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    AC Heated Bed Wiring Validation

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    Duet Hardware and wiring
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    • copperbricksundefined
      copperbricks
      last edited by

      I'm in the process of adding an AC heated bed to my homebuilt printer and wanted to get a check of how I'm planning to wire it before I go ahead.

      Components:

      • Sensata-Crydom D1225 25A SSR
      • Re-settable 10A AC fuse (https://www.amazon.com/RKURCK-Thermal-Breakers-Overload-Protector/dp/B081PFZWFX/ref=sr_1_2?dchild=1&keywords=AC+10A+breaker&qid=1598206431&sr=8-2)
      • Cantherm 152C 15A Thermal Cutoff
      • Generic Arduino style mechanical relay board
      • Generic 750W AC heated bed
      • Duet 2 Wifi

      IMG_0308.jpeg

      Above is the wiring diagram I'm planning on using, grounding the bed and attaching the TCO to the heated bed using high temp RTV silicone. I'm planning on using the mechanical relay in a normally off state as an extra layer of protection.

      Does anyone see any issues with my wiring or component choices?

      Thanks

      Alexander Mundyundefined 1 Reply Last reply Reply Quote 0
      • Alexander Mundyundefined
        Alexander Mundy @copperbricks
        last edited by

        I include GFCI protection in the form of a GFCI cord cap.

        1 Reply Last reply Reply Quote 0
        • gtj0undefined
          gtj0
          last edited by gtj0

          My only feedback would be to make sure the mechanical relay is rated at 10A or more. Otherwise it looks like a typical install.

          1 Reply Last reply Reply Quote 0
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