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 | 4,420 |
| 50630100 | Transformers and transmission equipment | 128 |
| 50630101 | Bus bars and trolley ducts | 2 |
| 50630102 | Pole line hardware | 138 |
| 50630103 | Power transmission equipment, electric | 243 |
| 50630104 | Transformers, electric | 64 |
| 50630105 | Unit substations | 5 |
| 50630200 | Electrical fittings and construction materials | 108 |
| 50630201 | Boxes and fittings, electrical | 20 |
| 50630202 | Cable conduit | 34 |
| 50630203 | Circuit breakers | 72 |
| 50630204 | Conduits and raceways | 12 |
| 50630205 | Electrical construction materials | 259 |
| 50630206 | Electrical supplies, nec | 7,641 |
| 50630207 | Fuses and accessories | 26 |
| 50630208 | Ground fault interrupters | 11 |
| 50630209 | Hanging and fastening devices, electrical | 19 |
| 50630210 | Insulators, electrical | 47 |
| 50630211 | Lugs and connectors, electrical | 24 |
| 50630212 | Panelboards | 21 |
| 50630213 | Receptacles, electrical | 11 |
| 50630214 | Safety switches | 8 |
| 50630215 | Service entrance equipment, electrical | 19 |
| 50630216 | Switchboards | 21 |
| 50630217 | Switches, except electronic, nec | 19 |
| 50630218 | Switchgear | 33 |
| 50630219 | Time switches | 8 |
| 50630220 | Wiring devices | 42 |
| 50630300 | Wire and cable | 480 |
| 50630301 | Apparatus wire and cordage | 5 |
| 50630302 | Building wire and cable | 23 |
| 50630303 | Control and signal wire and cable, including coaxial | 39 |
| 50630304 | Electronic wire and cable | 205 |
| 50630305 | Power wire and cable | 26 |
| 50630306 | Telephone and telegraph wire and cable | 43 |
| 50630400 | Lighting fixtures | 3,017 |
| 50630401 | Light bulbs and related supplies | 578 |
| 50630402 | Lighting fittings and accessories | 129 |
| 50630403 | Lighting fixtures, commercial and industrial | 596 |
| 50630404 | Lighting fixtures, residential | 63 |
| 50630500 | Electric alarms and signaling equipment | 161 |
| 50630501 | Alarm systems, nec | 314 |
| 50630502 | Burglar alarm systems | 551 |
| 50630503 | Fire alarm systems | 457 |
| 50630504 | Signaling equipment, electrical | 64 |
| 50630505 | Door chimes, electric | 4 |
| 50630600 | Batteries | 642 |
| 50630601 | Batteries, dry cell | 67 |
| 50630602 | Storage batteries, industrial | 185 |
| 50639901 | Antennas, receiving, satellite dishes | 109 |
| 50639902 | Flashlights | 33 |
| 50639903 | Generators | 569 |
| 50639904 | Motor controls, starters and relays: electric | 121 |
| 50639905 | Motors, electric | 582 |
