Not sure if his widow ever got rid of it since? The park owner did stand the cost of repairs but his system was never the same and the smell and lots of burned charred areas remained. Most all things electrical in his nice Class A were fried. You can destroy the electrical systems if you apply 240V where 120V should be.ĪMEN a few years back a good friend Al of Florida (now deceased) was at an RV park and plugged his 50 Amp RV into a recently INCORRECTLY re wired power pedestal THINGS SMOKED AND BURNED AND POPPED AND CRACKED INSTANTLY. John T Live in the RV from Las Vegas Bay dry campground Lake Mead Henderson Nevada headed to Death Valley later. If not hopefully the other fine electrical minded gents and electricians or engineers can add to or correct this If an appliance like a dryer or heat pump etc required 240, it would be connected to a TWO POLE 240 VOLT BREAKER connected to L1 & L2 so it gets 240.ĭISCLAIMER Im longggggggggg retired from Power Distribution Engineering and rusty so no warranty but believe this remains true. The RV load is also connected to Neutral so it sees 120 VAC. ![]() A typical 15 or 20 Amp 120 Volt Single Pole Circuit Breaker (feeds 120 VAC RV appliances) is wired to ONLY one buss, L1 orrrrrrrrrrr L2. The Breaker panel has two buss terminals, one wired to L1 other to L2. ![]() YOU ASKED .how do i get 2-50 amp legs from breaker panel without being 220? Typical RV loads are connected to L1 and Neutral which is only 120 VAC or L2 and Neutral which is also 120 NOT 240 When one is 120 + other is 120 - so its 240 L1 to L2 You get 240 L1 to L2 because both are 180 OUT OF PHASE with each other. NOOOO if both are in phase its ZERO VOLTS L1 to L2 ![]() The ONLY way to get 240 would be wire something L1 to L2 !!!!!!!!!! Typically half the RV 120 circuits are fed off L1 and Neutral and the other half L2 and Neutral. 1) A 50 Amp RV has two UnGrounded legs L1 & L2 each of which is 120 VAC with respect to the Grounded Common Conductor Neutral.Ģ) Such an RV Park electrical service if wired as most (but not all) are is referred to in the trade as 120/240 Single Phase Three Wire.ģ) If such is indeed the case and is typically how most homes are served, L1 & L2 are 180 out of phase with each other (when one is 120+ other is 120-) THEREFORE its 240 VAC L1 to L2.Ĥ) Soooooo you see there is 240 VAC in that 50 Amp RV electrical panel if you measure across L1 to L2 BUT ONLY 120 (1/2 that) from EITHER L1 orrrrrrrrrrrrrrrr L2 to the Common Neutralĥ) The way such a service is derived is using a transformer which has a LV Secondary winding which measures 240 VAC end to end L1 to L2 HOWEVER in the center of that LV secondary winding is a center tap which becomes earth grounded and is Neutral so its only ONE HALF (or 120) from the center Neutral out to either end.Ħ) You don't fry RV 120 VAC devices with 240 because they are connected to L1 orrrrrrrr L2 and Neutral which is only 120.
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