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BS there is nothing to keep you from running the engine while you fill up. Ever been to a truck stop or drive a diesel vehicle? Common practice to leave the engine running while filling up with fuel.Exact same thing going on here. The pump can supply more gas then the engine demands so the EXCESS flow fills the tank.
No if you open a circuit, turn the switch off, no current flows.
Let's try this something you might understand, or at least understand what it is, not necessarily how it works, Money. You open a bank account and deposit $100. You make $50 per day and is deposited into your bank account. However no one ever told or taught you that you have to live below your means and you think you are entitled to more so it cost you your $100 per day to live. Care to guess what is going to happen in a few days? That is right, you get educated on bankruptcy and loose your home and blame it on Trump and vote for Bernie Sanders. .
In reality is as Mike touched upon. The battery is a simple buffer or gas tank and the panels are the pump. Three possibilities exist under noon full sun.
1. Batteries are fully charged, and no load demands power. No current flows anywhere because there is no place for it to go. That is Ohm's Law Current = Voltage / Resistance. A load has resistance and if the load is Open Circuit resistance is infinite and simple math says X / Infinity = 0
2. No load, but batteries are discharged. All power the panels can generate goes to the batteries as they are the only load.
3. Load is demanded and batteries are unknown state of charge. Panels are producing power. The load receives whatever power is demanded. If the power demanded by the load is less than what the panels can generate, the excess power goes to the batteries to charge them if needed to charge the batteries. If the power from the panels is less than the load is demanding, the batteries make up for the shortage and are discharging.
No if you open a circuit, turn the switch off, no current flows.
Let's try this something you might understand, or at least understand what it is, not necessarily how it works, Money. You open a bank account and deposit $100. You make $50 per day and is deposited into your bank account. However no one ever told or taught you that you have to live below your means and you think you are entitled to more so it cost you your $100 per day to live. Care to guess what is going to happen in a few days? That is right, you get educated on bankruptcy and loose your home and blame it on Trump and vote for Bernie Sanders. .
In reality is as Mike touched upon. The battery is a simple buffer or gas tank and the panels are the pump. Three possibilities exist under noon full sun.
1. Batteries are fully charged, and no load demands power. No current flows anywhere because there is no place for it to go. That is Ohm's Law Current = Voltage / Resistance. A load has resistance and if the load is Open Circuit resistance is infinite and simple math says X / Infinity = 0
2. No load, but batteries are discharged. All power the panels can generate goes to the batteries as they are the only load.
3. Load is demanded and batteries are unknown state of charge. Panels are producing power. The load receives whatever power is demanded. If the power demanded by the load is less than what the panels can generate, the excess power goes to the batteries to charge them if needed to charge the batteries. If the power from the panels is less than the load is demanding, the batteries make up for the shortage and are discharging.
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