| Business | Phone |
| A G James Electrical Co 734 Grandview St N, Oshawa L1K 2E6 | (905) 619-2183 |
| Acdc Electric 619 Pinewood St, Oshawa L1G 2S2 | (905) 434-8556 |
| Ace Electric Oshawa 599 Annapolis Ave, Oshawa L1J 2Y9 | (905) 434-5762 |
| Alma Electric 520 Fox St, Oshawa L1J 6X3 | (905) 725-9934 |
| Amelco Electric Inc 683 Hillcroft St, Oshawa L1G 2S5 | (905) 434-4407 |
| Hill-Rowe Electric Ltd 70 Seneca Ave, Oshawa L1G 3V4 | (905) 728-4611 |
| Hitech Electrical Engineering 301 Wentworth St W, Oshawa L1J 1M9 | (905) 434-6828 |
| Imc Electric Ltd 633 Albert St #A, Oshawa L1H 4T4 | (905) 571-2743 |
| J & S Electric Ltd 5104 Oakridge Trail, Oshawa L1H 7K4 | (905) 432-3244 |
| Jlm Electric Ltd 1318 Kilmaurs Ave, Oshawa L1K 2A3 | (905) 728-1899 |
| Mars Electric 62 Gladstone Ave, Oshawa L1J 4E5 | (905) 435-0361 |
| Orbit Electrical 104 Bloor St E, Oshawa L1H 3M2 | (905) 571-2977 |
| Oshawa Electrical Svc Inc 1228 Olive Ave, Oshawa L1H 8R8 | (905) 434-1990 |
| South End Electric 260 Wentworth St E, Oshawa L1H 7R7 | (905) 723-1986 |
| Space Age Electric Ltd 219 Bloor St E, Oshawa L1H 3M3 | (905) 436-6744 |
| Tartan Contracting 585 Wentworth St E, Oshawa L1H 3V8 | (905) 434-2803 |
| Townsend Electric Ltd 767 Simcoe St S, Oshawa L1H 4K5 | (905) 723-2343 |
| Burnley Electric 62 Bloor St E, Oshawa L1H 3M2 | (905) 720-2859 |
| C Hunter Electrical 3 Steepleview Crt, Oshawa L1H 7K4 | (905) 655-9122 |
| Carlo's Electric Ltd 105 Olive Ave, Oshawa L1H 2P1 | (905) 728-7361 |
| Electrician 295 Galway Crt, Oshawa L1J 6K6 | (905) 723-0215 |
| Eagle Electric Svc & Supplies 253 Arden Dr, Oshawa L1G 1X6 | (905) 436-6116 |