Arlington UV rated, multi-hole connectors are ideal for solar and other outdoor jobs requiring the connection of multiple cables into raceways, fittings, and combiner or junction boxes. The original series 3/4 in, 1 in-and 1-1/4 in sizes are ideal for USE-2 photovoltaic cables. The new multi-hole connectors in the same trade sizes have larger holes, making them perfect for PV1000 cables.