I call this build the Swiss Army Frame, since it can be useful in just about any circumstance. This build is well balanced for any situation, but focuses on survivability for you and your teammates. Every mod and arcane is here for a reason and we'll go through each one.

[Intensify] and [Growing Power] are here to make [Volt]'s 2 more helpful, and his 4 dish out plenty of damage even at higher level targets.

[Primed Continuity] More duration means less recasting [Volt]'s 2 and 3. Not to mention more damage from his 4.

[Stretch] and [Cunning Drift] are here to make [Volt]'s 4 worth it. Without enough range, you won't hit enough targets. You'll soon see that this build revolves around [Volt]'s 4.

[Adaptation], [Vitality], and Arcane Barrier are here to keep YOU alive. Vitality increases your EHP and gives you some protection from toxin damage/procs, which is very important. [Adaptation] is here for the same reason. More damage resistance = Greater EHP. Arcane Barrier completely renews your shield when your in a tough spot, like if you can't cast your 4.

[Primed Flow], [Streamline], and Arcane Energize are here to improve your Energy Economy. With these three, you won't ever have to worry running out of energy. This allows you to cast your 4 consistently, along with your 2 for that all around speed boost.

Last and certainly not least, we have [Capacitance]. If [Volt] was a present, [Capacitance] would be the big bow on top that completes it. With [Capacitance], when we cast our 4, it grants overshields to you AND your allies. So this refreshes your "health" pool, and helps your allies survive as well. When casted fairly consistently, [Volt] can make himself and his allies almost invulnerable. Now you can see why this build revolves around [Volt]'s 4, but that doesn't mean his other abilities aren't useful! (except his 1)

[Volt]'s 1: Don't use this.

[Volt]'s 2: Use this to boost you and your allies all around speed! Attack speed, movement speed, and reload speed! ALL the speed! This lasts 15.5 seconds but only costs 17.5 energy, thanks to our great Energy Economy.

[Volt]'s 3: Use this to give yourself and your allies some cover AND extra damage. When shooting through [Volt]'s shield, 50% electricity damage is added to attacks. Not only this, but crit damage is increased by 200%!

That about wraps it up. Enjoy!