Did you read 250.32?if it were a new feeder would it be a 3 or 4 wire?
Roger
Did you read 250.32?if it were a new feeder would it be a 3 or 4 wire?
if it were a new feeder would it be a 3 or 4 wire?
this part ?? or, what about 250.32 did i not read ?Did you read 250.32?
Roger
this part ?? or, what about 250.32 did i not read ?
250.32(B)(1)
Any installed grounded conductor shall not be
connected to the equipment grounding conductor or to the
grounding electrode(s).
as-is, OP says "a grounding rod was used". hmmm, sounds like a violation ?<-- note what is or is not used, etc.
A grounding electrode would be required for any code cycle metioned in this thread, whether or not an EGC is required is dependent on the code cycle in place when the feeder was installed.
Roger
"a" grounding electrode? just one ?
There are no safety issues with a combined grounded/grounding conductor to a separate structure as long as there are no parallel paths. The reason I think a dedicated equipment ground is a good idea is the same as what Roger said. It's also why I said there should be an exception for meter pedestals in that other thread. Nobody is ever going to run a gas line or water line out to their electric meter.in another conversation around 3-wire as a feeder
Quote Originally Posted by ActionDave View Post
I think the EGC to a separate strutcure is a good rule. There should be an exception to a meter pedestal though.
imho, the nec might allow it, but if you can pull a egc wire then do it.
did OP ever say to what nec code the existing feeder was installed to? is it on a permit card?
Where are you buying dryers with factory provided cords and cord caps?ok, so, if i have a older 3-wire 240v dryer and i buy a new dryer that has a 4 prong plug, would it be ok to keep the 3-wire BC, swap the recept to a 4-wire and just tap the egc into the N inside the recept box? certainly much less likely vs feeder that anyone would parallel anything up to that recept, so from a safety hazard view its perfectly safe for anything plugging in since the old 3-wire is using N as egc ?
ok, so, if i have a older 3-wire 240v dryer and i buy a new dryer that has a 4 prong plug, would it be ok to keep the 3-wire BC, swap the recept to a 4-wire and just tap the egc into the N inside the recept box?
Where are you buying dryers with factory provided cords and cord caps?
Since you already have a cord on the old dryer just swap it with the new one.
No- do not do that- you could end having it concluded by someone else that there is a 4 wire ckt there when there is not. Continue to use the old 3 wire receptacle if keeping the unaltered 3 wire feeder.
You install a 3 wire cord on the dryer and make sure the ground jumper between frame & noodle inside the the dryer is attached in situations where there is existing three wire feeder & rec/250.140 exceptions.
for a std 3-wire BC with new "4 wire" dryer, you would take the green egc and tie that to the N terminal on the dryer terminal block, essentially making the dryer like the old one. and the reason why new installs require true 4-wire BC is ??
for a std 3-wire BC with new "4 wire" dryer, you would take the green egc and tie that to the N terminal on the dryer terminal block, essentially making the dryer like the old one. and the reason why new installs require true 4-wire BC is ??
if its now changed for a safety reason, then pulling a egc (if reasonably doable) out to a old 3wire feeder sub, makes sense to me to just do it. the same safety issue that exists for a 3wire dryer also exists for the items plugged into a 3wire sub, right??One issue w/ the old 3 wire setup was the shock hazard that could arise if the neutral was compromised. With that being said, idk how much of a factor that risk played into getting the code changed for those ckts roughly 20 yrs ago- the NEC considered the 3 wire practice reasonably safe for an awfully long time and you would think it would have been changed sooner had there been enough incidences of shock/electrocution.
i cant see arguing about why nec kept things in nec code for a long time, but its now changed for the better, and you keep arguing that it was safe for the 1st 50yrs of nec code, so its safe today to. it was changed for a reason.
........... and for many years considered a safety hazard.:huh:
I was pointing out the fact that the NEC did indeed consider that setup safe for dryers for a long time-
........... and for many years considered a safety hazard.
an existing 3wire dryer outlet is likely a burden to achieve a homerun egc. so what about tying dryer egc to another egc point vs keeping egc tied to N ?