Question

An electrical wiring job requires the following lengths of 14/2 BX cable: seven pieces each 612ft long, four pieces each 3434in. long, and nine pieces each 1938in. long. What is the total length of cable needed?

Answer 1

First, we need to convert all the lengths into the same unit, say feet. The conversion factors are:
1 inch = 1/12 feet

For the first set of 7 pieces of 612ft long cables, the total length is 7 * 612ft = 4284 ft.
For the second set of 4 pieces of 3434in long cables, the total length is 4 * (3434in / 12in/ft) = 1148 ft.
For the third set of 9 pieces of 1938in long cables, the total length is 9 * (1938in / 12in/ft) = 679 ft.

The total length of all cables is 4284ft + 1148ft + 679ft = 6111ft.
So, the total length of the cable needed is 6111 ft.