if you are planning on using all three for one amplifier, think again, the first one in the chain (usually the one wired that produces the most amps) will overdraw (even if they are the same model\brand) and it will shut itself down.
if you are planning on running 3 seperate low wattage amps, and strapping them all, then your AOK //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif
may i ask what you are planning?