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8
Connecting GSP Solar Panels - Series:
With series wiring, where the terminals are connected positive to
negative, the voltage is added together, while the amperage remains the same. For example, two 12-volt, 3-
amp solar panels wired in series would create a 24-volt, 3-amp system.
Solar Panels should be same rating and same type.
To wire two panels in series, you connect the positive terminal of one to the negative terminal of
another. In series wiring voltage is additive while current is constant.
A Bypass diode is recommended to prevent shading. If one panel is shaded, the current produced by
the un-shaded panel can flow through a by-pas diode to avoid the high resistance of the shaded
panel. By-pass diodes will not be of use unless panels are connected in series to produce a higher
voltage.
4-10 Grounding the GSP Solar Panels and Controllers
Installations in Boats:
WARNING:
Only ground the DC system to battery negative (one-point ground). Never ground the DC system
to the boat bonding system or to any metallic part, fixture, or component on the boat.
Installations in
RV’s & Caravans:
Ground the solar panel(s) to the vehicle chassis with black wire. Multiple 12V nominal solar panels may be
wired together in parallel and grounded with one wire. Use red wire for the solar positive connection to the
controller or the battery.
Installations in Homes, Cabins & Other Land Based Systems:
NOTE: Earth grounding is recommended but not required. Grounding helps protect against lightning by
providing a direct path to earth. In areas prone to frequent lightning strikes, external lightning arrestors and/or
other means of protection may be needed.
Installations using a Vehicle Adapter Plug:
Note: This is an aftermarket modification and can be purchased from Radio Shack or any other
electronic dealer.
Vehicle Adapter Plug w/ Banana Jacks
Connect the positive terminal of your solar panel to the negative terminal of a blocking diode, which
keeps charge flowing in only one direction, from the solar panel to the battery. Connect the positive