Our Services At S.A. Electric Ltd. we do all types of residential electrical work (new home construction, custom homes, renovations) and some light commercial work. We are up to date in all the newest lighting and can help you with the actual layout of your lighting needs. We install built in vacuum systems, hot tubs, floor heat, security systems, and all telephone, cable and internet wiring. Specifically, we specialize in home automation. We install everything from your basic sound systems to the more sophisticated Control4 smart home automation system.