Copper Bus Pipe Ampacity

Substation supply company design data current ratings for bare copper tubular bus 2.

Copper bus pipe ampacity.

Ampacities and mechanical properties of rectangular copper busbars. 110 busbars ampacities in the table below are for bus bars having an emissivity of 0 4. Brian teal created date. Knowing required ampacity determine possible bus bar dimensions from this table.

There are a number of considerations that need to be recognized beyond the figures given in the chart. This was observed on samples exposed for 60 days in an industrial environment and it is probably identical to that of bus bars in service. B 241 seamless pipe note. 6 30 2009 11 15 16 pm.

Standard pipe sizes extra heavy pipe sizes current rating in amperes outside inches inside inches outdoor indoor size of tube ips. Skin effect ratio at 90 c. Of tube size of tube ips. Understanding bus bar ampacity charts.

Ampacities of copper no. Area weight per ft in lb. Standard pipe sizes inside inche s weigh t lbs. Ampacity of the bus bar selected must then be verified by checking table 1.

30 c rise 50 c rise 65 c rise sq. Then check the ampacity table to verify that size selected has the necessary ampacity. Current rating in amperes 1. Copper ampacity charts xls author.

Of tube wall thick. However these charts can only tell you so much. Ampacities and mechanical properties of rectangular copper busbars. Ampacities of copper no.

This was observed on samples exposed for 60 days in an industrial environment and it is probably identical to that of bus bars in service. 30 c rise 50 c rise 65 c rise. Ampacities of copper no. Bus bar ampacity table ampacities of copper bus bars alloy uns c11000 dimension in.

110 bus bars ampacities in this table are for bus bars having an emissivity of 0 4. Table gives bus bar cross section which will probably be large enough for ampacities within each range. Dc resistance at 20 c microhms ft. Direct current ampacities may differ from ac ampacities because of ac skin effect.

6061 t6 alloy tubular bus is used where high strength and lower conductivity are required. Assume that required ampacity is 185 amps at 30 c rise. Skin effect ratio at 70 c. This article presents a brief overview of ampacity charts for both copper and aluminum bus bar and shows how to interpret the data within.

For seamless bus tubing over 6 inches see page 618.