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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 200' MC4 Connector Extension #10 AWG        Multi-Contact 200' MC4 Connector Extension #10 AWG   Multi-Contact MC4-200FT PVCMC4-MF-200FT Multi-Contact 200' MC4 Connector Extension #10 AWG  10 AWG  2400 in $97.00
  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 30' MC3 Connector Extension #10 AWG     Multi-Contact 30' MC3 Connector Extension #10 AWG   Multi-Contact MC3-30FT PVCMC-MF-30FT Multi-Contact 30' MC3 Connector Extension #10 AWG  10 AWG  360 in $39.75
  Multi-Contact 30' MC4 Connector Extension #10 AWG     Multi-Contact 30' MC4 Connector Extension #10 AWG   Multi-Contact MC4-30FT PVCMC4-MF-30FT Multi-Contact 30' MC4 Connector Extension #10 AWG  10 AWG  360 in $34.20
  Multi-Contact 50' MC3 Connector Extension #10 AWG     Multi-Contact 50' MC3 Connector Extension #10 AWG   Multi-Contact MC3-50FT PVCMC-MF-50FT Multi-Contact 50' MC3 Connector Extension #10 AWG  10 AWG  600 in $57.00
  Multi-Contact 50' MC4 Connector Extension #10 AWG     Multi-Contact 50' MC4 Connector Extension #10 AWG   Multi-Contact MC4-50FT PVCMC4-MF-50FT Multi-Contact 50' MC4 Connector Extension #10 AWG  10 AWG  600 in $54.72
  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 75' MC3 Connector Extension #10 AWG        Multi-Contact 75' MC3 Connector Extension #10 AWG   Multi-Contact MC3-75FT PVCMC-MF-75FT Multi-Contact 75' MC3 Connector Extension #10 AWG  10 AWG  900 in $88.16
  Multi-Contact 75' MC4 Connector Extension #10 AWG     Multi-Contact 75' MC4 Connector Extension #10 AWG   Multi-Contact MC4-75FT PVCMC4-MF-75FT Multi-Contact 75' MC4 Connector Extension #10 AWG  10 AWG  900 in $67.26
  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
  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
  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
  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     $15.45
  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
  Multi-Contact MC4 Female Cable Coupler for AWG#10-12 PV Wire - 10PACK     Multi-Contact MC4 Female Cable Coupler for AWG#10-12 PV Wire - 10PACK   Multi-Contact MC4 Female Coupler PV PVCMC4FEMPV10PK Multi-Contact MC4 Female Cable Coupler for AWG#10-12 PV Wire - 10PACK     $28.50
  Multi-Contact MC4 Female Cable Coupler for AWG#10-12 USE-2 Wire- 10PACK     Multi-Contact MC4 Female Cable Coupler for AWG#10-12 USE-2 Wire- 10PACK   Multi-Contact MC4 Female Coupler USE2 PVCMC4FEMUS10PK Multi-Contact MC4 Female Cable Coupler for AWG#10-12 USE-2 Wire- 10PACK     $28.50
  Multi-Contact MC4 Male Cable Coupler for AWG#10-12 PV Wire - 10PACK     Multi-Contact MC4 Male Cable Coupler for AWG#10-12 PV Wire - 10PACK   Multi-Contact MC4 Male Coupler PV PVCMC4MALPV10PK Multi-Contact MC4 Male Cable Coupler for AWG#10-12 PV Wire - 10PACK     $28.50
  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     $28.50
  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
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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