Hine never indicated the power was cut-off. That is a myth that CTers contrived from misconstruing her testimony in which she explained why she was able to go to window and look at the motorcade. Her job was to answer the phone. There were no incoming calls at that moment (i.e. the "lights" on the phone). So she could walk away from her desk and look out the window.
Mr. BALL. Did you stay at your desk?
Miss HINE. Yes, sir: I was alone until the lights all went out and the phones became dead because the motorcade was coming near us and no one was calling so I got up and thought I could see it from the east window in our office.
It's apparent what Hine meant. First, look at the question she is being asked. "Did you stay at your desk?" Her job was to answer the phone at her desk. She had volunteered to stay behind and answer the telephone so some others could go out to see the motorcade. Her response explains why she didn't stay at her desk to answer the phone (i.e. there were no calls to be answered). The lights going out in the building would have nothing to do with her ability to leave her desk. LOL. If there were any doubt about this, she confirms the "lights all went out and phones became dead because" "
no one was calling." No one was calling! Not that the power was out but that "no one was calling." She attributes this - rightly or wrongly - to the fact that "the motorcade was coming near us." Why would she have any cause to believe a motorcade nearing them would cause a power outage? What she is conveying is that because most everyone was outside watching the motorcade that there were no calls at that moment (i.e. there were no lights on the phone because "no one was calling") which allowed her to leave her desk because she had no calls to answer. Good grief.
BUT AGAIN what point would there be in a conspiracy scenario to turn the power and phones off for a brief instant while the motorcade passed the building? I've never seen anyone articulate a reasonable basis for the conspirators to do this. And if these CTers are to be believed the power came back on, but then a few minutes later was turned off again to explain why a couple of elevators didn't work! Again why would the conspirators bother with this risky and seemingly pointless undertaking of turning the power on and off more than once for brief instant? If the point, however, is simply that the power may have gone off for some reason
unrelated to a conspiracy or the assassination, it seemingly makes little difference whether it went off or not. It would be like arguing about the temperature that day. The implication being made by some CTers is that a power outage suggests something more sinister but they can't or won't articulate what. It's a where there is smoke, there is fire argument that is based on a false premise and then makes no narrative sense if given more than a seconds thought.