skylos
Columbus, OH
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Artum, 220 volt receptacles are supposed to have four conductors. If you wire 220 volts to a 3 conductor socket... its just wrong.
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bigdogger
Texas
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Older 220 volt 30 amp plugs (30 amp would describe the breaker in the line, in this case a double pole breaker with each hot leg delivering up to 30 amps) were very similar to a 30 amp 120 volt RV plug. The difference in appearance would be the ground recepticle is not the familar half round but either a third blade or an L shape. These recepticles were used for a bunch of 30 amp 220 volt applications. Welders, window air conditioners, dryers, freezers etc. They are being replaced by 4 wire plugs, but there are a lot of them still out there. My guess is your electrician friend incorrectly assumed that was the electrical demand for your RV 220 volt service. A bad assumption that killed a lot of electrical items. Be aware calling something 30 amp service does not immediately mean it is 120 volt, 30 amp service. If you are not at a campground, check the leads.
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NORM WADDELL
PENSACOLA FL 32514
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There is some terminology used here which is incorrect.
ALL electrical power used by R V's is SINGLE phase.
(True, on 220 volt circuits the voltages on the two hot wires are not IN phase).
But, there is NO TWO PHASE power.........anywhere.
Industry uses 3 phase power for large loads.....THREE
WIRES, with the voltage on each wire 120 degrees out of phase
with the voltages on the other wires. There is no 'neutral'
on most 3 phase systems, although there may be a ground wire,
(and a 'Y' (wye) connected 3 phase system CAN have a neutral).
The point is, ALL the power discussed here is SINGLE PHASE.
L NORMAN WADDELL
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CTD
Stockton, CA, USA
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Not all 220 V loads require a neutral thereby only necessitating a ground with the two phase conductors.
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Sean32
Brampton Ontario Canada
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NORM WADDELL wrote:But, there is NO TWO PHASE power.........anywhere.
Each house has 2 phase 110V. Wired across each other gives the 220V required for driers, for example.
NORM WADDELL wrote:There is no 'neutral' on most 3 phase systems, although there may be a ground wire, (and a 'Y' (wye) connected 3 phase system CAN have a neutral).
If memory serves (and its been a while), the center of the "WYE" is the neutral and on triangle'd (delta) 3 phase system, there is no neutral, as it is derived at the 'far end".
Methinks dude at the house wired 1-A, and 1-B 110V, and created a 220V plug-in which explains why everything fried! A 50A surge may not have protected anything as the issue was not current, it was voltage.
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NORM WADDELL
PENSACOLA FL 32514
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Somebody always wants to argue......and be wrong
Quoting from Wikpeida......
Two-phase electrical power was an early 20th century polyphase alternating current electric power distribution system. Two circuits were used, with voltage phases differing by 90 degrees. Usually circuits used four wires, two for each phase.
I said it was a question of terminology........and there
is NO TWO PHASE POWER IN USE ANYWHERE..........
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renoman69
Edmonton Alberta
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My vote goes he wired it hot-hot-ground on a two pole 30amp breaker. OUCH!!!
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bassmanbrad
houston
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Artum Snowbird wrote:I think you need to know what the label is on the original receptacle, and what the adapter was supposed to do.
If he used his receptacle for a welder, then it would put out 220 volt 2 phase 30 amps. If the receptacle also included a neutral, then either hot to neutral would provide the correct power for your rig.
If the adapter was properly wired, it could have had 115 volt 30 amp 1 phase and you would have been just fine. Whose adapter was it, and what was it supposed to do?
But if the receptacle was only 3 pronged, and not four, then there is no way you could get correct power from it for your rig.
The receptacle was a NEMA TT 30-R, the same as what is on RV power pedestals. The plug is a NEMA TT 30 and is on a store bought 50 amp to 30 amp adapter, and I have used it numerous times in parks that do not have 50 amp service, and to run the trailer off of my generator.
I think it is fairly obvious that dummy ran two hot legs to the receptacle and gave me 220 instead of 110.
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HamsHog
Fulltimer/PS Oasis RV Park, CA
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bassmanbrad wrote:Artum Snowbird wrote:I think you need to know what the label is on the original receptacle, and what the adapter was supposed to do.
If he used his receptacle for a welder, then it would put out 220 volt 2 phase 30 amps. If the receptacle also included a neutral, then either hot to neutral would provide the correct power for your rig.
If the adapter was properly wired, it could have had 115 volt 30 amp 1 phase and you would have been just fine. Whose adapter was it, and what was it supposed to do?
But if the receptacle was only 3 pronged, and not four, then there is no way you could get correct power from it for your rig.
The receptacle was a NEMA TT 30-R, the same as what is on RV power pedestals. The plug is a NEMA TT 30 and is on a store bought 50 amp to 30 amp adapter, and I have used it numerous times in parks that do not have 50 amp service, and to run the trailer off of my generator.
I think it is fairly obvious that dummy ran two hot legs to the receptacle and gave me 220 instead of 110.
Exactlly!!! Wired wrong... Sorry for your losses..
Regards, Hamshog
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christopherglenn
a little over an hour from Yosemite
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There are 2, 3 and 4 wire 240 volt outlets. All 120 are 2 or 3 wire.
2 wire 120 is hot+neutral. 3 wire 120 is hot+neutral+ground.
Older 3 wire 240 outlets are hot+hot+ground. Newer ones are hot+hot+neutral+ground. The 4 wire outlets can be converted to 120 by tying off one of the hot wires, and replacing the braker+outlet, reusing the wire.
hot to hot will be 240, hot to either neutral or ground will be 120. you are not allowed to run hot to ground (but it will work).
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