In my home I have the old 3 wire Dryer and Range connections.
Looking at my CB service panel; my neutrals (white) and my ground wires (bare copper) connect to the same bus bar. Main service panel - this seems up to code for all intents and purposes (someone who is more knowledgeable correct me if I am wrong). I know secondary panels they must be separated.
So I have some questions here to enlighten me a bit more:
I have a Dryer and a Range Receptacles with the 3-Wire hookup (H-N-H) and I would like to make them 4 wire compliant (H-N-G-H).
I could run 4 wires back to the panel and connect my neutral and ground to the same location on the panel and of course the two hots to the hot lines.
What is the the difference doing that versus say connecting the ground lead to the neutral at the receptacle ? They end up at the same place. I know you should not do that; of course I know that people do this at the outlets in some homes to pass an inspection. I have had someone tell me - just connect the wire to a metal pipe .. but that smells bad to me..
While neutrals should not carry current - the possibility is that they can in a failure situation or a bad installation, so just having a separate wire go back to the bus bar and call it a 'ground'; how is that making a difference?
I was reading here What happens if you don't bond neutral and ground in a main service panel?
The answer does not clarify this for me exactly - it states advantages and disadvantages but never specifies exactly advantage / disadvantage of what .. (bonding in the service panel or not bonding in the service panel)??
I guess what I am really asking is how does it make it safer to have 2 wires go back to the same bus bar from the dryer receptacle and Why is it not safer to have a true separate ground at the main service panel where grounds are grounds and neutrals are neutrals ?