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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  Gauge Length Price
  Multi-Contact MC4 Male Cable Coupler for AWG#10-12 USE-2 Wire - 10PACK     Multi-Contact MC4 Male Cable Coupler for AWG#10-12 USE-2 Wire - 10PACK   Multi-Contact MC4 Male Coupler USE2 PVCMC4MALUS10PK Multi-Contact MC4 Male Cable Coupler for AWG#10-12 USE-2 Wire - 10PACK     $29.95
  SMK Disconnect Key for SMK Connector Cable     SMK Disconnect Key for SMK Connector Cable   SMK Key GENSMKKEY SMK Disconnect Key for SMK Connector Cable     $3.50
  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   $15.45
  T4 100' Connector Extension Cable #10 AWG     T4 100' Connector Extension Cable #10 AWG   T4 T4-100FT PVCT4-MF-100FT T4 100' Connector Extension Cable #10 AWG  10 AWG  1200 in $75.00
  T4 15' Connector Extension Cable #10 AWG     T4 15' Connector Extension Cable #10 AWG   T4 T4-15FT PVCT4-MF-15FT T4 15' Connector Extension Cable #10 AWG  10 AWG  180 in $26.68
  T4 50' Connector Extension Cable #10 AWG     T4 50' Connector Extension Cable #10 AWG   T4 T4-50FT PVCT4-MF-50FT T4 50' Connector Extension Cable #10 AWG  10 AWG  600 in $54.72
  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
  T4 Female Cable Coupler for AWG#10-12 PV Wire - 10PACK     T4 Female Cable Coupler for AWG#10-12 PV Wire - 10PACK   T4 T4 Female Coupler PV PVCT4FEMPV10PK T4 Female Cable Coupler for AWG#10-12 PV Wire - 10PACK     $28.50
  T4 Male Cable Coupler for AWG#10-12 PV Wire - 10PACK     T4 Male Cable Coupler for AWG#10-12 PV Wire - 10PACK   T4 T4 Male Coupler PV PVCT4MALPV10PK T4 Male Cable Coupler for AWG#10-12 PV Wire - 10PACK     $28.50
  T4 to MC4 Array Adapter Set (MF Pair)     T4 to MC4 Array Adapter Set (MF Pair)   T4 to MC4 Adapter Set GENT4MC4ADAPTR T4 to MC4 Array Adapter Set (MF Pair)  10 AWG   $15.45
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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