  We describe strongly attractive carriers in cuprates in the framework of a
simple quasi-one dimensional Hamiltonian with a local attraction. In contrast
with the conventional BCS theory there are two energy scales, a temperature
independent incoherent gap $\Delta_p$ and a temperature dependent coherent gap
$\Delta_c (T)$ combining into one temperature dependent global gap
$\Delta=(\Delta_p^2 +\Delta_c^2)^{1/2}$. The temperature dependence of the gap
and single particle (Giaver) tunnelling spectra in cuprates are quantitatively
described. A framework for understanding of two distinct energy scales observed
in Giaver tunnelling and electron-hole reflection experiments is provided.
