Quote Originally Posted by matiusaa View Post
You have to play hands that have more than 50% equity against villian's range.
Having greater than 50% equity IS NOT THE SAME as having greater than 0 EV.
(I'm resisting the urge to add bold and underline.)

The fact that there's dead money in the pot means you ALWAYS need LESS THAN 50% equity to be +EV.
Exactly how much less than 50% equity will vary, but is simple to figure out.

If you base your ranges on equity and not EV, you will be folding a lot of hands that are +EV to play.

E.g.
It's folded to the button, who opens to 3 BB, and the SB folds, with you in the BB.
There is 4.5 BB in the pot, and you face a bet of 2 BB.
bet/(bet + pot) = 2/6.5 ~= 30.8%

So you only need ~31% equity to have 0EV.
If you're folding hands between 31% and 50% equity, then you're folding +EV hands.