Power Charge on Crit: Stacking

Greetings.

I've been wondering, how does the property "chance to gain a Power Charge on Critical Strike" stacks with itself?
For example, let's say I have a corrupted wand with a modifier
5% chance to gain a Power Charge on Critical Strike
and I run a PCoC gem with another
54% chance to gain a Power Charge on Critical Strike.

The question is, are these completely separate? Do I have a chance for both mods to proc and to gain two charges on one crit?
Or do they stack additively or multiplicatively?

Thanks for answers.
ING: Valhaal
Last bumped on Jun 22, 2018, 7:20:15 PM
If both apply to the skill (I recall the weapon mod might be local? Not sure), they will simply add together for a 59% chance to get a power charge on crit.

In general, any "X% change to do Y when Z happens", with the same Y and Z, will simply add the chances together. Getting more than 100% chance doesn't do anything special, you will just always do Y whenever Z happens.
Last edited by Abdiel_Kavash#5296 on Jun 22, 2018, 7:21:21 PM

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