In this range, HV junction boxes & electrical enclosures support 11kV, 33kV, 66kV and specialist high-current applications, providing dependable solutions for power transmission, distribution, subsea termination, busbar systems and fibre optic integration. By: Thor, Senior Electrical Engineer at Weisho Electric Co. Thor specializes in R&D and overseas technical support for high-voltage cable junction boxes and other power distribution equipment. 3kV systems up to 240sqmm cables – ATEX certified for Zone 1 and Zone 2 connection of HV cables in hazardous area locations. The OBC is the interface between the car and the public grid. DPJB high voltage 'down hole pump'.