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  1. #1
    Student
    Join Date
    Sep 2016
    Location
    Denmark
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    1

    Question 12v 280w heated bed wiring Ramps 1.4/ Arduino 2560

    Hi!

    I just purchased a 12v 280w silicone heated bed.

    My challenge is how to wire it properly so i don't frie my Ramps 1.4/ Arduino 2560.
    I have a 500w 30amp 12v power supply, and according to my calculations it produces enough watts and amps to power the heated bed and all the other electronics, but i am worried that my Ramps 1.4 gets fried if i pull 280w directly trough the ramps board to the heated bed.

    Does anyone know if the Ramps 1.4 can handle that amount of watts or if i need a DC to DC SSR so the power doesn't go trough the ramps board?

  2. #2
    Staff Engineer printbus's Avatar
    Join Date
    May 2014
    Location
    Highlands Ranch, Colorado USA
    Posts
    1,436
    Add printbus on Thingiverse
    The RAMPS heat bed circuit is limited to 11 amps by a resettable polyfuse. So, your 280W bed (23 amps) would require use of an external relay or SSR.

  3. #3
    I agree with yousbo mobile

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