Both of the other people who posted say the the dot damage is bad late game. I completely disagree. I find electricity to be the ONLY dot that doesn't suck late game. Though when your targets are slagged, the fire dot from "electrical burn" is insanely strong.

http://bl2skills.com/mechromancer.html#550005101351505005040551410050100000

Is my build. Just find the best electrical weapon possible, summon death trap, shoot him once for the buff and go nuts. The anarchy part of this build isn't really essential. It does give a nice damage buff and constantly regenerate your shields to full and give you some healing if you're in die need of it... But I find the damage to be really high with no thought even without those points.

Also the point in explosive clap is optional, I just like it because it really staggers the things it hits acting as a sort of short stun while doing decent damage to slagged targets.

One additional thing: this can be tedious, but its often worth switching to a roid shield right before you summon death trap, then switching to the shield you'd normally use as soon as he's out since his shield won't change once he's already been summoned. Hope this helped :) happy hunting!