Pulley system eases installation of additional cables in cable tray

Bill Ebberts

Enterprise Electric

Problem

You need to pull additional cables in a ceiling cable tray using the existing pull string. This can become a problem, however, when the cables become intertwined with the pull string.

Solution

Install a simple pulley system above the cable tray. Tie the pull string around the pulley wheels, making a continuous pull. Tie the new cable to the string and pull (or push) the string through the pulleys. Once the new cable is in position, release it from the string and place it into the cable tray.

Procedure

1) Install two pulley wheels above the cable tray. Fasten tie wrap to support beams, or drill fastener into ceiling slab to ensure pulley system is anchored securely.

2) Use tie wraps to ensure that both ends of the pulley system are anchored in place.

3) Holding the end of the pull string with one hand, feed the string through the left pulley wheel, pull it tightly around the right wheel and, still keeping it taut, bring the string back to the left wheel to complete the pulley system. Tie the two ends of the string together, completing your continuous pulley system.

4) Connect your new cable to the pull string.

5) Pull (or push) the string, bringing the cable along with the string in either direction.

6) When the cable is in position, release it from the pull string and place it in the cable tray.

7) You can then continue the process for additional cables.

This tip was compiled by Dennis Mazaris, registered communications distribution designer (rcdd), a design consultant at PerfectSite, 100 Glenn Drive, Suite A-11, Sterling, VA 20164, tel: (703) 450-8986, fax: (703) 450-9343, e-mail: dmazaris@perfectsite.com.

Click here to enlarge image

Attach additional new cable to the pull string on the pulley and pull the cable into position. Then, when you release the cable from the pull string, it drops into place in the cable tray.

Bill Ebberts, director at Enterprise Electric (Baltimore, MD), submitted this tip in the Installer Tips contest held at Cabling Expo `96 last October in Charlotte, NC.

THE CABLING BLOG


Patrick McLaughlin @cablingmag

Matt
Vincent @CablingTweets

RELATED COMPANIES

SOURIAU

Designs and manufactures high performance harsh environment waterproof interconnect solutions in ...

Panduit Corp

Develops and provides unified physical infrastructure based solutions that help customers connect...

Music Supply Co Inc

Manufactures and sells aluminum push-pull rods, Easy-Kary and EZY-Load wire reel holders, UL-list...

Viking Equipment Finance

Provides established small business owners, middle market and Fortune 1000 companies in the cable...

CI&M VIDEO

SPONSORED CONTENT

EDITORIAL GUIDES

Fiber-Optic Cabling System Installation and Administration

A fiber-optic cabling system requires well-thought-out co...
Sponsored by

WHITE PAPERS

Passive Optical Port Replication in the Data Center

March 16, 2015 What is port replication? Essentially, port replication is “mirroring” the ports of active fiber optic hardware in a passive component (fiber patch...

Solving the Workplace Speech Privacy Crisis

February 10, 2015 When you think of an office building, chances are you picture private offices along the walls and cubicles taking up the open space in the middle. ...

PON and Blown Fiber: The Optimum Solution for Today’s High Gigabit Speed Enterprise Networks

February 2, 2015 As enterprise network managers, challenged like never before, seek to keep up with current and future exponential growth of data and to find the mo...

WEBCASTS

Fiber-Optic Cabling Technologies and Systems

In networks of all types, fiber-optic technology is taking on greater and more-important roles than ever. Whether the environment is a data center, enterprise, campus, or long-distance network, the...

Fiber-Optic Testing Essentials and Latest Technologies

This webcast seminar, presented by Jim Hayes, examines several ways in which fiber testing- both insertion loss and OTDR testing - has evolved. The seminar will begin with a basic tutorial of ...

Enterprise Network Applications and the Cabling Systems Supporting Them

Enterprise network users require access to a wide variety of applications, which can vary from network to network and even from space to space within a network. The joining together of more and mor...
March 25, 2015

SPEED FEED

Speed Feed links you to a year’s worth of Cabling Installation & Maintenance articles in one easy-to-browse list.

CONNECT WITH US

Join our group
Follow Us & Get Updates
Industry Alerts & Reactions
  Add Us For Daily News
Email The Editor

SOCIAL ACTIVITY

© 2014. PennWell Corporation. All Rights Reserved. PRIVACY POLICY | TERMS AND CONDITIONS | SITE MAP