NEMA 14-50 GFCI breaker tripping even at 18A using Mobile Connector

[pae1andonly]

I have installed many NEMA 15-50 circuits and never used a GFCI specifically for this reason. You should be just fine with a regular breaker.

important to note that you absolutely should be properly torquing electrical connections. If you don't have a torque driver (or appropriately sized torque ratchet).

also a really good idea to inspect new circuits under load with thermal cameras if you can.

In my other-than-humble opinion, this post is gold. Simple, solid advice from experience. With important safety details. Nicely done.

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[Zwick]

In my other-than-humble opinion, this post is gold. Simple, solid advice from experience. With important safety details. Nicely done.

Agree wholeheartedly! And that inspection should include the breaker box itself. I have seen older boxes that would technically accommodate the 50A breaker, but could not safely handle the long duration 32A load pulled by the mobile charger.