An assembly including a ground bar for coupling to a ground, a conductive contact for electrically connecting a wire to the ground bar, and a switch for selectively disconnecting the conductive contact from the ground bar to thereby selectively disconnect the wire from the ground bar when the wire is electrically connected to the conductive contact. The assembly may include a plurality of conductive contacts and a plurality of switches for selectively disconnecting an associated conductive contact from the ground bar. A method of using an assembly having a ground bar, a conductive contact, and a switch includes electrically connecting a wire to the conductive contact, and actuating the switch to selectively disconnect the conductive contact from the ground bar to thereby selectively disconnect the wire from the ground bar without electrically disconnecting the wire from the conductive contact.