Before Starting a Cable Pull Make Sure That
What many people dont realize is that the key to a successful pull hinges on the steps you take before you even begin to feed the cable into the puller. Walk forward a few paces so that there is some tension on the cables.
1- Get started by doing a pull evaluation and proof the conduit.
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. Performing a test pull. Whatever systems or wires you choose these general rules and procedures will make the job easier. With the rope between your legs bend over at your hips and knees and lower your torso until its at a 45-degree.
Grab the ends of the rope in each hand with your back facing the weight stack so that the rope is between your legs. The number of wraps on the puller drill capstan what determines the. As it might be expected the COF increases considerably with bends in the conduit and the formula for.
Take a step away from the machine so. So lets touch on some of the most important things that you need to remember when you are getting ready for a wire pull big or small. The main purpose of a pulling grip is to give users a way to hold onto a cable as it is installed or removed from conduit and duct or strung with overhead utility lines according to Ken Hagemeyer director of product management at Greenlee Textron.
Establish the cable route. The pulling tape should have a rating for greater than maximum anticipated pulling tension. This is a fudge factor and a very expensive one when pulling miles of cable but is a cost of doing business and should be considered before giving an estimate or ordering cable.
Before starting a cable pull make sure that. And finally pull the cable. Begin with a rope handle attached to the low pulley of a cable station.
Install the necessary hardware for cable support. Generally any rooms that will have a TV landline phone or computer need one. Before the start of any cable pull all ducts and cable vaults should be carefully inspected for damage or deterioration and to address any safety concerns.
Allow the tension to pull your hips backwards. In general the maximum sidewall load on any raceway run should be. Insure the cable tray or conduit is inspected prior to cable pulling.
Safety concern and precautions are being complied and discuss with the crew. Assuming a quality cable product has been procured and delivered safely to your job site consider the following factors before you start the pull. Find a cable machine and attach the rope attachment make sure that the pulley is at the bottom of the machine.
Shall be ensuring that the proper work permit has been signed by concerned authority and all precaution which shall be mentioned in work permit has been included. The following suggestions though not all-inclusive will give greater assurance of success for pulling cable. Your knees should remain soft with a slight bend.
7 Tips for Pulling Cable. Keeping your spine neutral and chest up tip forwards by pushing your hips behind you. That means if you are pulling this cable over a pulley or capstan it should have a minimum radius of 10 inches 260mm or a diameter of 20.
Ensure that work permit is prepared and secured. First look at the plan of your house and identify the rooms that require a cable hookup. Position the technicians for the cable pull.
With your back facing the machine pull the rope attachment between your legs and hold the rope with your palms facing each other. All communication equipment is in working order. Bend down and grasp one end of the rope in each hand.
Before starting a cable pull make sure that. Do A Pull Evaluation. Installation of Power Cables Wires.
Pulling fiber optic cable is a science in itselfrequiring extra gentle handing at all stagesI recommend testing before unrolling to avoid prior damage disputes. Diameter is easier to understand when choosing pulleys or capstans. Measure your conduit from end to end to know its length.
Allow for Adequate Clearance Between Conduit and Cable. 3- Provide proper lubrication. Step 3 Send Your Hips Back.
Shall be ensured that the work area is ready and safe to start pulling of cable Shall be ensured that scaffoldings are inspected and tags are valid. Its the measure of friction between the cable and the conduit while the cable is being pulled. Tips For Pulling Wire.
After the cable has reached the other end measure the required length for termination to the Equipment or Distribution board. Identify the rooms that need a cable hookup. The preferred method for checking for damage conduit before pulling cable is.
How to do Cable Pull-Through. A formula for estimating pulling tension is T W x L x N x COF where T equals tension in pounds W equals cable weight in poundsfeet L equals length of run in feet and N equals number of cables. Step 1 - Check your conduit.
Identify the environment where the cable pull will be made. The above formula is for a straight pull. After you get through wiring go through the entire home with a video camera filming every square foot of every wall and every ceiling.
The process can be broken into eight basic steps. Prior to cable pulling double check the following. The coefficient can easily vary between 01 and 10 when a pulling compound is used and may exceed 10 if pulled in a dry conduit.
With your knees slightly unlocked focus on keeping your hands connected to your hips. Hold on firmly and evenly with each hand. 500 pounds foot of bend.
Identify the cable type and specifications. Set up the cable reels and cable cart. Plan the path for your wires before starting any work.
Label according to the Tiaeia-606 standard. Where cables are pulled in conduits or cable trays cables should be free from foreign debris cuts or damage. Ensure during cable pulling that cables are properly aligned and no cable twisting will occurs.
For example a cable 05 in 13mm in diameter would have a minimum bend radius under tension of 20 X 05 inches 10 inches 260mm. Ultimately you want to make sure you have a secure and strong grip on the cable he says. Once youre all set up youre ready to pull through.
Use cable lubricant recommended by the manufacturer to help pulling tensions down. Some contractors like to run wires into every room just in case. 2- Clean the entry and exit of the conduit.
Place your feet just outside of shoulder width apart. Stand with your back to the machine the handle of the cable between your legs your arms straight down. What is the total pulling tension when pulling a cable weighing 5 lb per foot through a 500-foot conduit with a coefficient of friction is 035.
Select a weight that is manageable for you. Be sure there is adequate clearance between conduit and cable. If the conduit length is longer than your fish tape and if you can use the existing wire or cable as your pulling string you will almost no other choice can only use this method to strap wire through catheter.
Having easy access to this storing.
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