melting plug

Me Again wrote:

rhagfo wrote:

dustinl wrote:
in the past 14 months i have had to replace the 30A plug that plugs into the rv parks box at least 3 times because 1 of the prongs overheats and melts my plug. need ideas on what might be the cause

OP has not been back in like 8 days, if same park, bad pedestal outlet. Different parks likely too much draw.

How do you draw too much without tripping the parks breaker?

From what I have read over the years...outlets are rated at 80% continuous duty or 24 amps continuous for a 30 amp outlet.

Maybe someone has the NEMA link.

I agree with this in the boat article linked above:

:The max continuous level at which you want to load any shore power circuit is 80%. Keep in mind this is when they are new and with clean tight connections. As the connections age corrosion can set in and this can create high resistance, especially with the highly susceptible 1938 twist-lock standard.

I generally don’t recommend loading a NEMA L5-30 30A circuit to more than 70% of its face value rating, especially in the marine environment. This means approx 21A on a 30A circuit. If you want to push it to 80%, and feel safe about that, the number is 24A. As a marine electrician I do not feel safe about that with the 1938 NEMA L5-30 plug standard."