This study delves into the intricate relationship between Peclet number, pore throat size, and temperature on the electrical conductivity of fluid-filled straight channels in three dimensions, employing simulation techniques. Results revealed a quadratic increase in conductance with porosity under steady-state conditions across all Peclet number ranges examined. Conductivity remained constant with porosity for each Peclet number. The rate of increase in conductivity diminished with Peclet number. Non-linear increases in conductivity were observed with temperature in transient cases, with a threshold temperature marking the onset of conductivity. Conductivity experienced augmentation with the observation time throughout the temperature range considered. In the linear regime, conductivity showed a linear rise with temperature, although the rate of increase dwindled with elapsed time suggesting conductivity attains saturation at steady state