To plan where to route wiring, electricians need to know the direction of the floor joists.

The welding symbol consists of the ____.

For branch circuit wiring in residential construction, ____ wire is normally used.

The watt is the unit of measurement of electrical power.

A sheet material such as ____ is used to cover the joists and headers to make the subfloor.

Butterfly is a common floor joist style used in residential construction.

Wood is the most widely used residential construction material.

Spot welds are specified by their diameter.

Most residential wiring calls for #16 aluminum wiring.

When listing electrical symbols, you should not use lowercase subscript to denote a variation of standard equipment.