MohammedSF wrote[
Am I protected from electrical surge if I connect the ground line of the PSU to the ground ? and where to find such safe ground line to connect at ?
almost all good electronic equipment has built in surge arrestors mainly MOVs and/or PCB spark gaps, but in lebanon they are useless since we don't have a ground terminal connected.what i do is bridge the equipment's ground to the neutral and i am protected :)
warning! do not try this yourself unless u know what you are doing, cause it may cause serious trouble(i don't advice doing it).
if you cant find surge arrestors or a good ground you can also install couple MOVs(metal oxide varistor) which are cheap small electronic components that can be bought from katranji between the neutral and live line entering the house or the phone line or whatever but you should get the correct rating for example for the electricity line it should be higher than the Vrms you can get something like 400V MOV and it should provide u some protection.