charging system

This week we learnt charging systems, on car testing. for safety before working on a vehicle you have to make sure park brake is applied and vehicle transmission is in park or neutral, check before starting to test the charging              circuit for example warning lights should operate, ignition and all accessories are turned off, carry a visual inspection of connections, alternator mounting and condition of fuse and fusible links. Then we started the test by  doing a no load test on the alternator starting with the OCV which was 12.33 volts, regulator 13.6 which was done by engine running. this was a pass because it was between 13.5 and 14.5 volts, the amps was 8.9 again a pass because it has to be at least 5 amps. we then moved on to a load test on the alternator by using a clamp induction ammeter and a voltmeter. output amps reading was 46 this result is good because it meant the alternator was giving enough amps the battery. we finished off by checking the voltage drop between battery positive post and alternator output while the is running at about 1500 rev's with all accessories except stereo and wipers which gave us a reading of 0.1 vlots and the negative post was 0.0 volts this gave us a total of 0.1 volts this good because it was less than o,2 volts meaning there wasn't a big loss of volts.