I will be using a Jetstream JTPS31MB variable power supply. Don't have it yet. Can do 25 amps continuous. Got it used an relatively inexpensive on ebay. If you have an old computer, you can probably just use the PSU from it. Otherwise there are power supplies on ebay. An example would be use a megawatt 33amp (s-350-12) 12v power supply, that can give you 30 amps continuous. Can't vouch for quality, though.