Electrical Box Covers at Lowes Shop electrical box covers in the electrical boxes & covers section of Lowes. Find quality electrical box covers online or in store. When to Use Metal Electrical Box or Plastic Box - The Spruce Use a metal electrical box when metal-sheathed cable (also called armored BX cable) or metal conduit is running in or out of the box. Metal cable and conduit depend on the contact from its metal sheathing to the metal box to complete grounding. Also use metal boxes Discover the Typical Cost to Replace a Fuse Box Are you looking to replace a fuse box? Want to know how much does it should cost and what is a fair price to pay an electrician? We can help – we have been researching prices charged by electricians in the United Kingdom for nearly two years – that’s the point of this site. Understanding An Old School Fuse Box - YouTube Nov 07, 2016Here's a quick review of how to use a fuse box (with the screw-in fuses) safely and some discussion about what to look out for in an old house.