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[Solved] Prusa Mini Switch Cable  

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Tae
 Tae
(@tae)
Active Member
Prusa Mini Switch Cable

Hi all,

I am planning to move my switch and USB port on Prusa Mini to the front panel. USB is pretty straight forward as I just buy an extension cable. But when it comes to power switch I am bit more cautios. Does anyone know how much power is there so I can use appropriate cable (i.e. use this wire calculator)? Too thin cable and too high power can even start fire. I would like to very much avoid that. 😀 I saw somewhere schematics for the buddy board, but it is unreadable for me as I don't understand it. 😀

Thanks a lot!

Best Answer by karl-herbert:

Posted by: @tae

Hi all,

I am planning to move my switch and USB port on Prusa Mini to the front panel. USB is pretty straight forward as I just buy an extension cable. But when it comes to power switch I am bit more cautios. Does anyone know how much power is there so I can use appropriate cable (i.e. use this wire calculator)? Too thin cable and too high power can even start fire. I would like to very much avoid that. 😀 I saw somewhere schematics for the buddy board, but it is unreadable for me as I don't understand it. 😀

Thanks a lot!

The Mini's power supply delivers a maximum of 160 watts. That would be a max. current of approx. 6.7 amps at 24V. A 1.5mm2 wire is perfectly adequate.

Posted : 06/04/2021 2:31 pm
Turro75
(@turro75)
Estimable Member
RE: Prusa Mini Switch Cable

I used a 2 x 1.5mm2 (awg 16) cable to extend the power cable to the front panel. No issues so far.

If You want to stay relaxed, use a 2 x 2.5mm2 (awg 14) cable.

This post was modified 7 months ago by Turro75
Posted : 06/04/2021 4:18 pm
Tae liked
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Prusa Mini Switch Cable
Posted by: @tae

Hi all,

I am planning to move my switch and USB port on Prusa Mini to the front panel. USB is pretty straight forward as I just buy an extension cable. But when it comes to power switch I am bit more cautios. Does anyone know how much power is there so I can use appropriate cable (i.e. use this wire calculator)? Too thin cable and too high power can even start fire. I would like to very much avoid that. 😀 I saw somewhere schematics for the buddy board, but it is unreadable for me as I don't understand it. 😀

Thanks a lot!

The Mini's power supply delivers a maximum of 160 watts. That would be a max. current of approx. 6.7 amps at 24V. A 1.5mm2 wire is perfectly adequate.

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 06/04/2021 7:07 pm
Tae liked
Tae
 Tae
(@tae)
Active Member
Topic starter answered:
RE: Prusa Mini Switch Cable

Thank you very much to both of you! 🙂

Posted : 07/04/2021 7:53 am
karl-herbert
(@karl-herbert)
Illustrious Member
RE: Prusa Mini Switch Cable

@tae

At one percent voltage drop, even a wire size of 1mm2 would be sufficient.

Statt zu klagen, dass wir nicht alles haben, was wir wollen, sollten wir lieber dankbar sein, dass wir nicht alles bekommen, was wir verdienen....
Posted : 07/04/2021 9:38 am
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