Calculating Amperage loss

[Spiffdandy]

There are lots of sites with Voltage loss calculators to tell you the given voltage drop per each length and guage of wiring used, however, I find none which will calculate amperage loss? I will be running 200 feet of 10ga wire round trip from my float to my pump. Any help is appreciated.

[foo1bar]

There are lots of sites with Voltage loss calculators to tell you the given voltage drop per each length and guage of wiring used, however, I find none which will calculate amperage loss? I will be running 200 feet of 10ga wire round trip from my float to my pump. Any help is appreciated.

There is no amperage loss, only voltage loss,.

The current going in at one end of a wire is guaranteed to be the same current coming out at the other end - see Kirchoff's laws.

But since most power sources are voltage sources (ex. 120V grid source) and most loads behave mostly resistively a voltage drop from larger wires results in less voltage deilvered to the load which means it uses less power and less current - but the current flowing through the wire is the same at all points through that wire.

[J.P.M.]

Like water going through a pipe, provided there's one inlet, one outlet and no holes, if 10 l goes in one end, 10 l will come out the other. Current is like flow rate, voltage is like pressure drop.

[bcroe]

There are lots of sites with Voltage loss calculators to tell you the given voltage drop per each length and guage of wiring used, however, I find none which will calculate amperage loss? I will be running 200 feet of 10ga wire round trip from my float to my pump. Any help is appreciated.

With thousands of feet of PV solar wire here, I wondered about that too. Approved insulators are very good, but not perfect. One very dark
night I actually set up to measure leakage current. It was MANY orders of magnitude smaller than operational currents, I forget just how
many. Far below operational considerations, I was surprised. Bruce Roe

[inetdog]

With thousands of feet of PV solar wire here, I wondered about that too. Approved insulators are very good, but not perfect. One very dark
night I actually set up to measure leakage current. It was MANY orders of magnitude smaller than operational currents, I forget just how
many. Far below operational considerations, I was surprised. Bruce Roe

You can be pretty sure that leakage will be less than 6ma. (The nominal trip point of a GFCI.)

[bcroe]

The Fronius inverters here use a 1A fuse as a GFI detector; obviously more for protecting equipment than people. System
leakage here would be closer to 6 micro amp.