Via Nemo Utopias' Guide an Update to this guide:
Other Elec Armor guides are lacking the following info about Power Surge; Nemo's guide has it. The most important being that EndMod sloting helps recovery when this power is up only. There is nothing to avoid the crash to Zero End.
Crash = Almost no health, NO END. All toggles will be off so almost any attack that hits after the crash will kill you.
Blues seem to work immediately after crash and greens do for sure. If you have self heal via med pool; pop a blue, heal, pop all toggles back on, likely you can pop heal again.
With toggles slotted to 40% ressist turning this on at lvl 38 gives you 92% res to almost everything. I don't know if the cap is before 92%? The reson to slot Resist is for Toxic, which you don't have except via this set.
Info below repeated from Nemo_Utopia guide.
9) Power Surge (level 38)
-Self +Res(Disorient, Sleep, Hold, Immob, KB, End Drain, Recovery DeBuff, TP, Dmg [not Psi]) +Recovery
-Base: 52.5% (Smash/Lethal, Fire, Cold, Tox), 60% (Eng), 45% (Neg)
-Lasts 180s / -Rch: 1000s / -End: 2.6 / -Act: 1.96s
-Enhancements taken: +Acc, -End, -Rch, +Hold, +Dmg, End Mod
-Special: When this power ends, you drop to 10% HP and 0 End, a special EMP Pulse activates (holds even Lts./minions for 10s). The Acc and Hold affect the EMP Pulse
-Do you wish you could look like a Gremlin? Do you love the cackle of electricity? Do you just love taking only half damage from any non-psychic? Well, this is a power youll want, and is your god mode button. Unslotted, this thing lasts for three minutes out of just under every 20. Slotted (and with Hasten and Lightning Reflexes), the recharge means it can be up far more often, and resistance slotting means that 52.5%/60%/45% can go to ~84%/96%/72%. When running this and your toggles, you can EASILY cap resistances and have ~42 % to Psychic! Thats a darn good deal. The fact that this completes your status protection and has +Recovery means youll love every second of Gremliny goodness. Your slotting will depend on your other powers, however. The EMP Pulse at crash is also a safety feature that other builds dont have. Just dont go touching any water. Remember, however, that even with this up, Confuse and Fear will still leave you discharging at thin air.
-Slotting: 3 Res, 3 Rch. You want to get the most benefit, the most often, and that's the way to do it. If you find you want to run your other shields, you can sack a few Res slots in this for an Acc, Hold, and/or End Mod. Acc and Hold help the safety button, but are likely a waste, whereas End Mod increases your recovery while Power Surge is up
which can let you run your other shields (and Lightning Field) while attacking like a mad-beast. I'd stick to 3 Res, 3 Rch, and consider 2 Res, 1 End Mod, 3 Rch.