Basic overcurrent protection? In my sci-fi?

Next you’re gonna tell me you can’t just “re-route power” by pressing buttons on a screen and not, you know, actually unhooking any wires!

one of my favorite jokes about this is on TNG. i think it's the episode where the bridge gets cut off from the rest of the ship, and Troi is in charge of running the ship. O'Brian makes a comment to Ro about how you can't 'just reroute power from things'.

it's a funny little nod from the writers.

You kind of can, though. A solar system on a house can switch between batteries and mains. It can even do that by itself. Surely if the Enterprise needed that kind of thing, it wouldn't be hard to build into the ship's design.