Thanks ChrisPDX, I see from your first link that 6 AWG is rated for 45A at that length, so says the vendor who looks reliable. And a 50' length would weigh about 30 lbs for the cord.
My thoughts were, if I had to pull up to a house for power, on average what length of cord would I need to reach the dryer. Of course, the answer is always "10 more feet".
I will keep my eye open for a deal on SOOW 6/x cable at lengths thereabouts.
Hey, you seem to be up on these matters... maybe got some electrical engineering in you... can you help with these thoughts:
1. is ground required in the extension cord, would the car charge with ONLY L1 and L2 no neutral no ground? I understand the safety factor having a ground. But does the car ground itself (necessarily) through the charge cable to earth ground while charging is my question? ...could I get away with 6/2 cable (in dry environments)?
2. if ground is an absolute must (mobile charger kit checks for it), then is it really necessary for ground to be 6 AWG, or is there a cable with something much less gauge as ground but keeps the 2 power conductors at 6 AWG to handle the current?
3. I notice that same ebay vendor has SOOW 8/4 cable, weighs less for the same length, and carries less current (28A) per conductor... but ... if conductors were doubled up at the end that would easily carry all the current a NEMA 14-50 is rated for. (But nothing remaining for ground. Hence my first two questions.)
Scott
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I just noticed from that same ebay vendor (very informative postings!) that a SOOW 6/4 at 30 foot length is rated less current per conductor (36A) as compared to the 6/3 at 50 foot length rated at 45A per conductor! These ratings must be assuming all conductors carry power in the cable and is a cap on cumulative heat of whole cable. We know only 2 conductors are carrying current for mobile charging extension. So a 6/3 could probably be "stretched" much longer than 50' and still safely carry what a NEMA 14-50 receptacle puts out.