Saturday, October 05, 2013


When I added the solar panels to help charge my 48 volt electric propulsion battery bank I used a Morningstar ProStar Charge Controller- PS-15M-48PG to regulate the solar panels charging. That controller also has a 48 volt 15 amp tap that provides a protected voltage out. It was very convenient to have that tap inside the boats cabin. I used it to power the 48 volt  to 12 volt converter which usually powers my laptop on board:

You can see the tap in the above picture. Even though the output is limited to 15 amps I am using  a75 amp Anderson Power Pole connectors. Why? Because that was what I had available at the time and it fit the input wires to the 48 volt to 12 volt converter. The problem is the red color of the positive wire looks the same as the 12 volt connector color code. Someone could accidentally plug in a 12 volt device if they are not familiar with the controller. This year I finally got around to correcting that. The Anderson color code for their connectors says blue should be used for 48 volts. So I ordered a Anderson Power Products 1300 connector, power pole, 75 amp, housing  that matches the Anderson standard. Nice thing about Anderson Power Poles it is relatively easy to change the connector case:

 So now one can immediately see that the 48 volt controller requires equipment connected to the 48 volt output requires a matching blue connector:

A small change like this can avoid confusion and accidental failures when one is using various voltages on a boat with electric propulsion. You can also see I used a P-Touch label on the controller to also let others know the voltage of the controller.

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