Yes as long as you have an externally earthed field in your generator. This video is demonstrating that. However if battery was applied to the field terminal then that would be a dead short to earth. When I polarise a generator I always disconnect the two wires from the generator.
So the other videos that spark the field, usually from the regulator are definitely incorrect? Most new stuff would be alternator systems- your john deer looked new- newish? (Oh, just expanded to the notes- a 1958)
@Mcfreddo. The other videos that spark the field as you put it are CORRECT. I will explain. If the generator is an A circuit it has an externally earthed field. To polarise with all leads connected. Momentarily connect lead between B and D terminals on regulator. A generator with a B circuit has an internally earthed field. To polarise with all leads connected Take the wire off the field terminal on the regulator and Momentarily touch on the battery terminal on the regulator. Internally earthed field is earthed to the case of the generator. Externally earthed field is earthed at the voltage regulator moving contact inside the voltage regulator box. A regulator box must always have a good earth. This can be measured with a VOLT METER. I hope that I haven't confused you, it is a very simple system.
Super great and easy video. Thanks for the help
Thank you for this. I’ve had to do this on my 1957 320.
Same technique for both positive and negative ground systems?
Yes as long as you have an externally earthed field in your generator. This video is demonstrating that. However if battery was applied to the field terminal then that would be a dead short to earth. When I polarise a generator I always disconnect the two wires from the generator.
So the other videos that spark the field, usually from the regulator are definitely incorrect?
Most new stuff would be alternator systems- your john deer looked new- newish?
(Oh, just expanded to the notes- a 1958)
@Mcfreddo. The other videos that spark the field as you put it are CORRECT. I will explain. If the generator is an A circuit it has an externally earthed field. To polarise with all leads connected. Momentarily connect lead between B and D terminals on regulator. A generator with a B circuit has an internally earthed field. To polarise with all leads connected Take the wire off the field terminal on the regulator and Momentarily touch on the battery terminal on the regulator. Internally earthed field is earthed to the case of the generator. Externally earthed field is earthed at the voltage regulator moving contact inside the voltage regulator box. A regulator box must always have a good earth. This can be measured with a VOLT METER. I hope that I haven't confused you, it is a very simple system.
@@ianrobinson9565 No you haven't and thank you for that.
Andrew.