Protect yourself against electrical shock that can cause your heat to stop or cause burns. A ground fault circuit interrupter (GFCI), also called Ground Fault Interrupter (GFI) or Residual Current Device (RCD) is a device is used in the home to just to this. You home may already have this, such as in the bathrooms or kitchen. But, not all homes will have them installed. And if you renting it may be difficult to arrange to have them installed. But, you can buy plug in ones to simplify the problem. Tower Manufacturing makes a 5 Outlet GFCI Adapter. Rated at  15 amp, 125 volt  for indoor use only. It plugs into and 15 or 20 indoor electrical receptacle, Red light indicator “Power ON” and automatic reset GFCI.