As to service, it still must have a disconnect or plug so no danger to service. Thankfully they did use a gfi breaker. I do think in an emergancy to kill power they might be confused so is a small hazard.
This is minor compaired to other issues I had to fix.
It had a central air with heat wired to inside panel 60 amp 2 pole. So far looks good. Disconnect outside has 60 amp breaker. Turned heat on (electric strip not heat pump) , did not have meter with me so with rest of house off turned heat on and watched time and digital electric meter. In 30 minutes it used about 7 kw. Suspected either poco meter wrong or 15 kw of heat. Yes had 3 5kw strips.
It ran fine for about an hour till breaker triped. Easy fix ,just remove 1 of them and keep as a spare.
No nead in FL for more than 10 kw in 1700 foot home. Believe it or not the original owner put up with this for 15 years. Actually it could work being it would not likely ran more than 30 minutes without reaching temperature needed. Breaker would have time to cool off in between.
Next issue had me scared. Only 2 smokes ,not interconnected, 1 in hall other in living room, none in bedrooms. Yes ,wired in new ones and interconnected all. All bedrooms now safe
No GFCI receptacle for one of the bathrooms. Yes easy fix but is on a 15 amp lighting circuit so likely be some problems in future.
They met code of wall switched recepticle. Only issue was they switched both haves not a half hot.
Nothing much surprizes me with mobiles