I feel like my question probably has a simple answer, but I don't deal with the back end of electricity often, so I want to make sure I do things right.
I am building a series of LED RGB light boxes for my wife for a trade show background. They'll need a total of 850 watts separated semi-evenly across five LED decoders. This is the decoder I am using (http://www.amazon.com/gp/product/B00PQASR9K?psc=1&redirect=true&ref_=oh_aui_detailpage_o00_s00).
I am planning to buy five 12v 30a transformers, which I believe will be plenty sufficient for this load. This is the transformer I'm planning to get (http://www.amazon.com/Singpad-Supply-Regulated-Transformer-360Watt/dp/B00N2PRMWY/ref=sr_1_1?ie=UTF8&qid=1433898154&sr=8-1&keywords=Singpad+new+style+led+power+supply).
My question is this. How much AC power will I need? Is it a 1 to 1 ratio (so the AC would also need to be sufficient to handle 850 watts)? What phase do I need?
My options for electrical power that I can purchase for the trade show are: 1) 20 amps single phase 120v 2) 30 amps three phase 208v
There are a couple of additional options with more amps, but I think one of these should be sufficient. Which will I need?
Also, I've never hooked up a transformer of this kind, so bonus points if you can point me to an online tutorial.