Looking at the Elemental Shaman mastery in World of warcraft it states that:
Your Lightning Bolt, and Chain Lightning casts have a 15.0% chance to trigger a second cast on the same target for 85% of normal damage and generates less Maelstrom.
How much Maelstrom is generated on each overload for lightning bolt and chain lightning, per target hit?
With the talent "High Voltage" that has a 50% chance of normal to proc a 3rd overload, will this give the same amount of Maelstrom?