I'm remodeling my basement and the only thing keeping me from being able to easily drywall the ceiling is a thick, grey cable that feeds a 100 amp sub panel in the addition of my house. If I re-route the cable, it'll make the remodel much easier and cleaner. Disconnecting from the main box and re-routing would be a tough job. Can I cut the cable, re-route it and splice it back together? The new cable location will be a few feet shorter, so it would only be one splice. What kind of hardware do I need for the splice?