Adjust busbar amperage to a smaller value

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Bus bars are not limited to "freestanding" runs of a meter or more or hundreds of amps. While many busbars are custom-shaped and sized to fit the unique needs of the application, there are also smaller busbars that are used directly with a PC board, as shown in Figure 2; these also act as board. This professional busbar sizing calculator handles the full engineering workflow: ampacity per IEC 61439 and DIN 43671, temperature rise analysis per IEC 60890, short-circuit thermal and mechanical withstand per IEEE C37. Copper busbar ampacity is the maximum continuous current a copper busbar can carry without exceeding safe temperature limits. 20 specifies a 65K temperature rise for silver-plated copper busbars (at 40°C ambient) and 30K for non-plated options.

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