By multiplying 2 Amps x 120 Volts, you find out the refrigerator uses 240 Watts. The batteries will need to deliver 20 Amps to run the refrigerator (240 Watts/12 Volts = 20 Amps). Typically, refrigerators operate about 1/3 of the time (1/3 duty cycle), or 8 hours a day.Therefore, the A.H. drain will be 160 A.H.(8 hours x 20 Amps = 160 A.H.). After the load and running time is established, the battery bank size can be calculated.ypically, refrigerators operate about 1/3 of the time (1/3 duty cycle), or 8 hours a day. Therefore, the A.H. drain will be 160 A.H. (8 hours x 20 Amps = 160 A.H.). After the load and running time is established, the battery bank size can be calculated.
Heavy-duty sewing machines are built to handle thick fabrics like denim or leather and are made for long-lasting durability and dependability. Learn more about what makes a heavy-duty sewing machine different and compare some of the top selling heavy-duty machines.
Bradawl or Pricker. This carpentry awl has a beveled tip and is used to make pilot holes in wood for brads and screws. Bridle or Harness Awl. Used by leatherworkers to make holes in leather prior to stitching, this type has a diamond-shaped point and comes with a range of diameters to suit the work.Saddlerâs Awl.his carpentry awl has a beveled tip and is used to make pilot holes in wood for brads and screws. Bridle or Harness Awl. Used by leatherworkers to make holes in leather prior to stitching, this type has a diamond-shaped point and comes with a range of diameters to suit the work. Saddlerâs Awl.