If you find yourself in this situation, the use of jumpers (generic on one end, MC4 on the other) is not the best solution. If you choose this strategy only the leads at your string termination would require replacement.Īlthough rare, some electrical inspectors may take issue with generic connectors intermated with MC4 or H4 connectors of popular MLPE devices (see below). The connectors of choice could then be crimped to the module whips. If you prefer to not purchase additional generic PV connectors some manufacturers will provide warranty addenda allowing for the removal of factory PV connectors. These extra connectors will be used to maintain a UL rated connection on your DC home-run. Your account manager can assist you in identifying and procuring these connectors. If the system employs a standard string inverter the easiest remedy to the connector conundrum is to purchase extra connectors (or pre-wired whips) to match the connectors found on the modules. To maintain a code-compliant UL rated PV connection you have a couple options. Contact your CED Greentech account manager for confirmation. If you see “MC4 compatible” then you are most likely dealing with a generic connector.
PV connectors make and model is commonly listed on module data sheets. Many inspectors have begun to notice this discrepancy which forces contractors to find a solution. Although these connectors are fully inter-matable with their MC4 and Amphenol H4 counterparts, in most cases the union between these connectors is NOT a UL rated connection. Furthermore, some string combiners and inverter DC wiring boxes are now offered in pre-wired configuration with PV connectors already in place. Today many module manufacturers have turned to generic PV connectors. In recent years, this required little forethought as the majority of modules came from the factory with common connectors like Staubli MC4 or Amphenol.
MC4 CONNECTOR CODE
To maintain code compliance it is imperative that PV connectors are UL rated for interminability. In systems using DC optimizers or microinverters, PV connectors are used to connect the module to the module-level device. PV connectors are also used to form the DC home-run to the inverter.
MC4 CONNECTOR SERIES
These connectors are found on the positive and negative module whips and are used to connect modules into series strings. If you're looking to purchase 10 AWG solar panel PV extension cable, click here.As we have discussed in previous articles, there are several types of PV connectors available today. We've included a solar panel wiring diagram below for one of our best selling solar generators which shows you how solar panel connectors are used: Our solar panel connector video also explains the difference between series and parallel solar panel connections with the use of MC4 solar panel branch connectors. We demonstrate how solar panel connectors work and exactly what type of solar panel connectors you need for both your panels and solar generators.
MC4 CONNECTOR HOW TO
Wondering how solar panel connectors work? This video shows you how to use solar panel connectors and MC4 cables to connect solar panels together and to solar generators. Solar Panel Connectors: How to use solar panel connectors and MC4 solar panel extension cables Open Mon-Thurs: 10am-6pm & Friday's 11-5pm Eastern
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