High Power Sked button is the only way to get Maximum Continuous Thrust MCT on BOTH engines at the same time. It's an EASA thing.. As previous posters have stated, it is much easier to just firewall the thrust levers to the stops.

AC Power meter is NOT a TRU. It is a Meter that indicates AC Voltage, Frequency and/or Current. On the 700, EICAS Electrical Page 1 of 2 will give you some of that information.