Wiring Closets

Michael A. Crowley
February 1999

The wiring closets at Mount Holyoke include the following:

While room for all of these system should be considered, there may be a need for additional wiring closets in a building because of the requirement for data that the dataports be no more than 87 meters from the patch panel in the wiring closet. (While 90 meters is standard, we count on a 20 foot patch cable on the client end and a 6 foot cable from patch panel to equipment.)

Most of the components in a wiring closet can be wall mounted on plywood. The mounting plywood should be from two feet off the floor to seven feet off the floor. Data components should be placed in a 19 inch rack rather than wall or shelf mounting.


I believe that a wiring closet 8 by 10 feet would satisfy the following, given only a single data rack and assuming all wall mounted items have at least 5 feet vertical space: The wiring closet should also have room for a 30x24 inch table and chair for a computer for maintenance.


The various wiring should be color coded in the same scheme used in the residence halls. We used category 5 wire for all telephone and data wiring in the residence halls.

Wiring closet examples

This is an view of a wiring closet. Telephone and access control equipment are on the left, video cables are on the far left, a fiber optic panel is straight ahead, and a piece of the data rack is on the right.

Here are the front and back views of a data rack. There is no UPS for this equipment, but a UPS could be placed next to the rack. This rack holds 7x24 dataports. Normally we would recommend limiting a rack to 6x24 dataports and installing a second rack if there are more.

Fiber Panel in a rack for a closet with large amount of fiber.
Video connection on the left; a single fiber panel on the right.
Telephone panels with UPS for the DRUs shown at the very top.

A larger video cable installation.

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