| Business | Phone |
| Ark-Tech Electrical 20 Depew St, Hamilton L8L 7H8 | (905) 312-4962 |
| B & J Electric Ltd 77 Morley St, Hamilton L8H 3R8 | (905) 545-1500 |
| Greg Paul Electric 300 East 34th St, Hamilton L8V 3X1 | (905) 574-2236 |
| Gunnar's Electric Ltd 963 Scenic Dr, Hamilton L9C 1H7 | (905) 526-6228 |
| Harbour Electric Ltd 2 Dunbar Ave, Hamilton L8H 3E4 | (905) 545-4311 |
| Hillmer Rossi Electric Ltd 120 Nebo Rd, Hamilton L8W 2E4 | (905) 574-5522 |
| Holaco Installation Ltd 17 Mckinstry St, Hamilton L8L 6C2 | (905) 547-8551 |
| In-Phase Electrical 595 King St W, Hamilton L8P 1C3 | (905) 524-3454 |
| James A Gordon & Sons 10 Glen Eden Crt, Hamilton L9C 6H6 | (905) 574-4868 |
| Jly Electric Ltd 347 Grays Rd, Hamilton L8E 2Z1 | (905) 561-7772 |
| K & S Electrical 1890 Brampton St, Hamilton L8H 3S5 | (905) 547-5046 |
| K & S Electrical Contractors 1890 Brampton St #E, Hamilton L8H 3S5 | (905) 544-4085 |
| K-Var Electric Ltd 35 Champlain Ave, Hamilton L8G 2H5 | (905) 560-5535 |
| Kvaerner Constructors Ltd 665 Parkdale Ave N, Hamilton L8H 5Z1 | (905) 547-2501 |
| Wesselectric 6 Darlington Drive, Hamilton L8V 4A5 | (905) 975-5483 |
| Mac Intyre Electric Ltd 100 Frid St #18, Hamilton L8P 4M4 | (905) 522-8422 |
| Merlo Electric Inc 270 Hixon Rd, Hamilton L8K 2C5 | (905) 561-6836 |
| Mobile Electrical 33 Shaw St, Hamilton L8L 3P2 | (905) 522-8942 |
| Murray Peters Electric Ltd 274 Ottawa St S, Hamilton L8K 2G1 | (905) 549-3185 |
| Norcon Group Of Co 75 Hunter St E, Hamilton L8N 1M4 | (905) 523-1163 |
| Northshore Contracting 75 Hunter St E #C, Hamilton L8N 1M4 | (905) 523-7891 |
| P S Electric Co Ltd 1576 Stone Church Rd E #14, Hamilton L8W 3P9 | (905) 575-5939 |
| Papp Electric Contractor 298 Catharine St N, Hamilton L8L 4S9 | (905) 529-1702 |
| Bojeczko Skyway Electric 137 Reid Ave S, Hamilton L8K 3V4 | (905) 549-7314 |
| Romar Electrical Svc 76 Harlowe Rd, Hamilton L8W 3R6 | (905) 385-0573 |
| Blain Electric 796 Garth St, Hamilton L9C 4K5 | (905) 388-5888 |
| Ronald Wowk Electric Ltd Po Box 6220 Stn Lcd 5, Hamilton L8V 5C4 | (905) 388-1399 |
| S & K Maintenance 361 Jackson St W, Hamilton L8P 1N2 | (905) 525-1212 |
| Sayers & Assoc Ltd 585 Wentworth N, Hamilton | (905) 312-8817 |
| Sparky's Electric 574 Golf Club, Hamilton | (905) 692-5660 |
| Steve Smith Electric Ltd 63 Duncairn Cres, Hamilton L9C 6E9 | (905) 574-0113 |
| T Lloyd Electric Hamilton Ltd 16 Harlowe Rd, Hamilton L8W 3R6 | (905) 388-8916 |
| Tartan Electric Ltd 7 Emming Crt, Hamilton L9C 4A1 | (905) 574-1722 |
| Triple A Electric 104 Cloverdale Ave, Hamilton L8K 4M1 | (905) 544-9919 |
| Vedi Electric Ltd 38 Bigwin Rd #A, Hamilton L8W 3R4 | (905) 575-3083 |
| Victor Electric & Equipment 8 Main St E, Hamilton L8N 1E8 | (905) 526-9021 |
| Warby Electric 222 Bastille St, Hamilton L9B 2G5 | (905) 385-0141 |
| Festevent Electric 315 Upper Kenilworth Ave, Hamilton L8T 4G3 | (905) 388-1880 |
| Brigadier Electrical Contr Ltd 329 Upper Gage Ave, Hamilton L8V 4H6 | (905) 521-9777 |
| Brothers Electrical Svc Ltd 84 Kennedy Ave, Hamilton L9B 1C7 | (905) 388-7101 |
| C Crans Electric 202 Springside Dr, Hamilton L9B 1M9 | (905) 679-3266 |
| Canadian Electrical Contract 140 King St E #201, Hamilton L8N 1B2 | (905) 541-2288 |
| Childerley Electric 238 Sanatorium Rd, Hamilton L9C 1Z8 | (905) 385-4610 |
| Code Electric 762 Upper James St, Hamilton L9C 3A2 | (905) 388-4070 |
| Comstock Canada Ltd 400 Parkdale Ave N, Hamilton L8H 5Y2 | (905) 549-3557 |
| Controltech Electrical Inc 98 Bigwin Rd #1, Hamilton L8W 3R4 | (905) 389-9797 |
| Coughlin Electric 65 Selkirk Ave, Hamilton L8H 5L8 | (905) 547-4879 |
| D J Mason Electric Co Ltd 38 Bigwin Rd #A, Hamilton L8W 3R4 | (905) 574-1887 |
| E S Fox Ltd 433 Rennie St, Hamilton L8H 3P6 | (905) 547-7225 |
| F J Electric 55 Bruce Park Dr, Hamilton L9A 3G5 | (905) 388-9762 |
| Frank Gauthier's Electric 46 Butler Dr, Hamilton L8W 3K2 | (905) 522-5555 |