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Ok, understand. Let me try to explain. The white wire (neutral) is the other half of 120 volts. Hot and neutral make a complete circuit. The neutral wire, actually carries the same current as the hot wire. It is the return on the AC cycle of power. So, since grounds are for short circuit and protection, if you use the white wire connection and something happens, you could actually charge the ground with voltage and it is now dangerous and not safe.
The GFCI on the circuit will assist for personal protection and allow changing receptacles to a 3 prong, but there is still no ground present. If a ground is wanted, the code now allows the installation of a single ground wire to attach to the receptacle.
Here is the writing of the code on that subject:
250.130(C) Nongrounding Receptacle Replacement or BranchCircuit Extensions. The equipment grounding conductorof a grounding-type receptacle or a branch-circuit extensionshall be permitted to be connected to any of the following:(1) Any accessible point on the grounding electrode systemas described in 250.50(2) Any accessible point on the grounding electrode conductor(3) The equipment grounding terminal bar within the enclosurewhere the branch circuit for the receptacle orbranch circuit originates(4) For grounded systems, the grounded service conductorwithin the service equipment enclosure(5) For ungrounded systems, the grounding terminal barwithin the service equipment enclosure250.50 is the panel and ground electrodes like rod, rebar,main ground wireto water piping etc.
Let me know if any other information is needed, just reply. Thanks
--- If something happened?? like what. The white wire us still connected to ground!
You did not answer my question. How can the ground terminal be hot as long as it is tied to the white wire which is tied to ground?
Well Sir, a circuit could become completed from a Hot, (black wire) to a ground, (maybe the housing of a lamp, with me in between and that would be bad), but this could happen with any properly connected circuit. So why is it worse to be groundes through normal ground wire than thru a grounded white wire.
In a normal properly system, it cannot connect to ground because it will trip the breaker or blow the fuse.
Please understand, the ground at your house originates at your panel and does not come from the utility company.Ground at the panel connects to either a ground rod outside, metal water piping that goes outside in the ground tothe street and or both on older homes.Ground wires are totally separate throughout the house.Yes, on older homes prior to the new codes, the neutral connects to the same bar as the ground.But that is only at the panel and cannot even touch anywhere else on the receptacle and light circuits.There is a separate wire for that connection when running to receptacles and lights etc. with a grounded system.So, it is IMPOSSIBLE to create the same issue as using neutral for ground because of theextra wire.
Just for clarity, the neutral is a GROUNDED CONDUCTOR and is designed to carry current (other side of power) The ground wires are not and should never be used as such.
I am sorry if there is some reason that you do not understand the seriousness/dangers of using the neutral on a circuit for the grounding also.I do believe the desription and image posted show and explain why it cannot be done (connecting to neutralfor use as a ground).40+ years in the industry and qualified and licensed by the state to all electrical work.If you were to connect the ground post to the neutral, you will put yourself, any friends, or family in danger of electricution.It is extremely dangerous, illegal and will eventually hurt or kill someone.
I do appreciate an upgrade to good rating.--- Unsure of how else to explain, that connecting the ground screw of a receptacle to the neutral wiring, is not grounding the receptacle, but allowing a different path for return power to get enter the system through someone or something if and when a mere loose connection in the neutral circuit happens.
P.S. As long as we are exchanging qualifications, I have a BS degree in electrical engineering from Colorado State University, 1952. I then worked for Sandia Labs. for 40 years in electrical engineering. I think I know the subject. Russ
Ok, thanks. Take care Russ