A securing device for immobilizing plural electric wires is disclosed. The securing device includes a notched supporting member having first and second support sides, and a signal concavity for each of the plural electric wires for allowing the plural electric wires to be placed therein, and a capping member having one end pivotally connected to one end of the notched supporting member, and being in a form of an elongated trough having a top and first and second cap sides extending from the top wherein in operation the capping member extends over a top of the notched supporting member with the first cap side extending over the first support side and the second cap side extending over the over the second support side when the capping member is closed over the notched supporting member for clamping each electric wire between the cap sides of the capping member and the notched supporting member.