allcool wrote:
Each leg of a 50amp rv service can supply up 25-30 amps for a combined amp draw of 50a, 120v.
This can be measured on the common neutral leg with an amp probe.
This part is incorrect. Each leg of a 50A service can supply 50A or 100A at 120V total.
For 50A the neutral will carry the difference of the current on the 2 hot legs. To determine the current on 50A you need to measure the current on each hot leg.
If you are plugged into a 20A or 30A plug with adapters to 50A then the neutral will reflect the total current.
Note: The reason it's called 50A service is because the naming standard is to use the highest voltage which is 240V. So it's a 50A 120/240V... service. This isn't a RV thing as this type of service is very common for a home range, etc.