I have already bought, used and tested a Leviton 2711 plug which turned out to be much better quality than the cheap one that came with my alternator. I just tested this for connector compatibility and it seems to me to be a very good fit and probably a very good electrical connection. In fact, there was a click as I twisted the plug while the outlet on my generator was being "warmed up". At first I thought I was having trouble unplugging, but plugging and unplugging turned out to be more difficult than I expected. That's a very strong connection. It mounts in any standard electrical box and requires a pad with a 1.55" diameter hole (measured with vernier calipers).
Leviton 2711 Industrial Grade 30 Amp Locking Plug - NEMA L14-30P, 125/250 Volt, Grounding, Black-White
9 Review
Smart socket ELDEV WI-FI 16A ELDEV (Alice, Google Home, Marusya) Tuya protocol, works without a gateway, Smart Plug
15 Review
Enhance Your Home Automation with TP-Link 🏠 KP100KIT Kasa Wi-Fi Smart Plug Slim Edition 2-Pack
8 Review
🥜 Securifi Peanut Smart Plug - Easy 1-Minute Setup & Remote Monitoring/Control of Lights and Appliances with Free iOS/Android Apps and Browser Interface - White
9 Review
💡 High-Quality Advance ICN-4P32-SC Electronic Fluorescent Ballast: Ideal for 4 Lamps, 32W T8, 120/277V
3 Review
Wireless Electronic Ballast Interface Certified
8 Review
⚡️ Sunpark LC-12014T (1) FC12T9 32W Circline (1) 2D 38W (1) FC16T9 40W Circline (1) FC9T9 30W Circline Lamp Compact Electronic Fluorescent Ballast with Circline Lamp Plug 120V
7 Review
💡 Electronic FL Ballast ICN-4P32-N (Formerly ICN-4P32-SC) for 3-4 F32T8 F40T8 F17T8 Lamps, 120V/277V Compatibility
5 Review