Aluminum Bus Bar Ampacity Chart

Knowing required ampacity determine possible bus bar dimensions from the table.

Aluminum bus bar ampacity chart.

This article presents a brief overview of ampacity charts for both copper and aluminum bus bar and shows how to interpret the data within. Understanding bus bar ampacity charts. Then check table 1 to verify that size selected has the necessary ampacity. Ampacities and mechanical properties of rectangular copper busbars.

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. However these charts can only tell you so much. Horizontal bar ampacity from industry sources. Ampacities of copper no.

Vertical bar ampacity based on work by house and tuttle. Toward wider use of aluminum for all types of bus installa tion. Bus bar ampacity table ampacities of copper bus bars alloy uns c11000 dimension in. 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.

Get more information on copper bus bar vs aluminum including qualitative differences strength ampacity resistance cost etc and common misconceptions. Afl aluminum bus conductors are manufactured to meet appropriate astm specifications. Then check the ampacity table to verify that size selected has the necessary ampacity. 30 c rise 50 c rise 65 c rise sq.

Assume that required ampacity is 185 amps at 30 c rise. Aluminum bus bar ampacity table aluminum bus bar amperes for 6101 t61 alloy 57 iacs conductivity chart below bar sizes inches 1 bar 2 bars 3 bars 4 bars dc 60 hz ac dc 60 hz ac dc 60 hz ac dc 60 hz ac 1 4 x 1 308 308 607 601 605 887 12031168 1 4 x 1 1 2 430 429 833 817 1235119416371561. 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. 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.

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. Dc resistance at 20 c microhms ft. Knowing required ampacity determine possible bus bar dimensions from this table. Assume that required ampacity is 185 amp at 30 c rise.

Table gives bus bar cross section which will probably be large enough for ampacities within each range. For 60 hz current table gives bus bar cross sections which will probably be large enough for ampacities within each range. And b 317 00 aluminum alloy extruded bar rod pipe and structural shapes for electrical purposes for alloy 6101. Area weight per ft in lb.

Ampacities of copper no. These include b 241 00 aluminum alloy seamless pipe and tube for alloys 6063 and 6061. 110 busbars ampacities in the table below are for bus bars having an emissivity of 0 4.