My Dad is an EE (Electrical Engineer degree), so I do know some of this and what to look for as far as breaker boxes and how to fish lines through to the breaker box. Oh course the Install will have to have his permits and follow the local codes as well as being insured. We did fish the lines through to the circuit box for a seperate dedicated line for my computer. I just want to make sure the Install person will be a professional because in the State of Texas there is no safe guards for Home improvements and if it's done wrong there is only legal recourse, when the job gets done I will know it's done right will all the paperwork and on how they install it, as I will be hovering over them...I do know what a ground wire is....Both bathrooms and my kitchen is on GFCI's.