RV8R
Solar Addict
@skipdup
One of my favourite videos to attempt to help DIYers understand AC “Alternating Current” & DC “Direct Current” & why it is so hard to safely open a DC circuit while under load is this video ,,, you can clearly see the difference in the knife switch about 1 minute into the video when he changes the AC to DC;
This is why you need decent fuse protection @ each battery (positive) terminal in your battery bank.
In that video he is using 220 volts, but even 12vdc batteries can be turned into “Arc Welders” unintentionally. Anyway, that knife switch under load gives you an idea of why your battery fuses are important for AIC in a DC battery.
We flick on & off lights in our houses without thinking about it with 110VAC ,,, because it is AC (@ 60 Hz) ,,, there can be little tiny sparks but 60 Sine waves per second is the reason why that knife switch with AC in the video is benign (120 times a second the voltage is 0 volts);

One of my favourite videos to attempt to help DIYers understand AC “Alternating Current” & DC “Direct Current” & why it is so hard to safely open a DC circuit while under load is this video ,,, you can clearly see the difference in the knife switch about 1 minute into the video when he changes the AC to DC;
This is why you need decent fuse protection @ each battery (positive) terminal in your battery bank.
In that video he is using 220 volts, but even 12vdc batteries can be turned into “Arc Welders” unintentionally. Anyway, that knife switch under load gives you an idea of why your battery fuses are important for AIC in a DC battery.
We flick on & off lights in our houses without thinking about it with 110VAC ,,, because it is AC (@ 60 Hz) ,,, there can be little tiny sparks but 60 Sine waves per second is the reason why that knife switch with AC in the video is benign (120 times a second the voltage is 0 volts);

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