Southwire™ X-TREME BOX™ power boxes, sometimes called spider boxes or spider box, are a portable power distribution center that allows for temp power to be provided to a job site in a more effective way as it allows for power to be distributed more locally. The 19703R02 is a single phase electrical distribution box that takes a 50 AMP 125/250v, 12, 000 watt input and distributes it to 6 20 AMP receptacles and 1 30 AMP receptacle. There is also a 50 AMP pass through for running portable power distribution boxes in series. It is a great temp power box with premium features like independent GFCI modules on the 20 amp outlets, premium breakers, and all-copper backplane. This X-TREME BOX is a Portable Power Distribution Unit that provides a quick and simple way to provide power in a multitude of situations. On industrial and residential jobsites, this unit effectively reduces labor costs in establishing power panels and GFCI's. Simply power the box with a 50 amp, 125/150 volt power supply cord. The power is then broken down into useable, 20 amp, 125 volt twist-lock outlets for jobsite related equipment. This unit has weather-resistant covers, making it perfect for both indoor and outdoor use. The Extreme Box has six GFCI protected NEMA 5-20R straight blade receptacles and one, NEMA L6-30, 250V, 30A locking outlet. All outlets are circuit breaker protected.