These waterproof Y-connectors make it possible to parallel or series parallel wire PV modules with Multi-Contact “MC4” output cables. Maximum current allowed through connectors is 30 amps.
Image shown above is a one female to two male (F>2M) connector and one male to two female (M>2F) connector. Male or female refers to the inner electrical contact connector orientation, not the outer plastic locking collar.
See below for a series/parallel wiring arrangement using branch connectors.