  Deconfinement phase transition due to disappearance of confining
colorelectric field correlators is described using nonperturbative equation of
state. The resulting transition temperature $T_c(\mu)$ at any chemical
potential $\mu$ is expressed in terms of the change of gluonic condensate
$\Delta G_2$ and absolute value of Polyakov loop $L_{fund} (T_c)$, known from
lattice and analytic data, and is in good agreement with lattice data for
$\Delta G_2 \approx 0.0035 $ GeV$^4$. E.g. $T_c(0) =0.27; 0.19; 0.17$ GeV for
$n_f=0,2,3$ respectively.
