Then you do not understand fundamentals. Yes amps is what you are after on the output side of the controller. On the input you want amps as low as possible. Here is one thing you do not understand. Power is a product of voltage and current. Example all these statements are true.
100 watts = 1 volt x 100 amps
100 watts = 10 volts x 10 amps
100 watts = 100 volts x 1 amp
A MPPT controller is a power converter much like a transformer of 95% and higher efficiency. So if I go in at 100 watts, I come out with 95 to 97 watts. MPPT Output Current = Watts / Battery voltage. So using an extreme example If I input 100 volts @ 1 amp(100 watts) on the out put I have 100 watts / 12 volts = 8.3 amps.
So with MPPT you want to run as high of a voltage as possible. Not only is it more efficient, but saves some serious cash.
So lets say with his 5 panels in series he is required to have a fuse on each panel circuit going to a combiner, A fuse on the output combine, and rather large #8 to 6 AWG wire to handle 42 amps. That adds up to some serious cash.
But if he had say a Midnite Solar Classic 200 he can wire all five panels in series operating at a voltage 150 volts @ 8.35 amps, you eliminate all hardware, combiner and fuses, and use a very inexpensive #14 AWG wire. That is a lot less expensive, more efficient with lower line losses and fewer eggs in the basket to go wrong. On the output of the controller you get 1275 watts / 24 volts = 53 amps.
100 watts = 1 volt x 100 amps
100 watts = 10 volts x 10 amps
100 watts = 100 volts x 1 amp
A MPPT controller is a power converter much like a transformer of 95% and higher efficiency. So if I go in at 100 watts, I come out with 95 to 97 watts. MPPT Output Current = Watts / Battery voltage. So using an extreme example If I input 100 volts @ 1 amp(100 watts) on the out put I have 100 watts / 12 volts = 8.3 amps.
So with MPPT you want to run as high of a voltage as possible. Not only is it more efficient, but saves some serious cash.
So lets say with his 5 panels in series he is required to have a fuse on each panel circuit going to a combiner, A fuse on the output combine, and rather large #8 to 6 AWG wire to handle 42 amps. That adds up to some serious cash.
But if he had say a Midnite Solar Classic 200 he can wire all five panels in series operating at a voltage 150 volts @ 8.35 amps, you eliminate all hardware, combiner and fuses, and use a very inexpensive #14 AWG wire. That is a lot less expensive, more efficient with lower line losses and fewer eggs in the basket to go wrong. On the output of the controller you get 1275 watts / 24 volts = 53 amps.
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