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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 150' MC3 Connector Extension #10 AWG        Multi-Contact 150' MC3 Connector Extension #10 AWG   Multi-Contact MC3-150FT PVCMC-MF-150FT Multi-Contact 150' MC3 Connector Extension #10 AWG  10 AWG  1800 in $120.84
  Multi-Contact 150' MC4 Connector Extension #10 AWG        Multi-Contact 150' MC4 Connector Extension #10 AWG   Multi-Contact MC4-150FT PVCMC4-MF-150FT Multi-Contact 150' MC4 Connector Extension #10 AWG  10 AWG  1800 in $114.00
  Multi-Contact 120' MC3 Connector Extension #10 AWG        Multi-Contact 120' MC3 Connector Extension #10 AWG   Multi-Contact MC3-120FT PVCMC-MF-120FT Multi-Contact 120' MC3 Connector Extension #10 AWG  10 AWG  1440 in $102.60
  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 120' MC4 Connector Extension #10 AWG        Multi-Contact 120' MC4 Connector Extension #10 AWG   Multi-Contact MC4-120FT PVCMC4-MF-120FT Multi-Contact 120' MC4 Connector Extension #10 AWG  10 AWG  1440 in $96.90
  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
  100' H4 Connector Cable #10 AWG     100' H4 Connector Cable #10 AWG   H4-100FT PVCH4-100FT 100' H4 Connector Cable #10 AWG  10 AWG  1200 in $85.50
  Multi-Contact 100' MC4 Connector Extension #10 AWG        Multi-Contact 100' MC4 Connector Extension #10 AWG   Multi-Contact MC4-100FT PVCMC4-MF-100FT Multi-Contact 100' MC4 Connector Extension #10 AWG  10 AWG  1200 in $85.50
  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
  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 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
  50' H4 Connector Cable #10 AWG     50' H4 Connector Cable #10 AWG   H4-50FT PVCH4-50FT 50' H4 Connector Cable #10 AWG  10 AWG  600 in $54.72
  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
  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
  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
  30' H4 Connector Cable #10 AWG     30' H4 Connector Cable #10 AWG   H4-30FT PVCH4-30FT 30' H4 Connector Cable #10 AWG  10 AWG  360 in $37.62
  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 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     $29.95
  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
  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
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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