50 amp wiring

Not always at the electric meter. In facilities where the owner of the facility reads the meter and charges for usage, the neutral and ground are separated.
Connection between the neutral and ground is accomplished only at the service connection point.

RV electric boxes (the box in the RV) should always be wired as sub panels. In a RV, the ground (green)wire should not be connected to the common (white) wires. There should be bars or bonding points for all white wires in the electric box. The green wire of the AC cable should go directly to the chassis of the RV. Never should the twain meet.
Likewise the box that the RV plugs into is a sub panel. The only place the white and green are bonded is on the MAIN electric box, normally near the electric meter.

Not in your RV. Ground and neutral must remain isolated.

Is the "metered panel" the connection point from the utility or is it a sub panel and the meter belongs to the park.

this is the metered panel.

its wired neutral and ground to same buss bar where the motorhome plugs into.

The easy way to check your system.

After removing the cover, look where the electricians put the grounds and white wires. If this is the 'meter' panel, then the grounds and white wires will be attached to the same bussbars.

If this is a subpanel, then the white bussbar will be on one side, the ground in another location. You will have several wires going to the panel, 2-3 to the center bussbars and the circuit breakers going out of the panel (or a main circuit breaker) and the white wire to the white bussbar, the ground wire to the grounding bussbar.

Fred.

wnjj wrote:
Panels that are "downstream" of other panels should have separate ground and neutral. Otherwise if the neutral were to break, the ground would be carrying current which it's not supposed to do.

In other words, neutral and ground are bonded in the main panel and seprerate in all subpanels.

Panels that are "downstream" of other panels should have separate ground and neutral. Otherwise if the neutral were to break, the ground would be carrying current which it's not supposed to do.

Are you talking the electrical service panel?
That is the only place that the ground and neutral are tied together.