Establishments primarily engaged in the wholesale distribution of electrical power equipment for the generation, transmission, distribution, or control of electric energy; electrical construction materials for outside power transmission lines and for electrical systems; and electric light fixtures and bulbs. Construction contractors primarily engaged in installing electrical systems and equipment from their own stock are classified in Construction, Industry 1731.
| Alarm signal systems—wholesale | Motors, electric—wholesale |
| Batteries, except automotive—wholesale | Panelboards—wholesale |
| Boxes and fittings, electrical—wholesale | Pole line hardware—wholesale |
| Bus bars and trolley ducts—wholesale | Power transmission equipment, electric—wholesale |
| Cable conduit—wholesale | Receptacles, electrical—wholesale |
| Capacitors, except electronic—wholesale | Relays—wholesale |
| Circuit breakers—wholesale | Safety switches—wholesale |
| Coaxial cable—wholesale | Service entrance equipment, electrical—wholesale |
| Conduits and raceways—wholesale | Signaling equipment, electrical—wholesale |
| Construction materials, electrical: interior and exterior—wholesale | Storage batteries, industrial—wholesale |
| Distribution equipment, electrical—wholesale | Switchboards, electrical distribution—wholesale |
| Flashlights—wholesale | Switches, except electronic—wholesale |
| Fuses and accessories—wholesale | Switchgear—wholesale |
| Generators, electrical—wholesale | Time switches—wholesale |
| Hanging and fastening devices, electrical—wholesale | Transformers, electric: except electronic—wholesale |
| Industrial motor controls—wholesale | Transmission equipment, electrical—wholesale |
| Insulators, electrical—wholesale | Unit substations—wholesale |
| Lamp bulbs—wholesale | Wire rope or cable, insulated—wholesale |
| Light bulbs, electric—wholesale | Wire, insulated—wholesale |
| Lighting fixtures: residential, commercial, and industrial—wholesale | Wiring devices—wholesale |
| Lugs and connectors, electrical—wholesale | Wiring materials, interior—wholesale |
| Motor controls, electric—wholesale | Wiring supplies—wholesale |
| Codes |
Titles | Total Marketable US Businesses |
| 50630000 | Electrical apparatus and equipment | 3,770 |
| 50630100 | Transformers and transmission equipment | 87 |
| 50630101 | Bus bars and trolley ducts | 2 |
| 50630102 | Pole line hardware | 150 |
| 50630103 | Power transmission equipment, electric | 257 |
| 50630104 | Transformers, electric | 64 |
| 50630105 | Unit substations | 5 |
| 50630200 | Electrical fittings and construction materials | 106 |
| 50630201 | Boxes and fittings, electrical | 24 |
| 50630202 | Cable conduit | 27 |
| 50630203 | Circuit breakers | 75 |
| 50630204 | Conduits and raceways | 14 |
| 50630205 | Electrical construction materials | 229 |
| 50630206 | Electrical supplies, nec | 7,075 |
| 50630207 | Fuses and accessories | 31 |
| 50630208 | Ground fault interrupters | 13 |
| 50630209 | Hanging and fastening devices, electrical | 18 |
| 50630210 | Insulators, electrical | 55 |
| 50630211 | Lugs and connectors, electrical | 28 |
| 50630212 | Panelboards | 24 |
| 50630213 | Receptacles, electrical | 13 |
| 50630214 | Safety switches | 9 |
| 50630215 | Service entrance equipment, electrical | 21 |
| 50630216 | Switchboards | 22 |
| 50630217 | Switches, except electronic, nec | 18 |
| 50630218 | Switchgear | 36 |
| 50630219 | Time switches | 7 |
| 50630220 | Wiring devices | 44 |
| 50630300 | Wire and cable | 510 |
| 50630301 | Apparatus wire and cordage | 7 |
| 50630302 | Building wire and cable | 24 |
| 50630303 | Control and signal wire and cable, including coaxial | 43 |
| 50630304 | Electronic wire and cable | 205 |
| 50630305 | Power wire and cable | 26 |
| 50630306 | Telephone and telegraph wire and cable | 49 |
| 50630400 | Lighting fixtures | 2,788 |
| 50630401 | Light bulbs and related supplies | 626 |
| 50630402 | Lighting fittings and accessories | 129 |
| 50630403 | Lighting fixtures, commercial and industrial | 622 |
| 50630404 | Lighting fixtures, residential | 57 |
| 50630500 | Electric alarms and signaling equipment | 158 |
| 50630501 | Alarm systems, nec | 338 |
| 50630502 | Burglar alarm systems | 604 |
| 50630503 | Fire alarm systems | 452 |
| 50630504 | Signaling equipment, electrical | 67 |
| 50630505 | Door chimes, electric | 4 |
| 50630600 | Batteries | 695 |
| 50630601 | Batteries, dry cell | 66 |
| 50630602 | Storage batteries, industrial | 180 |
| 50639901 | Antennas, receiving, satellite dishes | 112 |
| 50639902 | Flashlights | 43 |
| 50639903 | Generators | 562 |
| 50639904 | Motor controls, starters and relays: electric | 123 |
| 50639905 | Motors, electric | 595 |
