Is my electricity meter single phase or three phase? Single phase Typically a single phase supply has a single main fuse and a single meter. Instructions for Installing an Owl http://www.theowl.com/education/installingowl.html http://www.theowl.com/index.php?page=installation-2 -1- Three phase Typically a three phase supply will have up to three main fuses and up to three meters or a single large meter. For further information please get in touch with the Energy Team on Tel: 01926 41 4114 or 01926 47 6623. -2-