The black wire on my plug is burnt up...
So after the winter, I pulled up and moved. I was using the 50A socket with the 50-30 adapter. One of my connections was burnt up and the plastic was melted. The flat prong was black. The ...
Forum Discussion
myredracer wrote:CA Traveler wrote:I understand what you are trying to say. But the 80% rule doesn't apply to plug-in loads. That would be like saying you can't plug a 1500 watt portable heater into a 15 amp receptacle because it draws more than 80% of 15 amps (12.5 amps). DW has a blow dryer that is rated 1875 watts (15.6 amps) and same thing there. (Interestingly, like portable heaters also, only has a 16 gauge cord.) There's other examples where plug-in loads exceeds 80% of a breaker on a circuit being plugged into. You can also have multiple receptacles on a circuit and easily exceed the 80% rule.
Keeping it simple just follow the NEC rule of 80% continuous load. I doubt any RV pedestal or RV panel is rated for 100% continuous load.
In this non simple article there is a lot more information. CLICK
If you can't or shouldn't exceed 24 amps on a 30 amp pedestal, why does the NEC require a 30 amp load allowance per pedestal? Why doesn't a pedestal say you shouldn't exceed 24 amps or an RV have a sticker on the power inlet saying the same? There is simply nothing in art. 551 that requires an RV to be considered as a continuous load.
RV pedestals have to meet UL standard 231 and molded case breakers, UL 489. I think you'll find that you have to look at a UL standard for a piece of equipment as whole, not individual components in it. I haven't looked for a copy of UL 231 and don't know what the details are in it.
A bit of a head scratcher question and no immediate answers pop up on google. IMHO, it boils down to RV and RV park rules in art. 551 and the fact that RVs are plug-in loads, not hardwired like in a building.
