Gov. Phil Murphy said state and Amtrak officials will meet about Wednesday’s commuting meltdown when a downed power wire brought NJ Transit and Amtrak trains to a halt on the busy Northeast Corridor, stranding thousands of commuters. Wednesday evening service suspension resulted in hours without rail service, with delays and train cancellations that spilled in to the Thursday morning commute. That prompted an angry letter from Murphy to Amtrak Board Chairman Tony Coscia asking for meetings and contingency plans. “We’ve been in touch with Amtrak since this happened, we demanded a meeting with t…