I just got a hand me down Maytag range from a co-worker, model MER5765RAS. It came with a 4-wire cord, so I assume I can just wire the 3-wire cord from my old range to the new Maytag, with that said do I need to put a jumper from the neutral terminal to the chassis ground on the range, or just leave the chassis ground un-connected.
Hey JW, what if the range (or electric dryer) was fed from a subpanel? I had an inspector tell me once that I had to have that jumper (bond) removed at the appliance, which was an electric dryer. I had it fed from a generac standby panel. I would think that if it was fed from a subpanel you would keep them separate, correct?
If it was used on a 4 wire circuit, then the bond would have been removed.
Yes I am A Pirate-Jimmy Buffett
That inspector was wrong in saying that the installation was alright. If you ran 10/3 with ground then you should have installed a four wire receptacle and removed the bonding jumper in the dryer.
The equipment grounding conductor is required to be installed in the same cable or raceway as all the other conductors so the green wire you installed is a violation also. This must have been a home inspector doing an inspection for the buyer.
Unless the range was modified , the Neutral is connected to ground inside of the range.
That range was made for a 3 wire plug, If it has a 4 wire plug then it could be modified, Against the Manufacture instructions.
The ground wire will normally go to Neutral at the service entrance, so unless the Neutral wire breaks, it is no big deal.
Please Correct me if I am wrong. Old Dogs can learn new tricks...
The installation instructions on every range and dryer manufactured today will state to remove the bonding jumper in the dryer when a 4 wire receptacle is used. This coincides with what is mandated in 250.142 of the NEC. These instructions are included in the UL Standard used to manufacture the appliance
The NEC will mandate that any new circuit installed for a range or dryer be made with a 4 conductor circuit.
By exception an existing 3 wire circuit can remain as long as it originates in the service equipment and if NM-B cable it must have an insulated white conductor or if it is SE cable the neutral is allowed to be bare.
When You need to Modify OLD equipment to meet New code, You are just wasting your time, and money.
It becomes no safer, Works NO better.
I see it as a waste of copper...
If all homes were inspected and installed to code, You would Never Buy or Sell a house.
Code is a good place to start. But may Not always be the safest way to go.