Figure 50. Protecting wires.
b. Figure 50 protecting wire passing through woodwork, floors, and walls. Where wire (except
ground wire) passes through the floor near wall or baseboard and may be exposed to severe mechanical
injury, protect the wire with a pipe or conduit. Where interior wiring passes through the floor away
from wall or baseboard, protect the wiring from mechanical injury with a floor outlet or standpipe.
Passing wire through floors and walls. The approximate size of holes required for passing wire through
floors and walls is given in Table 4.