Main breaker trips with A/C and Microwave on.->RESOLVED

How hot was the weather and how many other campers were at the park. I have been to parks where I couldn't hardly run my air after it got dark and everybody went indo0ors to shower and cook dinner, watch t.v. ect. the other r.v.s were just drawing too much power from a park whose electrical service was just marginal. I keep a 120 volt meter on my system at all times and have seen it go down to 101-105 volts just above where my circuit protector will kick out and which is way too low to run every thing safely.