Technical information

The same calculation must be applied if the data is required for power

conductors of the machine and relative connection power blocks.

4.3 Reduction of the sections down line from the feeder

conductors

Once the feeder conductor has been cleared, it is also possible to define the

branches with a smaller cross-section called like “tap conductors”.

The rules regarding these conducts are only contained in the NEC and the CEC

and are very similar.The tap conductors are divided on the basis of length:

a) taps (cab les) less than 3 m (10 ft) long: all the conditions imposed should be

respected: the capacity of the conductor should always be adjusted to the

load powered (for example if the load is a motor,the derivation should have a

capacity of at least 125% of its FLA).

FEEDER AND BRANCH CIRCUITS

Cond. 1.25 x 22 + 1.25 x 8 + 4 > = 41.5 A