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Solar Panel Wiring

Solar Panel Wiring

Proper connection of your solar panels to each other within your solar array and to the other balance of system components is crucial to the overall performance of your solar power system. Without proper wiring, power from your solar array may be unnecessarily lost before it travels to your battery bank or inverter.

The solar panel interconnects and panel output cables listed below make it very easy to make clean, code-compliant and water-tight connections. Please call our knowledgeable team of solar experts at 877-878-4060 if you have any questions!

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Subcategories
Product Name Guage Length Price 
  Multi-Contact MC4 (Solarline 2) Locking Sleeve     Multi-Contact MC4 (Solarline 2) Locking Sleeve   Multi-Contact MC4 Locking Sleeve GENMC4-SLEEVE Multi-Contact MC4 (Solarline 2) Locking Sleeve     $2.77
  Amphenol Helios H4 Connector Female     Amphenol Helios H4 Connector Female   H4 Connector Female PVCH4CONNFEMALE Amphenol Helios H4 Connector Female     $3.42
  Amphenol Helios H4 Connector Male     Amphenol Helios H4 Connector Male   H4 Connector Male PVCH4CONNMALE Amphenol Helios H4 Connector Male     $3.42
  Multi-Contact MC Solarline 1 Neg to Solarline 2 Plus     Multi-Contact MC Solarline 1 Neg to Solarline 2 Plus   Multi-Contact 052-09098 GENMC4PLUS/MC3- Multi-Contact MC Solarline 1 Neg to Solarline 2 Plus     $6.00
  MC2/MC4 Branch Coupler 1 Female to 2 Male Ends     MC2/MC4 Branch Coupler 1 Female to 2 Male Ends   MC2/MC4 BRANCH COUPLER ALR-MC2-F-2M MC2/MC4 Branch Coupler 1 Female to 2 Male Ends     $8.72
  MC2/MC4 Branch Coupler 1 Male to 2 Female Ends     MC2/MC4 Branch Coupler 1 Male to 2 Female Ends   MC2/MC4 BRANCH COUPLER ALR-MC2-M-2F MC2/MC4 Branch Coupler 1 Male to 2 Female Ends     $8.72
  T4 Disconnect Key for MC4/H4/T4 Connectors     T4 Disconnect Key for MC4/H4/T4 Connectors   T4-DT GENT4KEY T4 Disconnect Key for MC4/H4/T4 Connectors     $10.95
  SMK Disconnect Key for SMK Connector Cable     SMK Disconnect Key for SMK Connector Cable   SMK Key GENSMKKEY SMK Disconnect Key for SMK Connector Cable     $11.06
  Multi-Contact 3' MC4 Connector Extension #10 AWG     Multi-Contact 3' MC4 Connector Extension #10 AWG   Multi-Contact MC4-MF-3FT PVCMC4-MF-3FT Multi-Contact 3' MC4 Connector Extension #10 AWG  10 AWG  36 in $15.86
  Multi-Contact 6' MC3 Connector Extension #10 AWG     Multi-Contact 6' MC3 Connector Extension #10 AWG   Multi-Contact MC3-6FT PVCMC-MF-6FT Multi-Contact 6' MC3 Connector Extension #10 AWG  10 AWG  72 in $18.56
  Multi-Contact 6' MC4 Connector Extension #10 AWG     Multi-Contact 6' MC4 Connector Extension #10 AWG   Multi-Contact MC4-6FT PVCMC4-MF-6FT Multi-Contact 6' MC4 Connector Extension #10 AWG  10 AWG  72 in $18.56
  Multi-Contact 8' MC3 Connector Extension #10 AWG     Multi-Contact 8' MC3 Connector Extension #10 AWG   Multi-Contact MC3-8FT PVCMC-MF-8FT Multi-Contact 8' MC3 Connector Extension #10 AWG  10 AWG  96 in $19.72
  H4 to MC4 Array Adapter Set (MF Pair)     H4 to MC4 Array Adapter Set (MF Pair)   H4 to MC4 Adapter Set GENH4MC4ADAPTR H4 to MC4 Array Adapter Set (MF Pair)  10 AWG   $20.52
  SMK to MC4 Array Adapter Set (MF Pair)     SMK to MC4 Array Adapter Set (MF Pair)   SMK to MC4 Adapter Set GENSMKMC4ADAPTR SMK to MC4 Array Adapter Set (MF Pair)  10 AWG   $20.52
  Multi-Contact 8' MC4 Connector Extension #10 AWG 600V     Multi-Contact 8' MC4 Connector Extension #10 AWG 600V   Multi-Contact MC4-8FT PVCMC4-MF-8FT Multi-Contact 8' MC4 Connector Extension #10 AWG 600V  10 AWG  96 in $20.88
  Tyco Electronics 8' TYCO Connector Extension #10 AWG     Tyco Electronics 8' TYCO Connector Extension #10 AWG   Tyco Electronics TYCO-8FT PVC-TYCO-8FT Tyco Electronics 8' TYCO Connector Extension #10 AWG     $23.18
  Multi-Contact MC3 to MC4 Adapter Set     Multi-Contact MC3 to MC4 Adapter Set   Multi-Contact MC3 to MC4 Adapter Set PVCMC3-MC4-KIT Multi-Contact MC3 to MC4 Adapter Set     $25.52
  15' H4 Connector Cable #10 AWG     15' H4 Connector Cable #10 AWG   H4-15FT PVCH4-15FT 15' H4 Connector Cable #10 AWG  10 AWG  180 in $26.68
  Multi-Contact 15' MC3 Connector Extension #10 AWG     Multi-Contact 15' MC3 Connector Extension #10 AWG   Multi-Contact MC3-15FT PVCMC-MF-15FT Multi-Contact 15' MC3 Connector Extension #10 AWG  10 AWG  180 in $26.68
  Multi-Contact 15' MC4 Connector Extension #10 AWG        Multi-Contact 15' MC4 Connector Extension #10 AWG   Multi-Contact MC4-15FT PVCMC4-MF-15FT Multi-Contact 15' MC4 Connector Extension #10 AWG  10 AWG  180 in $26.68
More Info on Solar Panel Wiring

Wiring Your Solar Panels to a Combiner Box

Now that many solar panels come with multi-contact Solarline connectors, wiring modules in series is as simple as connecting the positive lead of one module to the negative lead of the next module and so on. If you plan on wiring the modules in parallel, you may be confused about what to do with the MC connector leads on the modules since you can't connect positive to positive using only the connectors.

If you are going to be wiring your modules in parallel, you have two options. The first is to use MC connector cables, one per module. Measure the distance from the module to the combiner box. If it is 3 feet, you'll need a connector that is double that, like the multi-contact 6 FT MC3 connector extension #10 AWG. Plug the male and female ends of the MC connector in to the corresponding solar module leads. Cut the MC connector cable in half and run the bare ends of the connector to your combiner box. Repeat this process for each solar module. Do not cut the MC connector leads on your solar module! This may void the warranty.

The second option available to you is to use branch cable couplers, one each MC Branch Cable Coupler F-2M and MC Branch Cable Coupler M-2F for each pair of modules being paralleled.

Wiring Your Solar Power System

Do you still have questions? Please feel free to watch our video on wiring your solar power system or give one of our solar experts a call at 877-878-4060.

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