@me4502 ETRD description says "use sparingly", i.e. a couple of pixels. This does demonstrate a bug with electrode not conducting correctly to adjacent particles, but I think even with this fixed (and probably in 45.2 as well) a blob of electrode that big will not turn off completely.
@Dragonfree97 I suspect you have used console to make the FSEP, by just changing the type and leaving the life at 0.
FSEP is stable at 50 life. At 0 life, it immediately turns into plasma.
Standard warning applies: Console lets you change things that were never meant to be changed directly, so using console may occasionally produce glitches or unwanted effects.
(Edit: So to fix this particular save, do "set life fsep 50")