Question

Of those listed, an approved material for conductors installed above ground level in buildings is____________.

1) Copper
2) Aluminum
3) Steel
4) Brass

Answer 1

Copper and aluminum are both approved materials for conductors installed above ground level in buildings, with copper being the preferred choice for its electrical conductivity and flexibility.

Step-by-step explanation:

Of the materials listed for conductors installed above ground level in buildings, both copper and aluminum are approved materials. Copper is a highly preferred electrical conductor due to its excellent conductivity and flexibility. It is widely used for wiring in a range of applications, from domestic electrical systems to complex electronics. Aluminum is also used, particularly in overhead power lines, due to its strength when alloyed with steel and its good conductivity. It is chosen over copper in some applications where weight or cost is a concern.