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Topic: current capacity of breadboards (Read 3 times) previous topic - next topic

arduinoPi

I have a robot that will be at peak using 7 amps at 12 volts when all systems are on. In the past I usually used breadboard power rails and that worked just fine for smaller robots. I have many devices using 1 amp at 12 volts (water pump, halogen lights, motors, wireless router ) and none of them really exceeding 1 amp each.  how can I manage this kind of current and all of these connections?

PeterH

In that case I'd use suitably rated wires to link the high current components and only use PCB/plugboard/breadboard for the low current parts. The currents and voltages you're dealing with are well within the normal range of automotive wiring.
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be80be

Here maybe you can get a idea here I've use relays on strip board like this
the Red is 120 volts @ 10 amps the Gray is the going to the load

The blue are control lines

I used this to fix a relay that I couldn't find a match for worked fine. I also paint over the copper after I'm done with lacquer black nail polish works great as  insulation.

PaulS

Look closely at the way a breadboard is constructed. Do you really think that the breadboard is designed to carry 1200 watts? I hope your insurance is paid up (or even better, that you don't have any!).

PeterH


Here maybe you can get a idea here I've use relays on strip board like this
the Red is 120 volts @ 10 amps the Gray is the going to the load

The blue are control lines

I used this to fix a relay that I couldn't find a match for worked fine. I also paint over the copper after I'm done with lacquer black nail polish works great as  insulation.



What is the current rating of that track? If you don't know, then what is the cross-section area? Remember to exclude the holes from your calculation. For example, a cable rated at 5A continuous load would typically have a conductor diameter of about 1mm and a cross-section area of about 0.75mm square.
I only provide help via the forum - please do not contact me for private consultancy.

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