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relays

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relaywater pump
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  • CrankyCoderC Offline
    CrankyCoderC Offline
    CrankyCoder
    wrote on last edited by
    #1

    Hey guys,
    Moving forward with some of my projects. I am currently working on building a controller for a small water pump for my yard/garden. It's a 12v transfer pump. Can pull 9.5amp. So I am looking at some various relays for this.

    Any recommendations on some decent relays for that kind of power?

    Thanks!!

    Home Automation Tinkerer
    www.CrankyCoder.net

    Controller: HomeAssistant in Kubernetes
    Gateway: MQTTClientGateway
    MySensors: 2.3

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    • gohanG Offline
      gohanG Offline
      gohan
      Mod
      wrote on last edited by
      #2

      The usual relay boards you find for Arduino are rated 10A, but nothing prevents you from modifying it and add a bigger relay in order to have a safer margin

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      • CrankyCoderC Offline
        CrankyCoderC Offline
        CrankyCoder
        wrote on last edited by
        #3

        I was thinking about it on the way home last night, I have a pack of 5 automotive relays. I think they are rated at like 30-40 amps. That might be perfect for this :)

        Home Automation Tinkerer
        www.CrankyCoder.net

        Controller: HomeAssistant in Kubernetes
        Gateway: MQTTClientGateway
        MySensors: 2.3

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        • CrankyCoderC Offline
          CrankyCoderC Offline
          CrankyCoder
          wrote on last edited by
          #4

          these are the ones I have

          https://smile.amazon.com/gp/product/B017VDI0GY/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

          Home Automation Tinkerer
          www.CrankyCoder.net

          Controller: HomeAssistant in Kubernetes
          Gateway: MQTTClientGateway
          MySensors: 2.3

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          • gohanG Offline
            gohanG Offline
            gohan
            Mod
            wrote on last edited by
            #5

            If you can figure out a way to control them maybe using an optocoupler, it could be an option

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