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General discussion • Re: Feeding single Raspberry Pi 4 with two power cables

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It's not likely to break the Pi, but it might damage your power supply. No two sources are going to provide the exact same voltage. This will lead to the higher voltage supply trying to drive to lower voltage supply. Note that the resistance in each cable is part of what determines the voltage supplied, so even the same source feeding through two different cables can have this problem.
Unclear what the last sentence was supposed to say but as written the clause I have highlighted is not true.
Two cables, even to the same nominal specifications, will have different resistance, even if only very slightly. This is one of cases where theory and practice differ. No two objects are identical, no matter that they may be intended to match.

Statistics: Posted by W. H. Heydt — Thu Jan 18, 2024 10:48 pm



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