enblethen wrote:
I would find out what size wire was used and wiring method.
Just because your surge guard sees 120/240 volts does not mean it can handle 50 or 30 amp.
It should be wired with 6/3 with ground and connected to a 50 ampere double pole breaker. That is using type NM cable.
So my answer is maybe!
If an electrician did the work, as the poster claims, there should be little need to worry. 50A outlets are pretty common in household wiring (it's the standard for an electric range, after all). There's more need for caution with 30A RV outlets, which many electricians rarely (or even never) encounter.