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Old 03-04-2019, 09:51 AM   #1
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Multiple 50 amp relays???

Is it safe to use three 50a relay switches together?
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Old 03-04-2019, 11:16 AM   #2
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How much experience do you have in electricity?

What your showing is just one part of what's necessary, you're forgetting the neutral in this scenario. You'll also need 2 50 amp relays for both hot legs of your 50 amp shore plug, while your 30 amp will only have one..

If you buy an automatic transfer switch for an rv, it will be much simpler and provide exactly what your trying to create here.
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Old 03-04-2019, 11:55 AM   #3
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Originally Posted by Booyah45828 View Post
How much experience do you have in electricity?

What your showing is just one part of what's necessary, you're forgetting the neutral in this scenario. You'll also need 2 50 amp relays for both hot legs of your 50 amp shore plug, while your 30 amp will only have one..

If you buy an automatic transfer switch for an rv, it will be much simpler and provide exactly what your trying to create here.
Thanks for the reply. Not much experience at all. I bought a 50a inlet but it only has 1 hot wire terminal. I'll provide a link. As for the rv auto switch, could you provide a link to such device that will relay all three 120v sources? https://www.amazon.com/gp/aw/d/B06X1...mob_b_pd_title
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Old 03-04-2019, 06:20 PM   #4
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A good place to start when learning about RV electrical is with Mike Sokol's series of you tube videos entitled "The no shock zone". There are several Sokol tuitorials covering a wide range of RV applications--they are informative and entertaining though you might have to dig around a bit to find just what you want.

Here is the site for one of them: https://www.youtube.com/playlist?lis...LMeacIcqvxwuNO

I see no reason why you can't build your own transfer switch but with tongue in cheek I'd have to say your present partial diagram looks like a day at Lucas Electric----don't let the smoke out!
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Old 03-04-2019, 06:42 PM   #5
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Sorry about the duplicate post but I couldn't get the edit function to work.
Here is an updated list of Sokol's offerings: https://www.rvtravel.com/author/mike/
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Old 03-04-2019, 07:36 PM   #6
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I see no reason why you can't build your own transfer switch but with tongue in cheek I'd have to say your present partial diagram looks like a day at Lucas Electric----don't let the smoke out!
Jack
You just need a case of this:
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Old 03-04-2019, 10:23 PM   #7
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You just need a case of this:

That's too funny!
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Old 03-05-2019, 11:17 AM   #8
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That's too funny!
If you've ever worked on anything British you'll keep a stock of this around. Lucas once got in the vacuum cleaner business, it was the only product they made that didn't suck.
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