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Am working on wiring a 1951 239 flathead and according to the schematic that I have, wiring from the generator to the voltage regulator. F goes to F and A goes to A and the third connection goes back to the switch. Now the instructions I have show a wire going from the connection on the back of the generator to ground and it shows a ground icon. My question, with it wired like this how does the charge that the generator makes get to the battery to refresh it and complete the whole recharge cycle? I have shown the schematic to several others and all end up scratching their heads. Doesn't that connection on the back of the generator go directly to the positive, or in my case with a positive ground, to the negative terminal??
Gen output is thru the ARM terminal. Inside the regulator it makes its way to the BAT terminal. I'm confused by "the third connection goes back to the switch". The connections are ARM, FLD, and GRD (to mounting screw on regulator).
Tried to attach a pic of the drawing that I am working off of but will not work. It shows F going to F on the regulator and A going to A and the third connection on the regulator is marked battery on the drawing and it shows a wire going through the breakers and to the switch. Have sent you a regular email with a request for yours to hopefully be able to send the drawing to you.
Where it says "TO BAT" on my drawing, it is really going to the breakers. It connects to a wire shown in yellow on your drawing that is coming from the starter relay terminal that the big battery cable also connects to. Gen output connects to battery Hot on the breakers.
Tried to attach a pic of the drawing that I am working off of but will not work. It shows F going to F on the regulator and A going to A and the third connection on the regulator is marked battery on the drawing and it shows a wire going through the breakers and to the switch. Have sent you a regular email with a request for yours to hopefully be able to send the drawing to you.
The short yellow wire to the ignition switch is basically just a tap. The actual current path goes through the bus tie (metal strip) between the circuit breakers and then through the ammeter loop and back to the battery connection on the starter relay.
Question on that metal strip between the breakers, what size of metal strip do I need to put between the breakers and/or would a heavy wire suffice?
The metal strip has at least the same ampacity of the yellow wire which I believe is AWG 12, and is good for 25 amps. So yes, an AWG 12 jumper wire will work fine.
I know is an old thread but it caught my attention.
id like to make sense out the generator, regulator, charging current paths.
Is the generator wired series or shunt?
Im assuming the armature wire from Gen to the reg connects to the battery through the reg, then returns from the negative of the battery through the frame back to the ground on the Gen ground terminal?
The field wire from Gen to reg is then controlled by the reg, increasing or decreasing voltage to the field in order to adjust battery charging?
i work on Generac home and commercial stand by generators that have voltage regulators, so I’d like to figure this circuit out on these trucks.
The metal strip has at least the same ampacity of the yellow wire which I believe is AWG 12, and is good for 25 amps. So yes, an AWG 12 jumper wire will work fine.
I know is an old thread but it caught my attention.
id like to make sense out the generator, regulator, charging current paths.
Is the generator wired series or shunt?
Im assuming the armature wire from Gen to the reg connects to the battery through the reg, then returns from the negative of the battery through the frame back to the ground on the Gen ground terminal?
The field wire from Gen to reg is then controlled by the reg, increasing or decreasing voltage to the field in order to adjust battery charging?
i work on Generac home and commercial stand by generators that have voltage regulators, so I’d like to figure this circuit out on these trucks.
Here is how your generator could be wired. You might have to pop the cover to verify.
This is exactly how your system is wired ("charge indicator" is often times called an ammeter). Having a shop manual will answer just about all of your questions.
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