32ga and 30ga wire are your best bets for a Protank head, 28ga and thicker as well as improperly installed flat ribbon kanthal generally degrades the pin insulator quicker or cuts the insulator leading to shorts later down the road. Being most people that use a Protank or clearomizer of any sort are on regulated, circuitry controlled devices, 30 and 32 ga wire heats up faster, and due to the space you have to work in, gives more room to work with. Micro-coiling and Nano-coiling a Protank head even on an Ego Twist is the way to go and improves performance drastically, just takes a couple more steps to do depending on your wrapping tool, my case I use a 1/16th inch drill bit (5 Top/4 bottom wrap with 32ga, but mostly use a 9/8 wrap with 30ga ranging in at 1.8-2.2ohms perfect for the Ego imo) though I lean toward using more wraps with 30ga as it gives me more wick and wire surface contact which equates to more liquid vaporizing at once, then I thread in distilled water boiled organic cotton ball material that is marginally loose, to packed you get no juice flow, just enough to when the coil grips enough of the cotton the coil will want to shift, is about perfect and the most you need. This done after you have mounted and tightened the coil down into the head with the wrapping tool still in place after compressing and torching, and wires pulled, snugged tight, and cut/excess removed, and 30ga being larger diameter is more resiliant and less fragile than 32ga.
