what is the best perm item for lightning trapsin to reach the highest dmg and wat is the highest dmg?

use a +3 trap ammy, a +3 trap helm, 2 +3 trap/+3 LS claws, enigma, 2 sojs or bks, arachnid mesh, anni, torch, and a bunch of trap gcs for the most pure damage. you could also do a CTA on your alt weap for 1 more point(and BO of course but that doesnt help damage). with all that stuff you could get your traps to over lvl 50 and they would probably do around 12-15k

if you can afford it, get an act 2 mercanary (prayer or holyfreeze) and give him an Infinity (Ber + Mal + Ber + Ist ) a polearm runeword that gives level 12 conviction(-90ish res i think)