Updating 2 wire outlets
As I interpret the code, several outlets on the same branch circuit can share the same separate ground wire back to the panel but a different branch circuit needing a separate ground wire needs it own all the way to the panel. You can run a separate ground wire from an ungrounded outlet box but this ground wire has to go all the way to the panel (or to the fat ground wire between panel and ground rod/water pipe if it reaches that first).This separately strung ground wire can follow the circuit conductors back to the panel exactly, approximately, or vaguely.If an equipment failure occurred that energized the metal water piping it could potentially take a different path to ground and cause injury along the way. Maybe but it would not be the safe method to add an EGC to outlets.thanks for the replies and the code citation in particular.does it seem silly to run merely a ground wire back to the panel?I am in the process of slowly updating the wiring in my house.The service panel is new as of 1995 and the wiring is a mix of updates, all the original knob & tube is gone (well i did find one 5 foot run from a junction box to a receptacle that I replaced) I found a couple of two prong outlets that had - 15 year old 3-wire cable going to them but the ground was simply tied off.Even if there is a straight path to ground there are three other factors used to make the requirement in E3508.1.1.
After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.I have an old house that has quite a bit of 2-wire running to most of the outlets.I am amidst a major rennovation project and would like to know if the following practice meets code: Properly ground new 3-wire cable at the panel and run the new cable up to first floor ceiling (assume proper cable running 1.25" distances... Then splice the new 3-wire to the 2-wire (already connected to an existing outlet and running through a floor/wall) in a proper junction box, and additionally splice a single ground wire in the junction box to the 3-wire and run the single additional wire to ground at the outlet.It's not like we're talking about pulling a 4/0-4 MC thru the wall You can run a separate ground wire from an ungrounded outlet box but this ground wire has to go all the way to the panel (or to the fat ground wire between panel and ground rod/water pipe if it reaches that first). Seriously consider selling the property and moving.This separately strung ground wire can follow the circuit conductors back to the panel exactly, approximately, or vaguely. Fixing, er, rebuilding, the house will become a money pit, er, time pit having to find, line up, and watchdog contractors (and also stays a money pit).