I figured i would start a new post about this as it seems like companies such as 1st Preston and AMS are being really pushy about this. I have refused to do this for AMS do to what i see as a HUGE liability if someone gets hurt. I could just see a neighbor come waltzing into a home while i was working in the basement testing the furnace, tripping over a "suicide cord" and electrocuting themselves. I talked to our local electric provider and they also advised against it. If you ask an OSHA inspector they will also tell you it's illegal but these service co's keep saying HUD requires it! Why would one government agency (OSHA) say you cannot do this while another (HUD) tells you that you have to do it?? Anyways if any of you are doing this ask your insurance underwriter if your covered in case someone gets injured or killed while your doing this. I think you will be surprised..........................