jaggedben
Senior Member
- Location
- Northern California
- Occupation
- Solar and Energy Storage Installer
How are others transitioning from PV wire to THWN-2?
I did some more research on the web and discovered the Wago 221-612 lever wire connector. I am not sure if it will work with the larger diameter of the PV wire, but I am going to get and sample and try it out. The #10 AWG size is new for this product line. If it works well, it looks like it might be a good solution.
Only rated for 450V? Okay for micro-inverters but not strings, or optimizers. :happysad:
Also, are they any more suitable for wet locations than other options mentioned?
If your inspector is not demanding wet location connectors then I think the Buchanan splices are superior. They have a higher temp rating, too, and having looked them up at 105C I take back my earlier comments about that. (For wet location connectors, I can only think of dry-conn wire nuts).
Is the interior of a NEMA3R, 4 or 4X enclosure in a wet location, also considered a wet location?
I'm just not sure why I'd use those over Buchanan splices or wire nuts in any case, even if they were properly rated for the voltage. Not sure what would make them superior. The Buchanan splice requires a tool and takes a little more time but produces an almost infallible connection. The Wagos are basically a back-stab design, right? I've seen a lot of complaints about that sort of thing. And I assume they're more expensive than wire nuts.