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Certification Manual

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Studs

When running wire

through walls, there are

rules you have to follow for

drilling and notching wood

studs and top plates.

Some rules help ensure

the structural integrity of a

wall or ceiling and others

are aimed at protecting

pipes and wires that could

be damaged by screws,

nails or other fasteners.

Most facilities will

use wood 2x4 type of

framing. Some however

use 2x6s. The building

codes for drilling holes in

2x4 studs are seen in

Figure 7. When drilling

through a 2x4 top plate to

run wire, use a 1” paddle bit. 1” should be plenty of room to run whatever

wires may be needed for the most common runs such as bus wires, home

run wires, etc. When drilling through multiple studs, try and keep your

holes uniform, aligned, and perpendicular to the stud. This will ease the

wire pulling through them (see figure 8a and 8b).

Incorrect Correct

In non-bearing

walls (left) hole diameter can

be up to 60% of the stud width (2” for 2x4s

and 3 ¼” for 2x6s), and

notch depth can be up

to 40% (1 ¼” for 2x4s and 2 1/8” for 2x6s). In

a load-

bearing wall (right) holes can't exceed

40% (1 ¼” for 2x4s and 2 1/8” for 2x6s) and

notches can't exceed 25% (7/8” for 2x4s and

1 3/8” for 2x6s).

Figure 7: Rules for drilling

Figure 8

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WaveWare Apollo T-2000 Información técnica Pagina 22