Mister Fixit
New member
- Location
- Westerlo, NY
With which code revision did it first become necessary to use a four-wire branch circuit when installing residential electric ranges circuits?
NEC changes
- Thread starter Mister Fixit
- Start date
- Status
Mvillines
Senior Member
- Location
- Western KY on the Ohio River
This change was introduced in the 1996 cycle - 250.60 later moved to 250.140..applies to rangers and clothes dryers.
Pierre C Belarge
Senior Member
- Location
- Westchester County, New York
Funny you should point this out. I do see in existing installations where this portion was not adhered to when initially installed.
An added question:
Should an inspector write a violation to the homeowner when he/she sees this portion of the requirement not properly installed?
You are correct, the wording "this section shall apply to existing branch-circuit installations only" was removed and became an exception in 2005, but the requirement was in place.
An added question:
Should an inspector write a violation to the homeowner when he/she sees this portion of the requirement not properly installed?
I think I would point it out to the HO and suggest that it be fixed, although if Bennie were here, he'd probably say changing to a 4 wire circuit doesn't add any safety value. :smile:
Roger
RICK NAPIER
Senior Member
- Location
- New Jersey
I come across situations where they service is changed installing an outdoor main only to fail because the old main panel now is a sub panel with three wire feeds to range or dryer.
Mvillines
Senior Member
- Location
- Western KY on the Ohio River
Funny you should point this out. I do see in existing installations where this portion was not adhered to when initially installed.
An added question:
Should an inspector write a violation to the homeowner when he/she sees this portion of the requirement not properly installed?
How many have the older code books?
Now that we are no longer under the pre 1996 NEC (at least I don?t think anyone is) this is a mute conversation unless violations are issued. I was under the understanding that pre 1996 installations the conductors feeding clothes dryers and ranges etc could be three insulated conductors, whether originating in the service panel or a non-service panel. SE cable could have an uninsulated concentric grounded conductor if it originates in the service panel. Where does it say you have to install four conductors if originating in a non-service panel where three insulated conductors are installed?
1993 NEC
250-60 ..........., shall be permitted to be grounded to the grounded circuit conductor if all of the conditions indicated in (a) through (d) below are met.
(c) The grounded conductor is insulated; or the grounded conductor is uninsulated and part of a Type SE service-entrance cable and the branch circuit originates at the service equipment.
- Status