General consensus is no. The stun proc has rather low proc odds (10%). That maps out in the following way, in terms of your chance to hit at least one enemy with the proc each pulse (assuming you're looking at only one power or the other):
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So, even with 16 enemies in the AoE area, you still only have an 81% chance per pulse that even one gets hit. And Conductive Aura has a target cap of 8. Plus it's only a Mag 2, so only affects Minions.1 10% 2 19% 3 27% 4 34% 5 41% 6 47% 7 52% 8 57% 9 61% 10 65% 11 69% 12 72% 13 75% 14 77% 15 79% 16 81%
Your odds are a little better with the proc in two powers with them overlapping each other. They are even higher if you get your recharge up to the point where multiple Static Fields can lay on top of each other. But even with three powers overlapping, your chance of scoring 3 procs on the same pulse is just 7% and probably not worth it.
Quick question. Should I place that enhancement in my Conductive Aura or the Static Field?