End caps are used to safely cap off the end of a busbar run. The end cap units are factory fitted but they can be easily removed on site to allow for the extension of a busbar system. If the busbar run is bottom fed the end cap would be located at the top end of the busbar. If the system is top fed then the end cap would be located at the bottom. In the case of a centre fed system an end cap must be used at both end of the system, one at the top and one at the bottom.