
I have a few stats related questions

If I have a bow with the following stats on my elementalist (E/Mo, so no Marksmanship):
Dmg: 15-28 (Requires 9 Marksmanship)
#1. Damage +15% (while Enchanted)
#2. Enchantments last 20% longer
#3. Armor penetration 20% (Chance 20%)
#1. Do I have to cast an enchantment myself to receive the bonus? Or as long as there's an enchantment on me, no matter who casted it, I do 15% more damage? Also does that 15% extra damage adds to my arrows or spells

#2. I know enchantments will last 20% longer if I cast the enchantments on myself. What if a monk cast an enchantment on me, will that enchantment last 20% longer?
#3. What does the armor penetration, arrows or fire spells?
I'm sorry if these questions are stupid...
Thanks in adv.
