Generator voltage high ?

[JoeCB]

With all the discussions of generator cut -out testing prompted me to take a look at my 31'. I have not been having any problems other that occasionally burning out a stop light bulb or two. So I checked the voltage output , engine at a fast idle and I'm seeing 10 volts. This seems high for a stock 6 volt system. So what's going on here? What should the output voltage be?

Joe B