Here's the answer

May 11, 2020   photos  

First of all, to answer this question we should say that in electrical circuits faults, glow or hot spot due to the following reasons based on poor insulation, failure of protection, Circuits with 100 percent loading round the clock, Corrosion and improper tightness of clamps and bolts. Open space available for electrical equipment and panels Megger value very low. In addition to this, one more reason is that overload may be they never use proper wire depends upon load. Finally, over loaded and losses connection and not properly connect natural wire /loose connection.