designing electrical systems vol 1

James Stallcup, Sr. has reinvented Designing Electrical Systems that catapulted him to the forefront of the electrical industry as a prominent author,  effective instructor, and respected authority on the application of the National Electrical Code®.

Everyone from engineers, electrical contractors, inspectors, electricians, and instructors of the Code have anticipated the arrival of this book.  The large workbook format allows a masterful blending of valuable Design Tips, NEC Loops, Examples, Quick Calcs,  and effective illustrations with authoritative Code references. Because of the abundant amount of detailed information included, it is the most comprehensive design book of its kind.    

Stallcup’s® Designing Electrical Systems explains the purpose of the National Electrical Code (NEC) and more particularly, its use as it applies to the design and installation of electrical wiring systems and equipment.

While the substance of design is found in the National Electrical Code, the art of the design is found in the applicability of that same National Electrical Code. With the advancement of today’s technology and ever-increasing liabilities, effective electrical design must now, more than ever, consider the use of certified products, energy conservation, economy vs. quality, anticipated load growth, local codes, special applications of electrical equipment, and the use and interpretation of the National Fire Protection Association (NFPA) and the Institute of Electrical and Electronics Engineers (IEEE) standards that relate to special areas, etc. For better understanding and interpretation of these advancements, considerable effort has been made by the author to condense the more complicated rules pertaining to the design, installation, and selection of wiring methods and equipment.

For the convenience of the reader, Designing Electrical Systems not only contains discussions and explanations of Code rules, but also includes detailed illustrations and sample calculations that will help tremendously in understanding and becoming proficient in the application of the National Electrical Code. Designing Electrical Systems also points out common industry problems and shows in detail the proper procedures and techniques to use in order to ensure proper code compliance. Design Tips, Calculation Tips, and guidelines for "rule of thumb" methods for instances where a fast and approximate design answer is needed are also provided. 

In order for the reader to measure his or her design skills or to prepare for a maintenance, journeyman or master electrician examination or for inspector certification, an ample number of quizzes, tests, and final examinations have been included.

With the wealth of information found in this book, it will make a valuable addition to the library of any consultant, serve as an excellent reference to the seasoned professional, and also provide valuable introductory material to the beginner.

• Chapter 1：APPLYING THE NEC (3 minutes and 38 seconds)

• Chapter 2：ADMINISTRATION AND ENFORCEMENT (6 minutes and 8 seconds)

• Chapter 3：INTRODUCTION AND CHAPTER 1 (5 minutes and 48 seconds)

• Chapter 4：CHAPTER 1 ARTICLE 100 (2 minutes and 17 seconds)

• Chapter 5：CHAPTER 1 ARTICLE 110 (4 minutes and 19 seconds)

• Chapter 6：CHAPTER 2 ARTICLES 200 – 285 (4 minutes and 40 seconds)

• Chapter 7：CHAPTER 2 ARTICLES 200 – 285 (3 minutes and 4 seconds)

• Chapter 8：CHAPTER 3 ARTICLES 300 – 399 (2 minutes and 17 seconds)

• Chapter 9：CHAPTER 4 ARTICLES 400 – 490 (4 minutes and 2 seconds)

• Chapter 10：CHAPTER 5 ARTICLES 500 – 590 (5 minutes and 15 seconds)

• Chapter 11：CHAPTER 6 ARTICLES 600 – 695 (2 minutes and 28 seconds)

• Chapter 12：CHAPTER 7 ARTICLES 700 – 770 (4 minutes and 14 seconds)

• Chapter 13：CHAPTER 8 ARTICLES 800 – 840 (2 minutes and 56 seconds)

• Chapter 14：CHAPTER 9 TABLES 1 – 12(B) (3 minutes and 32 seconds)

• Chapter 15：PURPOSE OF OSHA (2 minutes and 23 seconds)

• Chapter 16：APPLYING OSHA 1926, SUBPART K (4 minutes and 13 seconds)

• Chapter 17：APPLYING OSHA 1926, SUBPART V (1 minutes and 49 seconds)

• Chapter 18：APPLYING OSHA 1910, SUBPART R (2 minutes and 59 seconds)

• Chapter 19：PURPOSE OF NFPA 70E (4 minutes and 9 seconds)

• Chapter 20：PURPOSE OF NFPA 70B (2 minutes and 57 seconds)

• Chapter 21：PURPOSE OF NFPA 79 (2 minutes and 21 seconds)

• Chapter 22：PURPOSE OF THE NESC (3 minutes and 28 seconds)

• Chapter 23：PURPOSE OF THIRD-PARTY CERTIFICATION (4 minutes and 5 seconds)

• Chapter 24：UL WHITE BOOK (Now Electronic) (1 minutes and 47 seconds)

• Chapter 25：APPROVAL (2 minutes and 36 seconds)

• Chapter 26：EXAMINATION, INSTALLATION, AND USE OF EQUIPMENT (6 minutes and 44 seconds)

• Chapter 27：INSTALLING AND MAINTAINING ELECTRICAL EQUIPMENT (2 minutes and 31 seconds)

• Chapter 28：AUTHORITY HAVING JURISDICTION (3 minutes and 14 seconds)

• Chapter 29：Retrofit Kit (2 minutes and 17 seconds)

• Chapter 30：HEART COMPRESSION (6 minutes and 9 seconds)

• Chapter 31：HEAD PROTECTION (2 minutes and 35 seconds)

• Chapter 32：HARD HATS (2 minutes and 4 seconds)

• Chapter 33：FACTOR IN PROTECTION (2 minutes and 4 seconds)

• Chapter 34：HAND AND ARM PROTECTION (3 minutes and 12 seconds)

• Chapter 35：FOOT AND LEG PROTECTION (2 minutes and 2 seconds)

• Chapter 36： (a) OVERALL PROTECTION (3 minutes and 6 seconds)

• Chapter 37：(b) OVERALL PROTECTION (2 minutes and 29 seconds)

• Chapter 38：120 V, SINGLE-PHASE, TWO-WIRE SYSTEMS (6 minutes and 37 seconds)

• Chapter 39：208_120 V, SINGLE-PHASE, THREE-WIRE SYSTEMS (4 minutes and 21 seconds)

• Chapter 40：240_120 V, SINGLE-PHASE, THREE-WIRE SYSTEMS (7 minutes and 49 seconds)

• Chapter 41：208_120 V, THREE-PHASE (4 minutes and 41 seconds)

• Chapter 42：240_120 V, THREE-PHASE (4 minutes and 19 seconds)

• Chapter 43：OPEN-DELTA SYSTEMS​​​​​​​ (4 minutes and 37 seconds)

• Chapter 44：480_277 V, THREE-PHASE, - FOUR-WIRE SYSTEMS (9 minutes and 52 seconds)

• Chapter 45：SYSTEMS OF 4160 VOLTS (3 minutes and 48 seconds)

• Chapter 46：SYSTEMS OF 13,800 VOLTS (4 minutes and 20 seconds)

• Chapter 47：CONDUCTORS - 720.4 (2 minutes and 24 seconds)

• Chapter 48：LAMPHOLDERS - 720.5 (2 minutes and 33 seconds)

• Chapter 49：RECEPTACLES - 720.6 AND 720.7 (3 minutes and 16 seconds)

• Chapter 50：BATTERIES - 720.9 (3 minutes and 39 seconds)

• Chapter 51：CLASS 1 CIRCUIT CLASSIFICATIONS AND POWER SOURCE REQUIREMENTS - 725.41(A) AND (B) (5 minutes and 43 seconds)

• Chapter 52：CONDUCTORS OF DIFFERENT CIRCUITS - 725.48(A) AND (B) AND 300.3(C)(1) (3 minutes and 9 seconds)

• Chapter 53：NUMBER OF CONDUCTORS - 725.51(A), (B), AND (C) (7 minutes and 9 seconds)

• Chapter 54：POWER SOURCES FOR CLASS 2 AND 3 CIRCUITS - 725.121(A), (B), AND (C) (3 minutes and 52 seconds)

• Chapter 55：NONPOWER-LIMITED FIRE ALARM(NPLFA) CIRCUITS - 760.2 (3 minutes and 50 seconds)

• Chapter 56：POWER-LIMITED FIRE ALARM (PLFA) CIRCUIT - 760.2 AND 760.154 (2 minutes and 46 seconds)

• Chapter 57：INTRINSICALLY SAFE SYSTEM - ARTICLE 100, PART III AND 504.2 (4 minutes and 2 seconds)

• Chapter 58：EQUIPMENT - 504.4 (4 minutes and 22 seconds)

• Chapter 59：CONTROL DRAWING - 504.10(A) AND ARTICLE 100, Part III (3 minutes and 0 seconds)

• Chapter 60：IN RACEWAYS, CABLE TRAYS, AND CABLES - 504.30(A)(1) (1 minutes and 47 seconds)

• Chapter 61：WITHIN ENCLOSURES - 504.30(A)(2) (1 minutes and 40 seconds)

• Chapter 62：OTHER (NOT IN RACEWAY OR CABLE TRAY SYSTEM) - 504.30(A)(3) (1 minutes and 31 seconds)

• Chapter 63：FROM DIFFERENT INTRINSICALLY SAFE CIRCUIT CONDUCTORS - 504.30(B)(1) AND (B)(2) (2 minutes and 40 seconds)

• Chapter 64：COLOR CODING - 504.80(C) (1 minutes and 32 seconds)

• Chapter 65：GROUNDING - 504.50(A) AND (B) (4 minutes and 19 seconds)

• Chapter 66：BONDING - 504.60(A) AND (B) (3 minutes and 57 seconds)

• Chapter 67：WIRING METHODS AND ENCLOSURES (RECOMMENDED REQUIREMENTS) (2 minutes and 56 seconds)

• Chapter 68：WIRING (RECOMMENDED REQUIREMENTS)​​​​​​​ (3 minutes and 19 seconds)

• Chapter 69：COLOR CODING (RECOMMENDED REQUIREMENTS) (1 minutes and 48 seconds)

• Chapter 70：LIGHTING SYSTEMS OPERATING AT 30 VOLTS OR LESS - 411.3 (3 minutes and 13 seconds)

• Chapter 71：LISTING REQUIRED - 411.4(A) AND (B) (1 minutes and 52 seconds)

• Chapter 72：SPECIFIC LOCATION REQUIREMENTS - 411.5(A) AND (B)​​​​​​​ (2 minutes and 2 seconds)

• Chapter 73：SECONDARY CIRCUITS - 411.6(A) THRU (C) (2 minutes and 18 seconds)

• Chapter 74：BRANCH CIRCUIT - 411.7 (3 minutes and 15 seconds)

• Chapter 75：SPACES ABOUT ELECTRICAL EQUIPMENT - 110.26(A)(1) THRU (A)(4) (1 minutes and 17 seconds)

• Chapter 76：DEPTH OF WORKING SPACE - 110.26(A)(1), AND TABLE 110.26(A)(1), CONDITION 1 (3 minutes and 52 seconds)

• Chapter 77：DEPTH OF WORKING SPACE - 110.26(A)(1) AND TABLE 110.26(A)(1), CONDITION 2​​​​​​​ (5 minutes and 23 seconds)

• Chapter 78：DEPTH OF WORKING SPACE - 110.26(A)(1) AND TABLE 110.26(A)(1), CONDITION 2​​​​​​​ (5 minutes and 24 seconds)

• Chapter 79：DEPTH OF WORKING SPACE - 110.26(A)(1) AND TABLE 110.26(A)(1), CONDITION 3 (4 minutes and 14 seconds)

• Chapter 80：EXISTING BUILDINGS - 110.26(A)(1)(c) (1 minutes and 35 seconds)

• Chapter 81：HEIGHT OF WORKING SPACE - 110.26(A)(3) (2 minutes and 43 seconds)

• Chapter 82：DEDICATED ELECTRICAL SPACE - 110.26(E)(1)(a) (3 minutes and 30 seconds)

• Chapter 83：ENTRANCE TO AND EGRESS FROM WORKING SPACE - 110.26(C)(1) AND (C)(2) (7 minutes and 0 seconds)

• Chapter 84：LARGE EQUIPMENT - 110.26(C)(2)​​​​​​​ (6 minutes and 3 seconds)

• Chapter 85：ILLUMINATION - 110.26(D) (2 minutes and 11 seconds)

• Chapter 86：DEDICATED ELECTRICAL SPACE - 110.26(E)(1)(a) (4 minutes and 48 seconds)

• Chapter 87：CLEAR SPACES - 110.26(B) (3 minutes and 39 seconds)

• Chapter 88：FOREIGN SYSTEMS - 110.26(E)(1)(b) (2 minutes and 42 seconds)

• Chapter 89：LIVE PARTS GUARDED AGAINST ACCIDENTAL CONTACT - 110.27(A) (4 minutes and 5 seconds)

• Chapter 90：LIVE PARTS GUARDED AGAINST ACCIDENTAL CONTACT - 110.27(A) (2 minutes and 7 seconds)

• Chapter 91：PREVENT PHYSICAL DAMAGE - 110.27(B) (2 minutes and 15 seconds)

• Chapter 92：WARNING SIGNS - 110.27(C) (3 minutes and 33 seconds)

• Chapter 93：ENTRANCE TO ENCLOSURES AND ACCESS TO WORKING SPACE (OVER 1000 V) - 110.33 (3 minutes and 23 seconds)

• Chapter 94：ACCESS - 110.33(B) (2 minutes and 43 seconds)

• Chapter 95：ENCLOSURE FOR ELECTRICAL INSTALLATIONS - 110.31 (6 minutes and 46 seconds)

• Chapter 96：ELECTRICAL VAULTS - 110.31(A) (6 minutes and 23 seconds)

• Chapter 97：INDOOR INSTALLATIONS - 110.31(B) (2 minutes and 23 seconds)

• Chapter 98：OUTDOOR INSTALLATIONS - 110.31(C) (1 minutes and 40 seconds)

• Chapter 99：ENCLOSED EQUIPMENT ACCESSIBLE TO UNQUALIFIED PERSONS - 110.31(D) (3 minutes and 1 seconds)

• Chapter 100：WORKSPACE ABOUT EQUIPMENT - 110.32 (3 minutes and 25 seconds)

• Chapter 101：ENTRANCE TO ENCLOSURES AND ACCESS TO WORKING SPACE - 110.33 (6 minutes and 16 seconds)

• Chapter 102：PERSONNEL DOORS - 110.33(A)(3) (1 minutes and 40 seconds)

• Chapter 103：ACCESS - 110.33(B) (1 minutes and 33 seconds)

• Chapter 104：ILLUMINATION - 110.34(D) (2 minutes and 50 seconds)

• Chapter 105：ELEVATION OF UNGUARDED LIVE PARTS - 110.34(E) AND TABLE 110.34(E) (2 minutes and 0 seconds)

• Chapter 106：IDENTIFICATION OF DISCONNECTING MEANS - 110.22 (5 minutes and 20 seconds)

• Chapter 107：ARC-FLASH HAZARD WARNING - 110.16(B), INs 1 AND 3 (4 minutes and 32 seconds)

• Chapter 108：ARC-FLASH HAZARD WARNING - 110.16(B), INs 1 AND 3 (6 minutes and 40 seconds)

• Chapter 109：AVAILABLE FAULT CURRENT - 110.24(A) AND (B)​​​​​​​ (3 minutes and 8 seconds)

• Chapter 110：FIELD-APPLIED MARKINGS - 110.21(B) (4 minutes and 36 seconds)

• Chapter 111：FIELD MARKING - 110.24(A) (5 minutes and 33 seconds)

• Chapter 112：FIRE PUMPS - 230.2(A)(1) (4 minutes and 34 seconds)

• Chapter 113：EMERGENCY SYSTEMS - 230.2(A)(2) (3 minutes and 0 seconds)

• Chapter 114：SPECIAL OCCUPANCIES - 230.2(B)(1) (3 minutes and 20 seconds)

• Chapter 115：DIFFERENT CHARACTERISTICS - 230.2(D) (3 minutes and 17 seconds)

• Chapter 116：BUILDINGS COVERING A LARGE AREA - 230.2(B)(2) (3 minutes and 29 seconds)

• Chapter 117：CAPACITY REQUIREMENTS - 230.2(C)(1) AND (C)(2) (3 minutes and 52 seconds)

• Chapter 118：UNDERGROUND SETS OF CONDUCTORS - 230.2 (4 minutes and 59 seconds)

• Chapter 119：CONDUCTORS CONSIDERED OUTSIDE THE BUILDING - 230.6 (5 minutes and 52 seconds)

• Chapter 120：OTHER CONDUCTORS IN RACEWAY OR CABLE - 230.7 (6 minutes and 27 seconds)

• Chapter 121：(a) CLEARANCE FROM BUILDING OPENINGS - 230.9(C) (3 minutes and 12 seconds)

• Chapter 122： (b) CLEARANCE FROM BUILDING OPENINGS - 230.9(C) (3 minutes and 13 seconds)

• Chapter 123：VEGETATION AS SUPPORT - 230.10​​​​​​​ (3 minutes and 14 seconds)

• Chapter 124：(a) INSULATION OR COVERING - 230.22 (5 minutes and 6 seconds)

• Chapter 125：(b) INSULATION OR COVERING - 230.22 Ex (3 minutes and 52 seconds)

• Chapter 126： (a) ROOFS SUBJECT TO PEDESTRIAN OR VEHICULAR TRAFFIC - 230.24(A), Ex. 1 (4 minutes and 41 seconds)

• Chapter 127：(b) VOLTAGE NOT EXCEEDING 300 VOLTS - 230.24(A), Ex. 2 (3 minutes and 22 seconds)

• Chapter 128：(c) OVERHANGING PORTION OF THE ROOF - 230.24(A), Ex. 3​​​​​​​ (3 minutes and 0 seconds)

• Chapter 129：VERTICAL CLEARANCE FOR OVERHEAD SERVICE CONDUCTORS - 230.24(B) (5 minutes and 30 seconds)

• Chapter 130：(a) MEANS OF ATTACHMENT - 230.27 (1 minutes and 59 seconds)

• Chapter 131：(b) MEANS OF ATTACHMENT - 230.27 (2 minutes and 17 seconds)

• Chapter 132：(c) MEANS OF ATTACHMENT - 230.27 (2 minutes and 39 seconds)

• Chapter 133：UNDERGROUND SERVICE CONDUCTORS - ARTICLE 230, PART III (7 minutes and 24 seconds)

• Chapter 134：6-18 (3 minutes and 19 seconds)

• Chapter 135：SIZE AND RATING - 230.31(A) AND (B) (2 minutes and 45 seconds)

• Chapter 136：SIZE AND RATING - 230.42(A) THRU (C) (7 minutes and 5 seconds)

• Chapter 137：SPLICED AND TAPPED CONDUCTORS - 230.46 (1 minutes and 31 seconds)

• Chapter 138：SPLICED AND TAPPED CONDUCTORS - 230.46 (5 minutes and 19 seconds)

• Chapter 139：SPLICED AND TAPPED CONDUCTORS - 230.46​​​​​​​ (2 minutes and 20 seconds)

• Chapter 140：SPLICED AND TAPPED CONDUCTORS - 230.46 (2 minutes and 47 seconds)

• Chapter 141：SPLICED AND TAPPED CONDUCTORS - 230.46 (5 minutes and 22 seconds)

• Chapter 142：SERVICE-ENTRANCE CABLES - 230.51(A) (3 minutes and 34 seconds)

• Chapter 143：INDIVIDUAL OPEN CONDUCTORS - 230.51(C) (3 minutes and 22 seconds)

• Chapter 144：INDIVIDUAL CONDUCTORS ENTERING BUILDINGS OR OTHER STRUCTURES - 230.52​​​​​​​ (1 minutes and 47 seconds)

• Chapter 145：RACEWAYS TO DRAIN - 230.53 (1 minutes and 14 seconds)

• Chapter 146：SERVICE-ENTRANCE CABLES EQUIPPED WITH SERVICE HEAD OR GOOSENECK - 230.54(B) (2 minutes and 35 seconds)

• Chapter 147：(a) SERVICE HEADS AND GOOSENECKS ABOVE SERVICE-DROP OR OVERHEAD SERVICE ATTACHMENT - 230.54(C) (3 minutes and 11 seconds)

• Chapter 148：(b) ERVICE HEADS AND GOOSENECKS ABOVE SERVICE-DROP OR OVERHEAD SERVICE ATTACHMENT - 230.54(C) (2 minutes and 33 seconds)

• Chapter 149：SERVICE CONDUCTOR WITH THE HIGHER VOLTAGE-TO-GROUND - 230.56 (4 minutes and 48 seconds)

• Chapter 150：(a) AVAILABLE SHORT-CIRCUIT CURRENT - 110.9, 110.10, AND 230.24 (5 minutes and 19 seconds)

• Chapter 151：(b) AVAILABLE SHORT-CIRCUIT CURRENT - 110.9, 110.10, AND 230.24 (6 minutes and 25 seconds)

• Chapter 152：(c) AVAILABLE SHORT-CIRCUIT CURRENT - 110.9, 110.10, AND 230.24 (6 minutes and 13 seconds)

• Chapter 153：LOCATION - 230.70(A) (5 minutes and 34 seconds)

• Chapter 154：MAXIMUM NUMBER OF DISCONNECTS - 230.71(A) AND (B)(1) THRU (B)(4) (4 minutes and 44 seconds)

• Chapter 155：GROUPING OF DISCONNECTS - 230.72 (3 minutes and 2 seconds)

• Chapter 156：SIMULTANEOUS OPENING OF POLES - 230.74 (4 minutes and 57 seconds)

• Chapter 157：DISCONNECTION OF GROUNDED CONDUCTOR - 230.75 (5 minutes and 8 seconds)

• Chapter 158：TRANSFER EQUIPMENT RATED AS SERVICE EQUIPMENT (7 minutes and 33 seconds)

• Chapter 159：NUMBER OF SUPPLIES - 225.30​​​​​​​ (6 minutes and 50 seconds)

• Chapter 160：MOTORS - 230.90(A), Ex. 1 (7 minutes and 15 seconds)

• Chapter 161：FUSES AND CIRCUIT BREAKERS - 230.90(A), Ex. 2 (3 minutes and 19 seconds)

• Chapter 162：SIX CIRCUIT BREAKERS OR SIX SETS OF FUSES - 230.90(A), Ex. 3 (6 minutes and 54 seconds)

• Chapter 163：FIRE PUMPS - 230.90(A), Ex. 4 (3 minutes and 29 seconds)

• Chapter 164：NEC 310.12(A) THRU (D) TO AMPACITY TABLES OF 0 – 2000 VOLTS - 230.90(A), Ex. 5 (4 minutes and 36 seconds)

• Chapter 165：UNDER SINGLE MANAGEMENT - 225.32, Ex. 1 (8 minutes and 29 seconds)

• Chapter 166：SERVICE AND FEEDER OVERCURRENT DEVICES - 240.24(B)(1) (2 minutes and 35 seconds)

• Chapter 167：PROTECTION OF SPECIFIC CIRCUITS - 230.93 (2 minutes and 36 seconds)

• Chapter 168：(a) GROUND-FAULT PROTECTION OF EQUIPMENT - 230.95 (6 minutes and 12 seconds)

• Chapter 169： (b) GROUND-FAULT PROTECTION OF EQUIPMENT - 230.95 (5 minutes and 34 seconds)

• Chapter 170：SERVICE POINT - ARTICLE 100 (3 minutes and 36 seconds)

• Chapter 171：CLASSIFICATION - ARTICLE 100, PART II​​​​​​​ (1 minutes and 27 seconds)

• Chapter 172：LOCKED ROOMS OR ENCLOSURES - 110.34(C) (5 minutes and 6 seconds)

• Chapter 173：ISOLATING SWITCHES - 230.204​​​​​​​ (3 minutes and 27 seconds)

• Chapter 174：(a) PROTECTION REQUIREMENTS - 230.208 (2 minutes and 17 seconds)

• Chapter 175：(b) PROTECTION REQUIREMENTS - 230.208​​​​​​​ (2 minutes and 30 seconds)

• Chapter 176：OVERCURRENT PROTECTION AND REQUIREMENTS FOR FEEDER CONDUCTORS - 240.100 AND 240.101 (3 minutes and 17 seconds)

• Chapter 177：ELECTRICAL SERVICE AREAS - 210.63(B)(1) (2 minutes and 52 seconds)