I’ve used Anderson PowerPoles in mixed voltage environments successfully. A visual indication can be obtained by using other colors for the connector shell; e.g., red for +13 Vdc and blue for +25 Vdc…
One can also re-orient one of the connectors in each pair by 90º or 180º to create a physical incompatibility. This takes some care as the cable ends are no longer interchangeable, but it does provide protection against connecting to the wrong voltage. — Eric K3NA > On 2015 Oct 13, at 16:52 , Florian Teply <use...@teply.info> wrote: > > Am Tue, 13 Oct 2015 18:54:58 +0000 > schrieb "Poul-Henning Kamp" <p...@phk.freebsd.dk>: > > […snip…] > Umm, around here, at least for ham radio operators, it seems many > standardize now on PowerPole connectors for 12V DC. They are pretty > affordable, running at below 2 Euro for a single pair. Sure, it's not > as cheap as an USB connector, but they are designed to handle > significant currents (15, 30, 45 amps which are freely interchangeable, > versions rated for 75 or 120 amps exist also). > > Now of course if you want to mix voltage levels, things might become a > bit more complicated, as most 12V equipment doesn't like to be supplied > with 24 volts, so it might actually not be the brightest idea to use > identical connectors in such circumstances. Don't ask how I know... ;-) > > Of course, short circuit currents are the same as before, so properly > rated fuses and/or circuit breakers are a must, but that would be > recommended for mains powered equipment as well. > > Best regards, > Florian
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