Look at figure 5-28. As you can see, most of these
cables are run through holes in the framing members.
When holes are involved, you must plan ahead for
easiest installation and the least waste. You would find
it to be a little easier to run the cable between the two
duplex receptacle boxes in the figure if you put a carton
of cable near the box on the right and thread it through
the holes to the box on the left. For the circuits that run
from the left duplex receptacle box and the switch box
to the ceiling outlet, the carton of cable should be placed
under the boxes. Then you thread the cable up through
the holes to the ceiling outlet. From these examples,
you can see that you need to look at what is involved
before you start to run the cable for a circuit. After you
have completed the roughing-in phase of a project, your
job comes to a halt for a time. In most cases, you should
not start the finish work until the walls and ceilings are
completed; after which you can splice wires as needed
and install the receptacles, outlets, switches, lighting
fixtures, and covers.
Once you begin the finish work, the first thing you
need to do is to make all ground connections.
Equipment grounding is the grounding of all exposed
noncurrent-carrying metal parts of an electrical system
to the earth. Grounding is done to protect anyone who
might come in contact with these parts from being
shocked and also to protect equipment from damage.
Grounding is accomplished when all noncurrent-
carrying parts are connected to a grounding conductor
(or grounding has been achieved by other means, as
approved by the NEC©), and the grounding conductor
has been connected to earth at the service equipment or
panelboard, as shown in figure 5-29. The equipment
Figure 5-28.Nonmetallic cable installation.