I recently purchased some premade 100ft L6-30 cables from a very reputable entertainment cable dealer and was surprised when I received 12/3 SJOOW wire. I always thought 10/3 cable should be used for 30 amp cables, and was also surprised they used SJOOW instead of SOOW. When I purchase Edison & Stage-Pin from this dealer I always get SOOW cable. I re-read the invoice and they DID put 12/3 SJOOW, I just missed it as it was in with some other line items. Thoughts on this? Do I have a case to get them remade because they're using 12/3 instead of 10/3? Or is it my fault regardless because I approved the quote? It's not a huge deal as it's not a large amount of cable and I can just replace the wire myself if necessary. Just wondering if this was typical or I should say something. Thanks for your advice.