** Table gives bus bar cross sections which will probably be large enough for ampacities within each range. Knowing required ampacity, determine possible bus bar dimensions from the table. Then check Table 1 to verify that size selected has the necessary ampacity.

Example: Assume that required ampacity is 185 amp at 30 °C rise. Table 3 indicates that 1/16 x 1 in. size would probably be adequate. This is confirmed by Table 1 which lists the ampacity of 1/16 x 1 in. bus bar as 187 amp.