Brad,
Technically you're correct about the ground. But ANY ground is better than none. Our rigs are designed the way they are and have passed all Federal Electrical Rules available according to RVAA. A surge protector would have helped in this case IF the failure was due to temporary surge (possible 240 V due to loose neutral) from the park pedestal. If there happened to be a loose neutral inside the rig then a surge protector would not have helped if connected to the park pedestal.
Most RV parks will not to admit to any possible failure on their part.
Orv
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