DIY 50 amp to 20 amp pigtail
I want to plug my tractors block heater into our 50 amp RV service for the upcoming winter months… Our panel has 1 - 50 amp and 2 - 20 amp breakers… both 20 services are taken and currently used ye...
Forum Discussion
KnowNuthin wrote:
My original idea is officially axed... somewhere in the back of my brain having 50a running through an extension cord didn't seem like a good idea,
Mitch's idea works too... I already have the 50a - 30a dogbone...
Remember, you're not automatically pulling 50A through your ext cord. You only have the ability to, in the scenario you mentioned. If the "load" only takes say 2 amps, or whatever, that is what the cord "experiences." The danger mentioned is the "potential" to draw the theoretical 50A of current and not blow the breaker, thus heating up and damaging the weakest link in the chain.
There are a few options, not entirely clear without seeing your sub panel, but seems the easiest and safest no brainer is get a 30-20A pigtail and not ever touch the hot side of the box.
