| Acid fumes |
10 (c) & 24 (i) to 24 (k) |
| Arc lamps, Construction of |
57 |
| Arc lamps, location requirements |
19 (c) & 29 (c) |
| Arc lamps on constant-current systems |
19 |
| Arc lamps on constant-potential systems |
29 |
| Armored Cable, Construction of |
24 A (d) & 48 |
| Armored Cable, Installation of |
24 (s) & 24 A |
| Armored Cable, Metallic sheaths to be grounded |
12 (i) & 24 A (c) |
| Attendance |
6 |
| Balancing coils on three-wire systems |
(See Reactive Coils.) |
| Base-frames for generators and motors |
1 (c) & 8 (a) |
| Batteries, Storage and primary |
10 |
| Bell wires |
64 |
| Binding screws not to bear strain |
28 (g) |
| Blocks at fixture and switch outlets |
22 (e) |
| Bonds required on rails in car houses |
33 (g) |
| Boxing for wires. |
(See Protection for Wires.) |
| Burglar alarms |
64 |
| Burrs and fins in fixtures |
26 (b) |
| Bus-bars |
2 (b) & 3 (e) |
| Bushings at entrances to buildings |
12 (g) & 64 (e) |
| Bushings for lamp sockets |
28 (f) & 55 (q) |
| Bushings for wires, Construction of |
50 A |
| Bushings inside of buildings |
14 (d) |
| Cabinets, cut-out and switch, Construction |
17 (d), 24 (a) & 54 |
| Cabinets, cut-out and switch, Use |
17 (b) to 17 (d), 21 (c) & 22 (b) |
| Cabinets for rheostats and auto-starters, where required |
8 (d) |
| Cable, Armored |
(See Armored Cable.) |
| Car houses |
33 |
| Car wiring and equipment |
32 |
| Care and attendance |
6 |
| Carrying capacity of wires, Table of |
16 |
| Ceiling rosettes, Construction of |
54 A |
| Ceiling rosettes, Use of |
21 (d) |
| Central stations |
1 to 7 |
| Circuit-breakers, Construction of |
52 (a), 52 (d) & 52 (e) |
| Circuit-breakers, how high may be set |
21 (e) |
| Circuit-breakers, Installation of |
17 & 21 |
| Circuit-breakers, where required |
8 (d) & 9 |
| Cleats, Construction of |
50 B |
| Compensator coils for arc lamps |
30 |
| Compensator coils for three-wire systems |
(See Reactive Coils.) |
| Concealed "knob and tube" work |
24 (q) to 24 (u) |
| Concentric wire |
47 (c) |
| Condensers |
61 (b) |
| Conductors |
(See Wires.) |
| Conduit wire, Construction of |
47 |
| Conduit wiring |
24 (n) to 24 (p) |
| Conduits, metal, Construction of |
49 |
| Conduits, metal, Installation of |
23 |
| Constant-current systems |
18 to 20 |
| Constant-potential systems, general rules |
21 to 23 |
| Converters. |
(See Transformers.) |
| Crossing of constant-potential pole-lines, over 5,000 volts |
12 A (d) |
| Cut-outs, Construction of, open link fuse |
52 (f) to 52 (l) |
| Cut-outs, Construction of, enclosed fuse |
52 (m) to 52 (s) |
| Cut-outs, Installation of |
17 & 21 |
| Cut-outs must protect all wires of the circuit |
17 (a) |
| Cut-outs, Number of lights allowed to one |
21 (d) & 31 (a) |
| Cut-outs, where required |
1 (d), 2 (d), 8 (c), 21 (a), 21 (b) & 29 (a) |
| Damp places |
14 (f), 17 (c), 24 (i) to 24 (k) & 27 (b) |
| Decorative series incandescent lamps |
31 |
| Distance between conductors, inside work |
18 (d), 24 (h), 24 (j), 24 (r) & 35 (c) |
| Distance between conductors, outside work |
12 (b), 12 A (c) & 12 A (d) (2) |
| Drip loops at entrances to buildings |
12 (g) & 64 (d) |
| Dynamo rooms |
1 to 7 |
| Economy coils for arc lamps |
30 |
| Electric gas lighting |
65 |
| Electric heaters |
23 |
| Electrolytic corrosion of underground metal work |
12 (n) |
| Electro-magnetic devices for switches not approved |
20 (c) |
| Emergency switches |
note to 22 (a) |
| Enclosed arc lamps |
19 (c) & 29 (c) |
| Equalizers, Installation of |
4 |
| Extra-high constant-potential systems |
38 & 39 |
| Fan motors hung from ceilings |
8 (g) |
| Feeders, Railway |
33 (f) |
| Fished wires |
24 (c) & 24 (s) |
| Fittings, List of approved |
(See inside of front cover.) |
| Fittings, materials and details of construction |
40 to 63 |
| Fixture canopies |
24 (w) and 26 (a) |
| Fixtures |
26 |
| Fixture wire |
46 |
| Fixture wiring |
24 (v) to 24 (y) |
| Flexible cord, Construction of, general rule |
45 (a) |
| Flexible cord for heating apparatus, Construction of |
45 (g) |
| Flexible cord for pendant lamps, Construction of |
45 (b) to 45 (e) |
| Flexible cord for portable use, Construction of |
45 (f) |
| Flexible cord, Use of |
28 |
| Flexible tubing, Construction of |
50 C |
| Flexible tubing, where permitted |
14 (d), 24 (s) & 24 (u) |
| Foreign currents, Protection against |
64 |
| Formula for soldering fluid |
67 |
| Fuses, Construction of, enclosed |
53 (d) to 53 (k) |
| Fuses, Construction of, open link type |
53 (a) to 53 (c) |
| Fuses, Installation of |
1 (d), 17 & 21 |
| Gas lighting, Electric |
65 |
| General plan of arrangement of rules |
page 3 |
| General suggestions for electric work |
page 4 |
| Generators |
1 |
| Ground connections for lightning arresters |
5 (c) & 64 (l) |
| Ground connections for low-potential circuits |
13 A, (c) to (g) |
| Ground detectors, where required |
7 (a) |
| Ground plates, construction of |
13 A, (g) |
| Ground return wires, trolley systems |
12 (n) |
| Grounded trolley circuits, Light and power from |
34 |
| Grounding dynamo and motor frames |
1 (c) & 8 (a) |
| Grounding interior conduits |
25 (f) |
| Grounding low-potential circuits |
13 A |
| Grounding sheaths of cables |
12 (i) |
| Grounds, Testing for |
7 |
| Guard irons or wires, Use of |
12 (d), 12 (m), 12 A, (d) |
| Guard strings, inside work, where required |
18 (e), & 24 (e) |
| Hanger-boards, Construction of |
56 |
| Heaters, Electric |
23 |
| High constant-potential systems |
35 to 37 |
| Incandescent lamps as resistances |
4 (b) & 29 (b) |
| Incandescent lamps in series |
20, 21 (d), 31 & 37 |
| Incandescent lamps, where inflammable gases exist |
27 (a) |
| Induction coils |
(See Reactive Coils.) |
| Inside work |
14 to 39 |
| Insulated platforms, at high-potential machines |
1 (c) & 8 (a) |
| Insulating joints, Construction of |
59 |
| Insulating joints, when required |
26 (a) |
| Insulation of fixture canopies, when required |
26 (a) |
| Insulation of trolley wires |
12 (k) |
| Insulation resistance of completed systems |
66 |
| Insulator spacing, inside work |
24 (h), 24 (j), 24 (r) & 35 (c) |
| Joint pole crossing, high-pressure line |
12 A (d), (2) |
| Joints, in conductors |
12 (f) & 14 (c) |
| Junction boxes, Conduit, installation of |
24 A (f) & 25 (g) |
| Knob and tube work |
24 (q) to 24 (u) |
| Knots in flexible cord, required in sockets and rosettes |
28 (g) |
| Lamps |
(See Arc Lamps and Incandescent Lamps.) |
| Lighting and power from railway wires |
34 |
| Lightning arresters, Construction of |
63 |
| Lightning arresters, Installation of |
5 |
| Low constant-potential systems |
24 to 34 |
| Lugs for terminal connections, when required |
14 (c), 51 (h), 52 (i), 52 (p) & 60 (c) |
| Marine work |
68 to 83 |
| Motor enclosures |
8 (f) |
| Motor equipments, 550 volt, voltage allowed at generator or transformer |
note before 24 |
| Motors |
8 |
| Moulding, Construction of |
50 |
| Moulding, on brick walls |
24 (m) |
| Moulding, Wires in |
24 (l) & 24 (m) |
| Moving picture machines, Construction of |
65 A |
| Multiple-series systems, when permitted |
8 (e), 20 (c) & 29 (a) |
| Oily waste |
6 (b) |
| Open wiring |
24 (g) to 24 (k) |
| Outlet and switch boxes, Construction of |
49 A |
| Outlet boxes or plates, Conduit, when required |
24 A (b) & 25 (d) |
| Outside work |
12, 12 A, 13, 13 A & 64 |
| Panel boards, Construction of |
53 A |
| Pendants for use in hazardous places |
28 (d) |
| Pipe-hangers for incandescent lamps |
27 (a) |
| Pole-lines, Constant-potential, over 5,000 volts |
12 A |
| Pole-lines, High-pressure, near buildings |
12 A (e) |
| Portable heaters, conductors for |
45 (g) |
| Portable lamps, Installation of |
28 (d) |
| Portable lamps, motors, etc., conductors for |
45 (f) |
| Power, transformer and switch stations |
1 to 7 |
| Protection for gas outlet pipes |
26 (a) |
| Protection for motor equipments |
8 (d) |
| Protection for outlet wires |
24 (u) & 26 (a) |
| Protection for wires on side walls or columns |
18 (e), 24 (e) & 35 (d) |
| Protective devices on signal circuits, Construction of |
64 (m) |
| Protective devices on signal circuits, Installation of |
64 (g) to 64 (j) |
| Railway power plants |
9 |
| Railway wires |
(See Trolley Wires.) |
| Reactive coils |
61 (a) |
| Resistance boxes |
(See Rheostats.) |
| Resistances used with constant-potential arc lamps |
29 (b) |
| Rheostats, Construction of |
60 |
| Rheostats, Installation of |
4, 8 (c) & 8 (d) |
| Roof wiring |
12 |
| Rosettes, Construction of |
54 A |
| Rosettes, Use of |
21 (d) |
| Running-boards, Construction of |
18 (e) |
| Running-boards, where required |
18 (e), 24 (e) & 35 (d) |
| Screen of wires, at cross-over in high-pressure pole line, over 5,000 volts |
12 A (d) (3) |
| Series arc lamps |
19 |
| Series incandescent lamps |
20, 31, & 37 |
| Series-multiple systems, when permitted |
8 (e) & 20 (c) |
| Service wires, Underground |
15 (a), 15 (c), 15 (d) |
| Signaling systems |
64 |
| Sockets, Construction of |
55 |
| Sockets, Installation of |
27 |
| Soldering fluid, Formula for |
67 |
| Soldering stranded wires |
14 (c) & 19 (d) |
| Spark arresters, Construction of |
58 |
| Spark arresters, when required |
19 (c) & 29 (c) |
| Static electricity, due to belt friction |
1 (c) & 8 (a) |
| Stations and dynamo rooms |
1 to 7 |
| Stiff pendants for incandescent lamps |
27 (a) |
| Storage battery rooms |
10 |
| Strips for protecting inside wires |
(See Guard Strips) |
| Switchboards |
3 |
| Switch boxes, Conduit, Construction of |
49 A |
| Switches, Construction of knife |
51 (c) to 51 (k) |
| Switches, Construction of, snap |
51 (l) to 51 (t) |
| Switches, Electro-magnetic, not approved |
20 (c) |
| Switches, Emergency |
note to 22 (a) |
| Switches, Flush, Installation of |
22 (d) |
| Switches for constant-current systems |
18 (b) & 51 (b) |
| Switches in damp places |
17 (c) |
| Switches, Indicating, when required |
8 (c), 23 (b), 51 (a) & 51 (b) |
| Switches, Installation of |
17 & 22 |
| Switches must disconnect all wires of circuit |
17 (a) |
| Switches, Service |
18 (b), 22 (a) & 51 (a) |
| Switches, Single-pole, when permitted |
8 (c) & 22 (c) |
| Switches, Snap, when preferred |
22 (b) |
| Switches, Time |
17 (d) |
| Systems, Constant-current |
18 to 20 |
| Systems, Constant-potential, general rules |
21 to 23 |
| Systems, Extra-high constant potential |
38 & 39 |
| Systems, High constant-potential |
35 to 37 |
| Systems, Low constant-potential |
24 to 34 |
| Systems, Multiple-series |
8 (e) & 20 (c) |
| Systems, Series-multiple |
8 (e) & 20 (c) |
| Systems, Signaling |
64 |
| Tablet boards, Construction of |
53 A |
| Telegraph, telephone and signaling circuits |
64 |
| Testing for grounds |
7 |
| Testing for insulation resistance of completed systems |
66 |
| Three-pole cross-over for high-pressure line |
12 A (d-1) |
| Tie wires |
12 (a) & 14 (b) |
| Tinning of wires, when required |
41 (a) & 46 (b) |
| Transformers, Construction of |
62 |
| Transformers, grounding of secondaries |
13 A |
| Transformers, Installation of, inside |
11 & 36 |
| Transformers, Installation of, outside |
12 |
| Transformer stations |
1 to 7 |
| Transmission lines, constant-potential, over 5,000 volts |
12 A |
| Trolley circuits, Grounded, Light and power from |
34 |
| Trolley wires |
12 (j) to 12 (m) |
| Tubes, Insulating |
(See Bushings.) |
| Tubing, Flexible |
(See Flexible Tubing.) |
| Voltmeter, Switchboard, circuit for |
2 (d) |
| Waste, oily |
6 (b) |
| Waterproof construction |
24 (i) to 24 (k) |
| Waterproof pendants |
27 (b) |
| Wire, Concentric |
47 (c) |
| Wire, Conduit |
47 |
| Wire, Construction of, general rules |
46 |
| Wire, Fixture |
46 |
| Wire, Netting required on arc lamps |
19(c) & 29 (c) |
| Wire, Rubber-covered |
41 |
| Wire, Slow-burning |
43 |
| Wire, Slow-burning, weatherproof |
42 |
| Wire, Weatherproof |
44 |
| Wires, Carrying capacity table |
16 |
| Wires, Car Work |
32 |
| Wires, Concealed "knob and tube" work |
24 (q) to 24 (u) |
| Wires, Conduit work |
24 (n) to 24 (p) |