IB-80000A Non Segregated Phase Bus Duct - Powell Industries, Inc.

10 Powered by Safety ®Non Segregated Phase Bus Duct IB-80000AWrap joint with Scotch Super 33+ black G. FINAL INSTALLATION STEPSinsulating tape, 1 inch wide, maintainingtension on the tape while wrapping. WhereSpace heaters are provided as standard equipmentthere are sharp angles, apply additional layersin all outdoor bus ducts rated 5kV or higher, and into obtain equivalent of the insulation on theother bus ducts when requested by the customer. Itflat surfaces. Use two layers, ⅔ lap requiresis recommended that the heaters be energized atthree turns around the bus bar in one widthall times. No switch or thermostat is provided in theof tape. See Figure 8. Finish taping with oneheater circuit unless specified.layer, ½ lap, of Scotch 35 red insulating tape. Heaters providing 250 watts of heat are furnished foreach 10 feet of bus duct. Powell space heater wiringNote: The package of Scotch Super 33+ tape, as part of its ULlisting information, includes the phrase “Suitable for use at is a braid covered copper wire. Space heater wiresnot more than 600V”. This is the UL listed voltage rating for should be connected at shipping breaks after the busa single layer of this tape. When applied as described in thepreceding paragraph, this tape is suitable for use at 5kV orduct is in place and the assembly bolts have been15kV, depending on the number of layers applied.properly tightened. See Figure 4 for a view of properwiring.Figure 8: Wrapping of Bus Bars1/3"1/3"1/3""A"For 15kV: 3 Layers, 2/3 Lap (9 thicknesses of Tape)For 5kV: 2 Layers, 2/3 Lap (6 thicknesses of Tape)View at "A"