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Certification Manual

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to complete their tasks. With this in mind, it is very

important when installing device boxes, to ensure that

they will not be damaged or covered up by the sheet-

rockers or painters. When flush mounting any boxes

(see figure 6) always leave a ½” to 5/8” lip sticking out

past the stud so that the sheet-rock can be cut around

it. When using steel junction boxes, always install them

with the appropriate sized mud rings. Whenever you

are finished installing the box, cover it up with duct tape

or something similar and label it with a sharpie, so that

the contractors know what it is for. If the box is large,

find some scrap cardboard and duct tape it into place.

When working in new construction, it is also important to install some

sort of chase, whenever possible, so that the wires can be protected, or

easily run at a later date. Alliance specifies ½” smurf tubing for low voltage

applications. However, always check with the general contractor first, to

see if they have any preferences, or if it is prohibited by code, in which

situation, conduit or flex must be used.

Mounting Device Boxes

All of our nurse call systems make use of surface mounted metal

cans, otherwise known as device boxes or enclosures. There are two

primary ways to mount a device box and run wire to it. The first is to

penetrate the ceiling and bring all of the wires through a ¾” conduit to the

enclosure. This requires cutting or drilling a 1” hole in the ceiling above the

enclosure in line with its knock-out on the top. The second way is to cut a

hole for an old work box in the sheetrock wall directly behind the enclosure

at the point of its knock-out on the back. This involves drilling a hole in the

top plate above the wall space and running the wires through that way. As

with all other installations, ensure that your enclosures are plumb with their

immediate surroundings. This is particularly important if they are mounted

in plain sight, and not hidden in a mechanical room.

Figure 6: Stud

Mounted Box

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