Aluminum Bus Bar Ampacity Chart

Space between bars is assumed equal bar thickness.

Aluminum bus bar ampacity chart.

Then check table 1 to verify that size selected has the necessary ampacity. Aluminum has less than one third the density of copper and making allowance for conductivity an aluminum bus bar will weigh about half as much as copper for equal con ductance. Current rating of rectangular aluminum bus bar arrangements amperes for 6101 t61 alloy 57 iacs conductivity sizes inches 1 bar 2 bars 3 bars 4 bars. Assume that required ampacity is 185 amp at 30 c rise.

Understanding bus bar ampacity charts. Ampacities of copper no. In mcm thousand circ mils skin effect ratio at 90 c 60 hz ampacity amp skin effect ratio at 90 c 60 hz ampacity amp skin effect. Bus bar ampacity table ampacities of copper bus bars alloy uns c11000 dimension in.

110 busbars ampacities in the table below are for bus bars having an emissivity of 0 4. Afl aluminum bus conductors are manufactured to meet appropriate astm specifications. Area weight per ft in lb. Ampacities of copper no.

Assume that required ampacity is 185 amps at 30 c rise. If you re not sure whether you need copper bus bar or aluminum bus bar just contact us online and we ll get in touch with you shortly to discuss your application requirements. Knowing required ampacity determine possible bus bar dimensions from the table. For 60 hz current table gives bus bar cross sections which will probably be large enough for ampacities within each range.

However these charts can only tell you so much. Toward wider use of aluminum for all types of bus installa tion. Vertical bar ampacity based on work by house and tuttle. Get more information on copper bus bar vs aluminum including qualitative differences strength ampacity resistance cost etc and common misconceptions.

Ampacities and mechanical properties of rectangular copper busbars. 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. 30 c rise 50 c rise 65 c rise sq.

Horizontal bar ampacity from industry sources. And b 317 00 aluminum alloy extruded bar rod pipe and structural shapes for electrical purposes for alloy 6101. For large installations requiring millions of pounds of metal bus system designers have used the. Table gives bus bar cross section which will probably be large enough for ampacities within each range.

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. This article presents a brief overview of ampacity charts for both copper and aluminum bus bar and shows how to interpret the data within. These include b 241 00 aluminum alloy seamless pipe and tube for alloys 6063 and 6061.