50 amp sore cord question
I want to make my 50 amp shore cord out of 6/4 soow or stw cord. When I look at the amp ratings on these two cords its 45 amps. When I looked at a 50 amp shore cord with moulded plugs at the rv su...
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Kpackpackkelley wrote:Big Katuna wrote:I'm just learning all these amp ratings.
You don't need 4 #6. The 4th green wire can be #10 and they DO make a product like that.
I have amp meters on my RV and you could really get by on an extension cord with 4 #8s. I have rarely seen a 30a draw on the front leg and the second leg just runs the rear AC.
If this is for your primary cord then by all means use the 3-#6, 1-#10 wire.
I understand you would very rarely have even 25 amps a leg but you have the neutral being shared so it would have to be able to carry both 25 amps which would be 50 amps since its 120 volt only from a generator that's what I'm working on . I believe the soow cord is alright on shore power but from a 7 k gen you have 2 legs of 120 volt not 120/240. I'm just trying to figure all these amp ratings for different size and number of conductors plus which voltage it is rated for.
In a 50 amp RV service cable, the neutral will always carry 50 amps or less.
It will never carry more than 50 amps.
The reason is both hot phases are 180 degrees out of phase so the neutral always carries the difference between the 2 phases.
