Aluminum Bus Bar Ampacity Chart

Vertical bar ampacity based on work by house and tuttle.

Aluminum bus bar ampacity chart.

Assume that required ampacity is 185 amps at 30 c rise. 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. Space between bars is assumed equal bar thickness. Ampacities of copper no.

For 60 hz current table gives bus bar cross sections which will probably be large enough for ampacities within each range. These include b 241 00 aluminum alloy seamless pipe and tube for alloys 6063 and 6061. 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. 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.

Dc resistance at 20 c microhms ft. 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. Then check the ampacity table to verify that size selected has the necessary ampacity. However these charts can only tell you so much.

Area weight per ft in lb. Afl aluminum bus conductors are manufactured to meet appropriate astm specifications. Bus bar ampacity table ampacities of copper bus bars alloy uns c11000 dimension in. 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. Get more information on copper bus bar vs aluminum including qualitative differences strength ampacity resistance cost etc and common misconceptions. 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. 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. Knowing required ampacity determine possible bus bar dimensions from the table. Horizontal bar ampacity from industry sources. Assume that required ampacity is 185 amp at 30 c rise.

Understanding bus bar ampacity charts. Toward wider use of aluminum for all types of bus installa tion. Ampacities and mechanical properties of rectangular copper busbars. Then check table 1 to verify that size selected has the necessary ampacity.

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 sq. This article presents a brief overview of ampacity charts for both copper and aluminum bus bar and shows how to interpret the data within.