Can't get Arcane Charge to stack to 4

[mstrsdragon 0]

My arcane mage has been level 90 for about 2 weeks, and I still can't get Arcane Charge to stack to 4. A stack of 2, no problem. A stack of 4, ! I've gone to the training dummies and have spent nearly 5 minutes just trying to get a stack of 3, and no luck.

The rotation I've been using is: Nether Tempest, Arcane Explosion x4, Arcane Barrage, then Arcane Missiles. If I have 2 stacks of Arcane Missles then I'll cast Arcane Barrage before casting the last stack of AM. So far this has served me well (unless I'm overwhelmed by a mob), but I would like to try the suggested rotation. Any help you can offer would be much appreciated.

[D4n13le 2]

I never played Arcane, but from a quick look at the guide here on Icy Veins, your rotation seems pretty off.

For single target fights you should choose Living Bomb as your lvl75 talent, and make sure to keep it applied on the target (refresh it when it has < 3 seconds left).

Regarding your rotation, you should cast Arcane Blast (and not Arcane Explosion) until you get 4 stacks of Arcane Charge. Then spend all the Arcane Missiles procs you have, cast Arcane Barrage, and start again.

I may be mistaken, but this should be a start.

[Oltier 471]

My arcane mage has been level 90 for about 2 weeks, and I still can't get Arcane Charge to stack to 4. A stack of 2, no problem. A stack of 4, ! I've gone to the training dummies and have spent nearly 5 minutes just trying to get a stack of 3, and no luck.

The rotation I've been using is: Nether Tempest, Arcane Explosion x4, Arcane Barrage, then Arcane Missiles. If I have 2 stacks of Arcane Missles then I'll cast Arcane Barrage before casting the last stack of AM. So far this has served me well (unless I'm overwhelmed by a mob), but I would like to try the suggested rotation. Any help you can offer would be much appreciated.

Or did you mean AoE rotation?

[Mortanius 3]

Arcane Explosion has only a chance of getting you an Arcane Charge where Arcane Blast will guarantee you one.

Like they said above, definitely read over the guide here on Arcane mages. It will clear a lot up a lot of your questions for you while giving you some great tips you may not have even known about.