Power cord connections melting
I have been having problems with my connections getting hot and melting the plastic plugs. This mostly happens at my 50 amp to 30 amp pigtail going into the camper. I have replace the power cord con...
Forum Discussion
dougrainer wrote:pianotuna wrote:
Thumbs,
For 50 amps the continuous rating is only 40 (on each leg)
For 30 amps the continous rating is 24 amps.
110 is safe--but low, assuming that is voltage under load. Consider getting an autoformer to correct the voltage.
Mine is set to boost voltage to 124. It cuts in at about 115 volts. No more burned plugs.
I have seen you quote this before. I have 43 years as a RV tech, the FIRST almost 24 years when everything was 30 amp and NO 50 amp RV's. I don't know where you get your mis info. RV electrical systems have their OWN national electrical rating and at no time in my 43 years have I ever hear of the 24 amps for 30 and the 40 amps for 50 amp service. Please post the reference for what you state. RV 30 amp is designed up to 30 amps(3600 watts) of service. 50 amp is for 100 amps(12000 watts). NO DERATING at all. Doug
NEC specifies that the maximum non motor loading on circuit breaker is 80% of the CB amp rating. That is where the 30/24 and 50/40 numbers come from. There are some specific exceptions to that rule.
But that doesn’t mean it can’t handle full load. And it doesn’t mean a properly sized circuit will melt down at full load. A 30 amp breaker doesn’t trip at 30 amps, but something slightly in excess of 30.
