I-Line™ Busway offers a complete line of compatible, sandwich-type feeder and plug-in busway lengths and fittings. I-Line plug-in busway has options from 225A to 600A with aluminum or copper conductors. These busways are constructed in three-pole and four-pole neutral configurations for system voltages of 600 volts and are rated to allow 100% of the current to flow. This end cap is rated 1600A, that is ideal for 3 phase, 4 wire commercial or industrial applications. As an accessory, it is designed to cap off the end of a busway run. This end cap can be used with copper busways. This end cap meets the UL 857 standard, the CSA C22.2 No 27 standard and the IEC 61439-6 standard.