Auto Transfer Switch

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Introduction: Auto Transfer Switch

When power goes out in my home, this switch connects my

inverter to allow my sump pump to use inverted dc power automatically.

Parts

Relay k10p-11a15-120 (DPDT, 15A, 120VAC) JAMECO # 282247, $10.95

Deep plastic conduit box

Misc wire

Two male plugs

One female plug

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    user

    We have a be nice policy.
    Please be positive and constructive.

    Tips

    1 Questions

    0

    is your sump pump connected to 5 & 6? is there anything on 7 & 8? thanks

    See diagram for other connections

    5&6, sump pump
    3-7, jumper
    4-8, jumper

    0

    thanks what about 1 & 2

    0

    1 & 2?

    9 Comments

    Where does one get the plastic block to plug in the relay ?

    Check with JAMECO, I got as a set

    Thank you! It was really useful to me. Its crazy how some companies sell equipment to do this simple task for 100+ usd...

    Glad you can use, sometime just the simple things in life are the best

    I'm not sure if Home Depot has, I got mine on line (see description in parts list)

    Hey man wondering where you got the relay from? Could I pick it up at home depot?

    Thank you for your comments, there may be a lot of options here but this works for me

    http://www.directindustry.com/prod/heyco/liquid-tight-strain-relief-cable-glands-11746-1103353.html neither the box nor the "connectors" are water resistant. This device doesn't need to be. It should be placed above flood level.

    Nice to see you used proper water-resistant box & connectors. Instructable could use more detail and or a schematic to make it clearer. I've used this many times at remote sites for backup power switching, works great. Even if you don't have a 110vac relay you can just use an ac adaptor to match your relay voltage.