| SIC code | SIC Text
| NAICS code | NAICS Text
|
| 4911 | Electric Services (hydroelectric power generation) | 221111 | Hydroelectric Power Generation |
| 4931 | Electric and Other Services Combined (hydroelectric power generation) | 221111 | Hydroelectric Power Generation |
| 4911 | Electric Services (fossil fuel power generation) | 221112 | Fossil Fuel Electric Power Generation |
| 4931 | Electric and Other Services Combined (fossil fuel power generation) | 221112 | Fossil Fuel Electric Power Generation |
| 4911 | Electric Services (nuclear electric power generation) | 221113 | Nuclear Electric Power Generation |
| 4931 | Electric and Other Services Combined (nuclear power generation) | 221113 | Nuclear Electric Power Generation |
| 4911 | Electric Services (other electric power generation) | 221119 | Other Electric Power Generation |
| 4931 | Electric and Other Services Combined (other electric power generation) | 221119 | Other Electric Power Generation |
| 4911 | Electric Services (electric power transmission and control) | 221121 | Electric Bulk Power Transmission and Control |
| 4931 | Electric and Other Services Combined (electric power transmission and control) | 221121 | Electric Bulk Power Transmission and Control |
| 4911 | Electric Services (electric power distribution) | 221122 | Electric Power Distribution |
| 4931 | Electric and Other Services Combined (electric power distribution) | 221122 | Electric Power Distribution |
| 4931 | Electric and Other Services Combined (natural gas distribution) | 221210 | Natural Gas Distribution |
| 1731 | Electrical Work | 235310 | Electrical Contractors |
| 1794 | Excavation Work | 235930 | Excavation Contractors |
| 2677 | Envelopes | 322232 | Envelope Manufacturing |
| 2892 | Explosives | 325920 | Explosives Manufacturing |
| 3313 | Electrometallurgical Products, Except Steel | 331112 | Electrometallurgical Ferroalloy Product Manufacturing |
| 3471 | Electroplating, Plating, Polishing, Anodizing, and Coloring | 332813 | Electroplating, Plating, Polishing, Anodizing, and Coloring |
| 3431 | Enameled Iron and Metal Sanitary Ware | 332998 | Enameled Iron and Metal Sanitary Ware Manufacturing |
| 3699 | Electrical Machinery, Equipment and Supplies, NEC (electronic teaching machines and flight simulators) | 333319 | Other Commercial and Service Industry Machinery Manufacturing |
| 3634 | Electric Housewares and Fans (wall and baseboard heating units for permanent installation) | 333414 | Heating Equipment (except Warm Air Furnaces) Manufacturing |
| 3699 | Electrical Machinery, Equipment and Supplies, NEC (outboard electric motors) | 333618 | Other Engine Equipment Manufacturing |
| 3534 | Elevators and Moving Stairways | 333921 | Elevator and Moving Stairway Manufacturing |
| 3548 | Electric and Gas Welding and Soldering Equipment (except transformers for arc-welding) | 333992 | Welding and Soldering Equipment Manufacturing |
| 3699 | Electrical Machinery Equipment and Supplies, NEC (laser welding and soldering equipment) | 333992 | Welding and Soldering Equipment Manufacturing |
| 3571 | Electronic Computers | 334111 | Electronic Computer Manufacturing |
| 3679 | Electronic Components, NEC (antennas) | 334220 | Radio and Television Broadcasting and Wireless Communications Equipment Manufacturing |
| 3679 | Electronic Components, NEC (radio headphones) | 334310 | Audio and Video Equipment Manufacturing |
| 3671 | Electron Tubes | 334411 | Electron Tube Manufacturing |
| 3675 | Electronic Capacitors | 334414 | Electronic Capacitor Manufacturing |
| 3676 | Electronic Resistors | 334415 | Electronic Resistor Manufacturing |
| 3677 | Electronic Coils, Transformers, and Other Inductors | 334416 | Electronic Coil, Transformer, and Other Inductor Manufacturing |
| 3678 | Electronic Connectors | 334417 | Electronic Connector Manufacturing |
| 3679 | Electronic Components, NEC (printed circuit/electronic assembly manufacturing) | 334418 | Printed Circuit Assembly (Electronic Assembly) Manufacturing |
| 3679 | Electronic Components, NEC (other electronic components) | 334419 | Other Electronic Component Manufacturing |
| 3845 | Electromedical and Electrotherapeutic Apparatus (other electromedical and electrotherapeutic apparatus) | 334510 | Electromedical and Electrotherapeutic Apparatus Manufacturing |
| 3845 | Electromedical and Electrotherapeutic Apparatus (CT and CAT Scanners) | 334517 | Irradiation Apparatus Manufacturing |
| 3641 | Electric Lamp Bulbs and Tubes | 335110 | Electric Lamp Bulb and Part Manufacturing |
| 3699 | Electrical Machinery, Equipment, and Supplies, NEC (Christmas tree lighting sets, electric insect lamps, | 335129 | Other Lighting Equipment Manufacturing |
| 3634 | Electric Housewares and Fans (except wall and baseboard heating units for permanent installation and elec | 335211 | Electric Housewares and Household Fan Manufacturing |
| 3548 | Electric and Gas Welding and Soldering Equipment (transformers for arc-welders) | 335311 | Power, Distribution, and Specialty Transformer Manufacturing |
| 3629 | Electrical Industrial Apparatus, NEC | 335999 | All Other Miscellaneous Electrical Equipment and Component Manufacturing |
| 3699 | Electrical Machinery, Equipment, and Supplies, NEC (other electrical industrial apparatus) | 335999 | All Other Miscellaneous Electrical Equipment and Component Manufacturing |
| 3694 | Electrical Equipment for Internal Combustion Engines | 336322 | Other Motor Vehicle Electrical and Electronic Equipment Manufacturing |
| 3634 | Electric Housewares and Fans (electronic cigarette lighters) | 339999 | All Other Miscellaneous Manufacturing |
| 5063 | Electrical Apparatus and Equipment, Wiring Supplies and Construction Materials (except electrical supplie | 421610 | Electrical Apparatus and Equipment, Wiring Supplies, and Construction Material Wholesalers |
| 5064 | Electrical Appliances, Television and Radio Sets | 421620 | Electrical Appliance, Television, and Radio Set Wholesalers |
| 5065 | Electronic Parts and Equipment, NEC | 421690 | Other Electronic Parts and Equipment Wholesalers |
| 7629 | Electrical and Electronic Repair Shops, NEC (retailing new electrical and electronic appliances from a st | 443111 | Household Appliance Stores |
| 5063 | Electrical Apparatus and Equipment, Wiring Supplies, and Construction Materials (Wholesale) (sold via ret | 444190 | Other Building Material Dealers |
| Establishments that use general purpose aircraft to provide a variety of specialized flying services | 481219 | Other Nonscheduled Air Transportation |
| 7359 | Equipment Rental and Leasing, NEC (appliances, TV, VCR, and electronic equipment rental) | 532210 | Consumer Electronics and Appliances Rental |
| 7359 | Equipment Rental and Leasing, NEC (except transportation equipment, industrial equipment, and consumer el | 532299 | All Other Consumer Goods Rental |
| 7359 | Equipment Rental and Leasing, NEC (general rental centers) | 532310 | General Rental Centers |
| 7359 | Equipment Rental and Leasing, NEC (aircraft rental and leasing) | 532411 | Commercial Air, Rail, and Water Transportation Equipment Rental and Leasing |
| 7359 | Equipment Rental and Leasing, NEC (oil field and well drilling equipment) | 532412 | Construction, Mining, and Forestry Machinery and Equipment Rental and Leasing |
| 7359 | Equipment Rental and Leasing (office machine rental and leasing) | 532420 | Office Machinery and Equipment Rental and Leasing |
| 7359 | Equipment Rental and Leasing, NEC (industrial truck and equipment rental and leasing) | 532490 | Other Commercial and Industrial Machinery and Equipment Rental and Leasing |
| 8711 | Engineering Services | 541330 | Engineering Services |
| 7361 | Employment Agencies (executive placement services) | 541612 | Human Resources and Executive Search Consulting Services |
| 7361 | Employment Agencies (except executive placing services) | 561310 | Employment Placement Agencies |
| 7359 | Equipment Rental and Leasing, NEC (portable toilet rental) | 562991 | Septic Tank and Related Services |
| 8211 | Elementary and Secondary Schools | 611110 | Elementary and Secondary Schools |
| 5812 | Eating Places (dinner theaters) | 711110 | Theater Companies and Dinner Theaters |
| 5812 | Eating Places (full-service restaurants) | 722110 | Full-Service Restaurants |
| 5812 | Eating Places (limited-service restaurants) | 722211 | Limited-Service Restaurants |
| 5812 | Eating Places (cafeterias) | 722212 | Cafeterias |
| 5812 | Eating Places (snack and nonalcoholic beverage bars) | 722213 | Snack and Nonalcoholic Beverage Bars |
| 5812 | Eating Places (food service contractors) | 722310 | Food Service Contractors |
| 5812 | Eating Places (caterers) | 722320 | Caterers |
| 7629 | Electrical and Electronic Repair Shops, NEC (other consumer equipment except computer, TV, stereo, VCR, a | 811211 | Consumer Electronics Repair and Maintenance |
| 7629 | Electrical and Electronic Repair Shops, NEC (business and office machine repair, electrical) | 811212 | Computer and Office Machine Repair and Maintenance |
| 7629 | Electrical and Electronic Repair Shops, NEC (telephone set repair) | 811213 | Communication Equipment Repair and Maintenance |
| 7629 | Electrical and Electronic Repair Shops, NEC (electrical measuring instrument repair and calibration, medi | 811219 | Other Electronic and Precision Equipment Repair and Maintenance |
| 7629 | Electrical and Electronic Repair Shops, NEC (appliance repair, electrical; washing machine repair; electr | 811412 | Appliance Repair and Maintenance |
| 6732 | Educational, Religious, and Charitable Trusts | 813211 | Grantmaking Foundations |
| 9111 | Executive Offices | 921110 | Executive Offices |
| 9131 | Executive and Legislative Office, Combined | 921140 | Executive and Legislative Offices, Combined |
