Where can you you find bound armor in the elder scrolls oblivion

You can't find bound armor anywhere. The only way to get it is to buy the spells that can summon them. But, a easy solution is to buy Daedric armor. Which, is only available at level 20. But they cost a heck of a lot of gold and weigh like hell.

Or you can find doomstones that give you the bound spells (weapons and armor). All of them weigh nothing and still have as good a rating as Daedric armor and weapons.

You can also kwpp these weapons perminantly by degrading the weapons/armours health and then repairing it to 100 with repair hammer(s). Then all you have to do is drop it and when the spell has run out just pick it up. It still weighs nothing, you can enchant it still and it still has the same ratings.