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2. MC4 connector - Wikipedia

   en.wikipedia.org/wiki/MC4_connector

   The MC3 connectors were discontinued in 2016. MC4 name stood for Multi-Contact and its size 4mm PV connectors, introduced by Multi-Contact in 2004. While small solar panels used for battery charging and similar tasks may not require special connectors, larger systems normally connect the panels together in series to form strings. In the past ...

3. Tyco Solarlok - Wikipedia

   en.wikipedia.org/wiki/Tyco_Solarlok

   A front-on view of a typical pair of Tyco Solarlok solar panel connectors. The blue ring on the female connector indicates that it is keyed for negative polarity. The keys are the plastic ridges running along the probe on the right connector. The right connector is the female electrically, although it appears male mechanically.

4. Electrical wiring in North America - Wikipedia

   en.wikipedia.org/wiki/Electrical_wiring_in_North...

   Most wiring is put in non-flexible conduit, usually EMT because of its cost and durability. Rigid may be required for certain areas and additionally, vapor-lock fittings may be required in areas where a fire or explosion hazard is present (such as gas stations, chemical factories, grain silos, etc.) PVC can be used where wire is run underground ...

5. Electrical conduit - Wikipedia

   en.wikipedia.org/wiki/Electrical_conduit

   Galvanized rigid conduit (GRC) is galvanized steel tubing, with a tubing wall that is thick enough to allow it to be threaded. Its common applications are in commercial and industrial construction. [1] It is designed to protect wire and connectors. Intermediate metal conduit (IMC) is a steel tubing heavier than EMT but lighter than RMC. It may ...

6. MC3 connector - Wikipedia

   en.wikipedia.org/wiki/MC3_connector

   PV connectors MC3: Old-style Weatherproof DC connectors. MC3 connectors are a fully discontinued type of single-contact connector commonly used for connecting solar panels . MC3 are named for the original manufacturer Multi-Contact (now part of Stäubli Electrical Connectors ) with a 3 mm contact assembly pin. [ 1 ]

7. DC connector - Wikipedia

   en.wikipedia.org/wiki/DC_connector

   Some common DC power connectors. A DC connector (or DC plug, for one common type) is an electrical connector that supplies direct current (DC) power. Compared to domestic AC power plugs and sockets, DC connectors have many more standard types that are not interchangeable. The dimensions and arrangement of DC connectors can be chosen to prevent ...