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Customer reviews for Southwire 12/3 STW 9" Twist to Lock Adapter with NEMA-15 Plug and L5-20 Receptacle for
Southwire 12/3 STW 9" Twist to Lock Adapter with NEMA-15 Plug and L5-20 Receptacle
4.6 out of 5 stars
stars
13 ratings13 reviews
  1. 5 stars85% (11)
  2. 4 stars0% (0)
  3. 3 stars8% (1)
  4. 2 stars8% (1)
  5. 1 star0% (0)
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Showing 1-10 of 13 reviews
Sep 18, 2026
Reviewer name: Dawn
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

[This review was collected as part of a promotion.] works as intended. worked well with our generator

Review from walmart.com
Helpful?3TST0GX2HLRT20883068238
Mar 20, 2026
Reviewer name: Arnav
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Works well

[This review was collected as part of a promotion.] Works well for plugging 20amp L5-20 into standard 15amp sockets. Don't use this if your circuit cannot support 20amps.

Review from walmart.com
Helpful?3TST0GX2HLRT20883068238
Oct 10, 2026
Reviewer name: AprilS
5 out of 5 stars
5 out of 5 stars review

Adapter is safer

[This review was collected as part of a promotion.] I have a Genimax generator and this generator adapter is going to work perfectly this winter. It's a safer way when using my generator so I am excited to use this when it's needed. We tend to loose power a lot in the winter months due to snow and ice storms.

Review from southwiretools.com
Helpful?3TST0GX2HLRT20883068238
Oct 1, 2026
Reviewer name: BrandonNeftalyS
5 out of 5 stars
5 out of 5 stars review

Functions well

[This review was collected as part of a promotion.] I got this a few days ago and it has been really helpful and is a convenient and essential tool. It has a compact design and is very easy to use. I think that is a valuable option for home and work. I highly recommended it because the build quality is very good and it is heavy in a good sense.

Review from southwiretools.com
Helpful?3TST0GX2HLRT20883068238
Sep 30, 2026
Reviewer name: sofiaG
5 out of 5 stars
5 out of 5 stars review

works good!

[This review was collected as part of a promotion.] works great! it does the job. I like that it converts without adding extra cord. The quality is also amazing. It is definitely heavy duty. The twist lock also keeps it secure even with vibrating machinery. Overall I totally recommend!

Review from southwiretools.com
Helpful?3TST0GX2HLRT20883068238
Oct 17, 2026
Reviewer name: SergioS
5 out of 5 stars
5 out of 5 stars review

Great material resistance

[This review was collected as part of a promotion.] It's it has a great material and resistance of the cable. Also, it's a little bit heavy, but it's great and the size is perfect for my radiator. and easy to plug-in, which I like.

Review from southwiretools.com
Helpful?3TST0GX2HLRT20883068238
Sep 30, 2026
Reviewer name: VolodymyrH
5 out of 5 stars
5 out of 5 stars review

Great quality adapter

[This review was collected as part of a promotion.] This generator adapter works great and I must say is well made! The connection fits securely and it's great for heavy duty cables. Good quality !

Review from southwiretools.com
Helpful?3TST0GX2HLRT20883068238
Sep 29, 2026
Reviewer name: HannahK
5 out of 5 stars
5 out of 5 stars review

Recommend

[This review was collected as part of a promotion.] Exactly as expected. Very well made and fits well. Easy to store and forget about. Value is there also for the quality you're receiving. Highly recommend!

Review from southwiretools.com
Helpful?3TST0GX2HLRT20883068238
Sep 30, 2026
Reviewer name: AshleyK
5 out of 5 stars
5 out of 5 stars review

Very heavy duty

[This review was collected as part of a promotion.] This generator adapter is very good quality and heavy duty. We lose power often and this is perfect to use with our generator. It's 3 prong and 9 inches long so it's perfect for an extension cord.

Review from southwiretools.com
Helpful?3TST0GX2HLRT20883068238
Oct 10, 2026
Reviewer name: SameemS
2 out of 5 stars
2 out of 5 stars review

Can not recommend this product !

[This review was collected as part of a promotion.] The south wire generator adapter is durable. However, I searched far and wide and couldn't find anything compatible with it. Another option would be to connect it to an inlet box but you would then also need a manual transfer switch receptacle. In my searches I found 20 amp inlet boxes which had to be special ordered but the transfer switch were 30 amps

Review from southwiretools.com
Helpful?3TST0GX2HLRT20883068238