Ive been asked to build one for my local Pub, and have no problem doing it; I just want to know its going to be safe.
It could be on and unattended for quite a while.
are they going to charge customers to play it? don't think that is allowed in Mame licence plus expect Mr Ultracade will be very interested in speaking with you.
i would get them (the pub owners) to sign a disclaimer...else do you really want the chance of being responsible for burning down your local pub?
I wonder what their insurers would think about non tested/verified safe electrical goods being installed in the pub?
You also need to think about other things...like making the cab electrically safe to prevent the punters getting electric shock from poor grounding of anything metallic. dont really want to kill the customers do you?
there are lot of thing you need to consider when putting a cab in a public place.