Here is a theoretical question to try to understand how current "flows" on a wire when a PV system is present.
Let's say I have a 200 amp main panel. In the main is a 100A breaker feeding a sub panel outside. Subpanel supplies power to 2 heat pumps and a hot tub.
A PV system is installed with a feeder tap into the sub-panel. PV system has potential to back-feed 50 amps.
Now let's say the Heat pumps and Hot tub is on, drawing 60 amps total. It s a sunny day so the PV system is making 50 amps.
What is the amp flow through the feeder to sub panel? The tendency is to think the PV will reduce the demand on the feeder to sub panel, is this the right way to look at it?
This situation comes up a lot, of course. I'm trying to wrap my head around how the current flows in these cases. Is it actually directional?
thanks
Let's say I have a 200 amp main panel. In the main is a 100A breaker feeding a sub panel outside. Subpanel supplies power to 2 heat pumps and a hot tub.
A PV system is installed with a feeder tap into the sub-panel. PV system has potential to back-feed 50 amps.
Now let's say the Heat pumps and Hot tub is on, drawing 60 amps total. It s a sunny day so the PV system is making 50 amps.
What is the amp flow through the feeder to sub panel? The tendency is to think the PV will reduce the demand on the feeder to sub panel, is this the right way to look at it?
This situation comes up a lot, of course. I'm trying to wrap my head around how the current flows in these cases. Is it actually directional?
thanks