Electric for air conditioning
Hi folks, I've never had the need to use my air conditioning in the rig while parked beside my house. Only used the outside receptacle off the porch when I wanted to turn the fridge on before trips. N...
Forum Discussion
Vulcan Rider wrote:kaydeejay wrote:
Most electricians do not know what a 30A RV receptacle is and think it should be wired the same as for a welder!
I don't know about the incidents that you quote but as this goes along farther it gets even more unbelievable.
The 30 Amp receptacle has 3 conductors, right ??
And a 220 receptacle has 4 conductors, right (hot, hot, neutral and ground) ??
If the "electrician" runs two hots (4 wires) to a 3 conductor receptacle.....where does he connect the 4th wire ??? Or which of the remaining two conductors does he connect to the one remaining lug ??
I can see a rank amateur screwing this up but not a real electrician.
Not right. Many 220's have no neutral. If there is no need for 110, there's no need for a neutral. Electric dryer, air compressor, etc.
http://www.how-to-wire-it.com/wire-a-dryer-outlet.html
The issue is the 3-pin dryer 220 and 3-pin RV 110 look similar.
EDIT: There seems to even be confusion across the net on what a 220 3-pin dryer plug has. Some say hot,hot,neutral and others say hot,hot,ground. Regardless, either one would put 220 onto the hot,neutral of the RV plug if an uninformed electrician wired the RV plug like a 3-pin dryer one.
Here's a site with the NEMA chart showing various configurations. http://www.kellyhayes.com/images/tools/NEMA%20straight%20blade%20configuration%20chart.jpg
Note there are 3-pin 220 only like 6-30R and 3-pin 220/110 like 10-30R. One has no neutral. One has no ground. The style with no neutral (6-30R) uses a round pin for ground just like the 110V RV style 30A receptacle. Those are the 2 that can get confused.
