Have a ground lug which indicates CU/AL. If I want to combine a copper an aluminum ground wire under the same screw, does the CU/AL reference meet the requirements of 110.14 for a "device intended for the purpose and conditions of use"?. An anti-oxidant (Noalox) will be used on the AL wire. This came up as an issue during a recent inspection where the AHJ insisted on a separate lug for each type of wire.
CU and AL in same lug
- Thread starter csoc64
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ptonsparky
Tom
- Occupation
- EC - retired
Inspector was correct. Either or, not both.
In the real world, i have seen it done with no apparent problems while the next job will make you a firm believer in not mixing the cu & al, let alone two wires in one lug.
In the real world, i have seen it done with no apparent problems while the next job will make you a firm believer in not mixing the cu & al, let alone two wires in one lug.
JDB3
Senior Member
- Location
- San Antonio, Texas
No mention was made if the lug is listed for 2 wires (that I saw).
kwired
Electron manager
- Location
- NE Nebraska
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- EC
Even if it were you generally can not mix copper and aluminum in the same port - unless specifically designed/listed for it - I don't know of any though that are designed for it.
Fulthrotl
~Autocorrect is My Worst Enema.~
- Occupation
- E
i've transitioned aluminum to copper in a hypress butt splice, but the splice is rated for AL9CU,
and the dissimilar materials don't touch each other. i don't think anywhere that would be a good idea.
the material characteristics aren't gonna squish together well.
kwired
Electron manager
- Location
- NE Nebraska
- Occupation
- EC
Technically, they were not in the same port.
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