included. 210.11(C)(1) (minimum of two)
3 Laundry Branch Circuit(s) 220.52(B)
At least one laundry branch circuit 1500 × = 3
must be included. 210.11(C)(2) (minimum of one)
4 Add lines 1, 2, and 3 4 Lines 5 through 8 utilize the demand factors found in Table 220.42.
5 – 3000 = 5 6 – 117,000 = 6
(line 4) (if 117,000 or less, skip to line 8) (line 5, if more than 117,000)
7 × 25% = 7 8 × 35% = 8
(line 6) (smaller of line 5 or 117,000)
9 Total General Lighting and Receptacle Load 3000 + + = 9
(line 7) (line 8)
10 Fastened-In-Place Appliances 220.53
Use the nameplate rating.
Do not include electric ranges,
clothes dryers, space-heating
equipment, or air-conditioning
equipment.
If fewer than four units, put total volt-amperes on line 10. × 75% = 10
If four or more units, multiply total volt-amperes by 75%. (volt-amps of four or more)
11 Clothes Dryers 220.54
(If present; otherwise skip to line 12.) Use 5000 watts or the nameplate rating, whichever is larger. 11
The neutral demand load is 70% for feeders. 220.61(B)
12 Ranges, Ovens, Cooktops, and Other Household Cooking Appliances Over 1750 Watts 220.55
(If present; otherwise skip to line 13.) Use Table 220.55 and all of the applicable Notes. 12
The neutral demand load is 70% for feeders. 220.61(B)
13 Heating or Air-Conditioning System (Compare the heat and A/C, and omit the smaller.) 220.60
Include the air handler when using either one. For heat pumps, include the compressor and the 13
maximum amount of electric heat that can be energized while the compressor is running.
14 Largest Motor (one motor only) 220.50 and 430.24 × 25% =Multiply the volt-amperes of the largest motor by 25%. (volt-amps of largest motor)
14
15 Total Volt-Ampere Demand Load: Add lines 9 through 14 to find the minimum required volt-amperes. 15
16 Minimum Amperes
Divide the total 16 17 17volt-amperes by ÷ =
the voltage. (line 15) (voltage) (minimum amperes)
18 Size the Service or Feeder Conductors.
Use 310.15(B)(7) to find the service conductors up to 400 amperes.
Ratings in excess of 400 amperes shall comply with Table 310.15(B)(16). 18
310.15(B)(7) also applies to feeder conductors supplying the entire load.
19 Size the Neutral Conductor. 220.61
310.15(B)(7) states that the neutral service or feeder conductor
can be smaller than the ungrounded (hot) conductors, provided the
requirements of 215.2, 220.61, and 230.42 are met. 19
250.24(C)(1) states that the grounded conductor shall not be
smaller than specified in Table 250.102(C)(1).
20 Size the Grounding Electrode Conductor (for Service). 250.66
Use line 18 to find the grounding electrode conductor in Table 250.66.
Size the Equipment Grounding Conductor (for Feeder). 250.122 20
Use line 17 to find the equipment grounding conductor in Table 250.122.
Equipment grounding conductor types are listed in 250.118.
water heater /
compactor /
/
dishwasher /
/
/
disposer /
/
/
Minimum Size
Service or
Feeder 240.6(A)
Minimum Size
Conductors
Minimum Size
Neutral
Conductor
Minimum Size
Grounding
Electrode
Conductor
Standard Method Load Calculation for One-Family Dwellings
Unit 8 . . . Questions 13 through 16
2500
2
1
7500
12,000
12,000
9000
9000
----
----
4000 1500 828
----
3/50
3/50
6328
5000
8000
76/3
1610
34,701
150
1 copper
6 copper
6440
34,701 240 145
6/50
3000
1500

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