Originally Posted by Paris12Man
Since reading this post, I made it a point to monitor my voltage during a flight this morning. I noticed the voltage to be 13.4/13.5 but it was in the yellow below the green area. I think 13.4/13.5 is good but puzzled why it would be in the yellow range. WHAT should the voltage reading be during cruise with everything turning on??
What is your normal voltage reading and how much are you drawing (i.e. all the electronics turned on) during the flight? It is possible that you are taxing your alternator a bit too much.
I think most regulators in alternators are set to about 14.1-14.5v. If you start drawing more amps than the alternator can easily handle, then the voltage comes down in relation to the draw. I would think mid 13v would be fair to judge it as the upper part of the yellow, since the 14.x would be the green and 12.x volt would be considered red or near red.