Reading through the original post, it sounds like the generator is being "turned off while still disconnected and the "arcing" is happening as power is thrown at the switch...
There's a caution/warning/note in every generator operating manual that I've read stating to disconnect ALL generator loads and allow the generator to run "with no load" for several minutes (to cool) before turning it off...
If, what you're doing is "turning off the generator with the remote control, then you're disconnecting the generator while under load, and as the transfer switch disconnects, it's arcing, as the generator output falls below the rated power to keep the transfer switch activated.
If that's what's happening, it's only a matter of time before you destroy the generator or burn up the contact plates in the transfer switch.
I'd suggest, if you're going to use the remote control to start/stop the generator, turn off the trailer power center main circuit breakers first, that will remove the load (or most of it) to prevent the arcing. Better year, unplug the trailer at the generator power panel, let the generator run for the recommended time listed in your operator's manual, and then just "flip the OFF switch at the generator.
When using the remote control on generators with a built in "timed delay to remove power and shut down the generator with the remote control, usually what happens is you push the remote control "OFF" button, the generator drops power output and the engine runs for 10-15 seconds (maybe more) and then the engine also shuts off. What's probably happening is you push the remote control off button while the transfer switch is active, as the generator output goes to "OFF" the transfer switch, still under load, arcs as it switches to shore power (even if no shore power is connected, it switches to "not generator" as the power drops. The arc is part of the "under load" condition inside the transfer switch.
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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