Elementalist Armor Ele Bonus Stacks?

I've searched and didn't find anything regarding this. has it been discovered whether the +15 vs an Element on Elemental armor stacks or is global? On my pyromancer armor am I getting +60 armor total against fire attacks when wearing all 4 parts, or am I only getting +15? I ask because with the obsidian armor one could get 1 of each if the bonus is only +15 regardless of how many pieces you wear and not look like a total. . .weirdo.

each piece is seperate, when you get hit the computer decides where you got hit, so if you get hit on the chest, you get the +15 for the chest, it doesnt add up all the pieces together.