This guide explains how to connect REDARC Fixed, Portable Folding, and Solar Blanket ranges in either series or parallel. Series connections increase system voltage while keeping current the same, whereas parallel connections increase output current while maintaining voltage, with Y-connectors and a solar regulator recommended for efficient setups.
REDARC recommends seeking the support of a qualified auto electrician or technician.
Important
For your safety, REDARC recommends installation by a qualified auto electrician or technician. Our trusted REDNetwork is made up of professional auto electrical businesses certified by REDARC to install the complete of REDARC solutions. Find Your Local Installer
This information is applicable to the following products:
- REDARC Fixed Solar Range (SMRP & SPRP)
- REDARC Portable Folding Solar Range (SMFP)
- REDARC Solar Blanket Range (SMFB)
How to set up your solar panel connection
When it comes to solar panel connection, there are a few ways you can connect multiple 4WD solar panels. You can use a parallel or series connection, or a combination of the two.
Important
- Ensure that the Regulator input is rated for the sum of the maximum open circuit voltage of each Panel connected in series.
- Ensure that the system components are rated for the sum of the short circuit currents of each Panel connected in parallel.
- Connecting two Panels that do not have identical ratings may cause damage to the Panels. Panels connected in parallel or series that are subjected to different levels of sunlight may be damaged.
Series
Wiring multiple solar panels in series means you are wiring each panel to the next. This solar panel connection creates a string circuit. The wire that runs from the solar panel's negative terminal is connected to the next panel's positive terminal, and so on. Connecting in series is one of the easiest ways to connect your solar power systems.
Connecting two fixed solar panels in this way (same wattage) will multiply the system voltage by 2 and keep the output current at the same level.
Example series connection:
Parallel
Connecting solar panels in parallel is a slightly different process. All of the positive terminals of the solar panels are connected together, and all of the negative terminals of the solar panels are connected together. It's similar to when you jump-start a car - positive to positive, and negative to negative.
Connecting two portable solar panels, or any other type of solar panel, (same wattage) in parallel will multiply the total power output current by 2 and keep the system voltage at the same level.
Parallel solar panel connections should be made using ‘Y’ connectors available at REDARC. To have a complete and efficient system, it's also wise to incorporate a solar regulator into your solar energy set up.
Example fixed panel parallel connection:
Example wiring fixed panels in parallel with a REDARC BCDC:
*Y-Adaptor Cable not supplied. For other installations, appropriate sized fuses and cables must be used and be determined according to your installation requirements.
**Butt splice crimp connections are recommended for fixed Solar Panel installation.
***If you are using a REDARC BCDC Battery Charger in your system, they have a built-in regulator, DO NOT install a regulator between the Solar Panel and BCDC Battery Charger.