What is wrong with this picture

Status
Not open for further replies.
aftershock said:
I myself have only seen it in the older type insulation such as TW.
Click to expand...

The only "modern" insulated TW I have seen that is still manufactured it #8 green for "pool bonding applications." It was stocked at the supplier I used to work at, though I don't recall ever selling any, and we sold a ton of pool related supplies.
 
David, welcome to the forum. :)

David C. Adkins said:
Everyone of the cables should be sleeved with flex after leaving the bottom of the floor joist.
Click to expand...
Code reference?

That # 8 ground wire should be in half inch emt, if it were # 6 and came in the top, I would allow it.
Click to expand...
Again, code reference?

That SEU or SER cable feeding the panel has traveled some distance from the meter, so there should be a main on the other end and this should now be a sub-panel with a separate ground and neutral bar.
Click to expand...
I agree, this appears to be in violation of 230.70(A)(1) to me. However, different states have differing interpretations of this section. Some areas allow specific distances, such as 20'.
 
Volta said:
334.15(C) ". . . NM cable installed on the wall of an unfinished basement shall be permitted to be installed in a listed conduit or tubing or shall be protected in accordance with 300.4 . . ."
Click to expand...
"Shall be permitted" is not a requirement to encase it, it's permission to. We can still run running boards down to the panel by the NEC.


Volta said:
250.64(B) ". . . Grounding electrode conductors smaller than 6 AWG shall be in rigid conduit, intermediate metal conduit, rigid metal conduit, electrical metallic tubing, or cable armor."
Click to expand...
Right - but he was specific to EMT, which is what I took issue with. :)

Volta said:
I don't see anything that is necessarily wrong with David's comments. I put plywood behind basement panels. The NM is not "installed on the wall" that way.
Click to expand...
Maybe I'm not picturing what you're saying, but it sounds like "NM on a wall" to me. :D
 
Running with plywood

Running with plywood

George Stolz said:
We can still run running boards down to the panel by the NEC.
Click to expand...

Maybe I'm not picturing what you're saying, but it sounds like "NM on a wall" to me. :D
Click to expand...

Just assuming that the plywood I usually anchor to the wall (for ease of stapling) and then mount the panel to suffices as a running board.

Looking quickly, I don't see exactly what is being referenced in 300.4.
 
peter d said:
Obviously my comments about axes and chainsaws damaging the NM cables are intended to be humorous, but they are true as well. What is going to cause damage to those cables and the GEC? Nothing, absolutely nothing.
Click to expand...

You would think that to be the case, I went to a friends house the other day and in the basement ( almost 7' ceiling hight ) there was about 15 metal cloths hangers with shirts on them hanging from the K&T that was running trough the floor joists. The nice part they were on both opposing conductors and the hangers could touch each other, at least the insulation had not failed yet. Unfortunately my camera was at home. I did remove them from the K&T.
 
paul said:
They make up to a #2 Tinned copper used for ground rings. Real fun stuff when you have to pull it through PVC to a ground bar.



That looks like the #6 solid that is often used by the phone companies for their grounds.
Click to expand...

Phone and cable companies use #10 here.
 
paul said:
I should specify. They also use #10 on residential here, and #6 to connect to their ground bars in commercial buildings.
Click to expand...
My house the Telco used #10, and have seen #8 green on apt buildings. I have also been required in some commercial data rooms to install 250MCM as grounding means - but not solid... But have done #4 solid for the same. I have not seen #2 solid in some time, but have stretched it over-head way back in my past. And I don't think they make anything larger than that in solid - but I could be wrong.
 
e57 said:
My house the Telco used #10, and have seen #8 green on apt buildings. I have also been required in some commercial data rooms to install 250MCM as grounding means - but not solid... But have done #4 solid for the same. I have not seen #2 solid in some time, but have stretched it over-head way back in my past. And I don't think they make anything larger than that in solid - but I could be wrong.
Click to expand...

I have a roll in the truck right now, it is best for straight open runs. I used to use a lot of the tinned #2 solid for ground rings, lots of cad-weld shots, and ground rods.
 
WL LeSueur CPQ, CBCP Atlanta,Ga.

WL LeSueur CPQ, CBCP Atlanta,Ga.

1.) Main Ground bonding jumper (screw) between neutral and ground is missing unless it is hidden under the grounded conductor (service neutral ) protruding through the lug in the first picture.
2.) Grounding electrode conductor from panel to water pipe and/or earth ground rod is missing.
3.) Maybe conductor size/breaker size issues as previously stated. Depends on wheather or not the circuit is feeding HVAC loads or not
 
Status
Not open for further replies.
Top