Q 1) I want to strip the plug from the LCD monitor and wire it directly to the 110v on the arcade power supply. How will the monitor be turned on after turning the main power to arcade is off? Do I after open the cab up and turn the monitor on each time or will it auto-sense?
Depends on the monitor.
Turn it on then un-plug and plug it back in after a little while.
If it doesn't come back on, check for a "power restore" menu setting.
If there's no menu setting, try wedging the power button with a toothpick or similar so it is always pressed. (Turn it on then un-plug and plug it back in to test.)
If that fails, you can wire a pushbutton in parallel with the monitor power switch.
Q 2) I like to install inline fuses on both AC legs between the power supply and the power cord. What is the recommended fuse specification?
A fuse on the Hot wire is a good idea, but a fuse on the Neutral wire isn't needed.
Check out
this wiki entry for wiring an IEC power inlet.
Selecting fuse values to use:
* The voltage rating on the fuse needs to be the same or higher than the input voltage to prevent arcing.
* The amperage on the fuse needs to be higher than the current your system will draw, but lower than the wall outlet is rated for. (5 or 7 amps should be good for what you describe, but add up the total current draw to be sure you allow a bit of a buffer)
* Blowtime characteristic -- You don't need a slow-blow fuse that allows a short-term initial power surge. Either a fast-blow or normal-blow fuse will work.
Scott