Positive Ground Vs Negative Ground Solar Panels

Originally the voltages on the wires were positive with respect to earth.

Positive ground vs negative ground solar panels.

Safety v oltage transients and t h e sheer fact that they are required for some loads. This is called negative ground since the negative side of the battery is grounded to earth. Common negative grounding is simply having all negatives linked to ground. There are two distinct advantages to grounding the positive leg of a photovoltaic solar system.

A pwm controller switches on off modulates the ungrounded connection between the solar panel s in a negative ground system and or in a positive ground system and the battery. But before we address each of these it s important to understand the actual definition of ground. They both relate to leakage to ground. Negative ground means that ground is referenced to the negative terminal of the supply voltage.

And all switching fusing control done on the positive side. This occurs primarily because of moisture. If grounding is necessary it must be completed on the positive line. I have a not so typical question on charge controllers.

The electronics required for switching on the positive side is a little more complicated hence more expensive that what s needed for switching on the negative. Common positive systems can be a massive can of worms. I ended up with a positive ground solar charge controller. I have it all setup to charge the house battery and have my loads set up through a fuse block on the load pins of the controller.

There are three main reasons for grounding in an off grid power system. The panel frames may be mounted to chassis ground and the solar controller may be mounted to. Chassis or mechanical and electrical. I am also powering some clearance lights with the truck trailer plug.

There are two types of ground. The slide in camper has a chassis ground common to all the interior and clearance lights. If the controller is to be used on a vehicle which has battery negative on the chassis loads connected to the controller must not have an electrical connection to the vehicle body.