THE MAIN #1 HOIST (NORDBERG 7030-1084) WAS TAKEN OUT OF SERVICE 10-29-2012 AT 7:40AM. SERVICE WORK ON THE MG SET WAS PERFORMED OVER THE WEEKEND. NOISE AND LIGHT SPARKING WAS COMING FROM THE MOTOR. INDEPENDENT ELECTRIC WAS CALLED. IT WAS DETERMINED THAT 2 WIRES HAD BEEN CROSSED. THE WIRES WERE DISCONNECTED AND HOOKED UP PROPERLY. HOIST WAS PLACED BACK INTO SERVICE AT 8:20AM.