Voltage doesn’t matter if the rating is higher than you need. Breaker size should be based on the wire to be protected, not the equipment. The purpose of the breaker is to protect the wire after the breaker from overheating and catching fire. It’s not necessarily about protecting the equipment itself (though it can certainly help). Size the breaker based on the gauge wire you are running.
For DC the breakers usually have a lower short circuit current rating than AC rated breakers. It’s harder to break a DC arc than AC. Available fault current is usually a batter specification. Those were the long answers - the short answer is 2x will probably work out just fine. Mark > On Dec 28, 2018, at 10:37 AM, Jason McKemie > <[email protected]> wrote: > > Do you generally size these about double the expected load? > > I see a lot of them rated at higher voltages than I need, will these still be > effective? > -- > AF mailing list > [email protected] > http://af.afmug.com/mailman/listinfo/af_af.afmug.com -- AF mailing list [email protected] http://af.afmug.com/mailman/listinfo/af_af.afmug.com
