Alwayslearningelec
Senior Member
- Location
- NJ
- Occupation
- Estimator
I believe a "stub/stick" of conduit would be required when running vertical on wall but do the conductors need to be enclosed in a raceway for the entire length??
Conduit Req.?
- Thread starter Alwayslearningelec
- Start date
Fred B
Senior Member
- Location
- Upstate, NY
- Occupation
- Electrician
Are you referring only to the GEC? Review 250.64(B). Securing and Protection Against Physical Damage.
If not exposed to damage it can be installed without conduit or other protection even exposed on surface. As always what constitutes "Subject to damage" is up to debate and may be at the discretion of the AHJ. (not saying it is right but lacking clear definition it is what it is.)
If not exposed to damage it can be installed without conduit or other protection even exposed on surface. As always what constitutes "Subject to damage" is up to debate and may be at the discretion of the AHJ. (not saying it is right but lacking clear definition it is what it is.)
- Location
- New Jersey
- Occupation
- Journeyman Electrician
No it does not need to be in a raceway. It would be nearly impossible to damage a #3/0 or #4/0 copper conductor that is strapped to the wall. That looks like typcial overkill boiler plate stuff from the dirt worshipers. And why is there a bare conductor run in the slab?
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Yup, these boiler plate guys like to waste peoples money. As if the connections to miles of rebar in the footing weren't sufficient.I especially like Note 3. Depending on your soil conditions you might need a truck load of ground rods
Fred B
Senior Member
- Location
- Upstate, NY
- Occupation
- Electrician
Looks like they are quoting 250.52(A)(3) for a CEE. But they are showing it in the slab not the footer as would be required for the UFER.
I think Mike had a video showing that trying to get even to the 25ohm limit was over 100ft of rod and still going.I especially like Note 3. Depending on your soil conditions you might need a truck load of ground rods
LarryFine
Master Electrician Electric Contractor Richmond VA
- Location
- Henrico County, VA
- Occupation
- Electrical Contractor
Yeah, good luck complying with that one!I especially like Note 3. Depending on your soil conditions you might need a truck load of ground rods
If two rods trump 25 ohms, shouldn't ten rods trump 5 ohms?
- Location
- New Jersey
- Occupation
- Journeyman Electrician
It actually shows both connecting to the rebar and in the slab.
Fred B
Senior Member
- Location
- Upstate, NY
- Occupation
- Electrician
Saw that, not required.
Had one person that did this in an attempt to sort of create an EP bond to the basement slab, not sure what for.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
I've seen this before in commercial buildings with poured concrete construcution where they run bare copper conductors within the slab.
electrofelon
Senior Member
- Location
- Cherry Valley NY, Seattle, WA
Absolutely ridiculous.
- Location
- New Jersey
- Occupation
- Journeyman Electrician
Which part there's a lot to choose from.
- Location
- Bremerton, Washington
- Occupation
- Master Electrician
To the OP be careful on your bid, there are many issues with this drawing. Note 3 requires 5 ohms ground resistance, that may not be possible. The correct way is to have the soil resistiviy tested and then design the grounding array. There are other issues such as a 3/0 to ground rods when only a 6 is required