A punch-down block is a type of electrical connection often used in telephony. It is named because the solid copper wires are "punched down" into short open-ended slots which are a type of insulation-displacement connector. These slots, usually cut crosswise across an insulating plastic bar, contain two sharp metal blades which cut through the wire's insulation as it is punched down. These blades hold the wire in position and make the electrical contact with the wire as well.
What is a punch-down block?
Punch-down blocks provide a convenient method to connect wires without removing the wire’s insulation or installing screws. These are largely used in key phone systems, most notably in PBX breakout boxes and 50-pin RJ-21 connectors. In order to punch the wires down into the slot, a device called the punch-down tool is used.
Can you punch down multiple wires in a punch down block?
It is also possible to punch down multiple wires on top of each other in a single post of a punch-down block, but this practice is discouraged because of reliability concerns. If these multiple wires are of different thicknesses (wire gauges), it is even more likely that the thinner wire will develop contact problems.
Why should I use a punch down tool?
Exposed wires can be dangerous and may cause your connections to short out. To ensure that your wires are secure, use a punch down tool to trim and contain the wires in a basic jack. If you're frequently terminating wires, consider upgrading to a faster, more efficient punch down tool.
Why is it called a punch down connector?
It is named because the solid copper wires are "punched down" into short open-ended slots which are a type of insulation-displacement connector. These slots, usually cut crosswise (not lengthwise) across an insulating plastic bar, contain two sharp metal blades which cut through the wire's insulation as it is punched down.
How do you do a punch down block?
0:5710:09punch down 110 blocks - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnd you know you lay down a cable on the ends on the outer pins you punch it down then you bring inMoreAnd you know you lay down a cable on the ends on the outer pins you punch it down then you bring in another connection to the inner pins and punch it down well one tends use a layered approach.
How does a punch down work?
Most punch down tools are of the impact type, consisting of a handle, an internal spring mechanism, and a removable slotted blade. To use the punch down tool, a wire is pre-positioned into a slotted post on a punch block, and then the punch down tool is pressed down on top of the wire, over the post.
How does a 66 punch block work?
On a 66 block incoming wires are typically punched down on the left side of the block starting from the top. Each wire is punched down to the first pin in a row with one wire per row. The order of the pairs is blue, orange, green and brown with the white wire from the pair being punched down on top.
Are punch down blocks still used?
Punch-down blocks are often used as patch panels, or as breakout boxes for PBX or other similar multi-line telephone systems with 50-pin RJ21 (Amphenol) connectors. They are sometimes used in other audio applications, such as in reconfigurable patch panels.
Is a punch down tool necessary?
Screwdrivers. Use a small, flat-head screwdriver as a common substitute for a punch down tool. When doing so it is vital that you do not break the already thin wire before it makes contact with the desired slot.
What is a 110 block used for?
A 110 block is a type of punch-down block used to terminate runs of on-premises wiring in a structured cabling system.
Why do they call it a 66 block?
The term 66 block reflects its Western Electric model number. The 25-pair standard non-split 66 block contains 50 rows; each row has two (E) or four (M) or six (A) & (B) columns of clips that are electrically bonded.
Are 66 blocks still used?
The 66 block, originally designed and still widely used for voice applications, contains contacts that are easily accessible from the block`s front.
Can you daisy chain phone jacks?
Daisy-chain wiring. This method connects several telephone outlets to one circuit. In this system, the wiring begins at a wire junction connected to your phone service provider's network interface jack and then runs from jack to jack. A daisy-chain wiring system is easily and quickly installed.
What are the two main types of punch-down blocks?
The most common punch blocks are the 66 and 110 blocks. The 66 block has been widely used for splicing 25 pairs of telephone wires together.
In what part of a building would you typically find punch-down blocks?
Punch down blocks are used for when you need to run wires long distances, typically between distribution points ( things like the MDF, or Main Distribution Facility, otherwise known as the main telco room on the primary floor of the building), comms closets, and the like.
What does a 66 block look like?
0:103:02What is a 66 block - YouTubeYouTubeStart of suggested clipEnd of suggested clipMakes like a u-shape. So it goes down comes across comes up and on this other side these wiggle twoMoreMakes like a u-shape. So it goes down comes across comes up and on this other side these wiggle two is a pair they. They're also connected to each other but they do make an unsplit block.
How hard can a human punch PSI?
💡 An untrained person can reach up to 150 psi. Comparatively, the punch pressure of an elite combat athlete can reach around 800 psi. Thus, the impact force result shows us how many newtons of force are in a punch, and the punch pressure expresses how much psi a punch exerts.
How many punches can a human take?
Taking a beating After looking at kicks from several different fighting styles, they found that experts could generate up to 9,000 newtons with them, equal to roughly a ton of force.
How much PSI is the average human punch?
Most individuals' average punching power falls between 60-170 PSI, with outliers on both ends of that range. There is significant debate around how much training can contribute to a person's punching capability vs. their genetic predisposition.
How do you use a punch down tool phone?
2:493:45How to use an IDC Punch Down Tool - Loops - YouTubeYouTubeStart of suggested clipEnd of suggested clipPlace the punch down tool above the terminal with the cutting part facing the end of the core.MorePlace the punch down tool above the terminal with the cutting part facing the end of the core. Wireless. Up with the terminal.
How does a punch down tool work?
Multi-wire punch tools work by terminating several pairs of twisted wires so you can terminate more wire more quickly. Multi-wire punch down tools are also more efficient than standard punch down tools.
What does it mean when you punch down a wire?
You should hear a loud click when you punch down. This just means that you've terminated the wire correctly. Inspect the wires. Once you've finished terminating the wires, look at each wire to make sure there is no overhang out the side of the jack.
How to secure wires in a home?
To ensure that your wires are secure, use a punch down tool to trim and contain the wires in a basic jack. If you're frequently terminating wires, consider upgrading to a faster, more efficient punch down tool.
How to keep wires from sticking out of jack?
If you notice wires sticking out the side, take a wire cutter and carefully trim the wire so that it's flush with the jack. Place a dust cap on the jack. Snap the dust caps in place so that the wires are protected. This will keep the connection secure and can prevent strain on the wires.
How to get wires out of a cable?
Gently pull away the wire pairs from the center of the cable so they fan out. Separate the wire pairs by twisting in a counterclockwise motion. Try to straighten the ends as much as you can since this can make them easier to terminate. ...
How to remove dust cap on a jack?
You can easily remove the dust cap if you need to make changes to wiring later. Simply pop off the dust cap using a flat-head screwdriver inserted into the indentation on the side. If you can't set the dust caps back on the jack, your wires may not be seated correctly.
Why do you have to strip back a cable?
Stripping back the cable will help you remove the jacket to expose enough of the cable so you can separate it.
What blade do you use to punch down cross connects?
When you punch down the cross connects you'll need to switch to a non-cutting 66-blade in your punch down tool so you don't trim the wires when you're creating the daisy chain above.
How many wires can you punch down in a split 66 block?
A 50 Pair split 66 block will have 25 rows of pins which allow you to punch down 50 pairs of wires, 25 on each side. With old style 4 pair (green, red, black, yellow) telephone wire you can punch down 12 cables on each side. With newer style Cat5e wire (white-blue, blue, white-orange, orange, white-green, green, white-brown, brown) you can punch down 6 cables per side.
What is a 66 block phone?
It is used to distribute incoming phone lines to all the phone jacks in your home. It may seem a bit confusing but we'll break down the parts so you can learn to wire a 66 block yourself. If you don't have a 110 block you may have a 66 block in your home. Phone companies can charge a monthly inside wire maintenance fee if you want them ...
How to untwist a pair of wires?
Untwist each pair only as much as you need, pass it through a fin then hook it onto a pin from the top down. After you have all the wires from a cable on the pins, punch them down using a punch down tool with a 66 blade.
How many pins are in a split 66 block?
Pins in the center of the block are were wires get connected. On a split 66 block there are 4 pins on each row. The first 2 pins on a row are electronically connected, as are the last 2 pins on a row but the 4 are independent of each other. If you connect a wire to pins 1 and 2 the signal from the wire on pin 1 will also flow to ...
What happens if you connect a wire to pins 1 and 2?
If you connect a wire to pins 1 and 2 the signal from the wire on pin 1 will also flow to the wire on pin 2 but not to pins 3 and 4. If you want the signal from pins 1 & 2 to flow to pins 3 & 4 you would install a metal bridge clip over pins 2 & 3.
What are the fins on a 66 block?
Fins on the sides of the 66 block are meant to keep wires separated from each other. Some of the fins are slightly rounded to help you identify every 10th wire. You can write on the fin with a permanent marker or apply labels to them for identification.
How to block a punch head on?
As the majority of the force of the punch will be coming forward, you stand a better chance moving the blow to the side rather than opposing it directly. Bring your hand up to the inside of the oncoming punch to "cover" it with your own hand. Complete the move by guiding the strike to the outside.
What are the basic punches in boxing?
Learn the basics. The basic boxing punches are: the jab, the cross, the hook and the uppercut. Knowing how each of these is executed is the first step in understanding how you can stop the blow.
What does the stance of your opponent do?
The stance of your opponent will telegraph important information to you, allowing you to respond co-occurringly with the blow as your assailant strikes. When you feel in danger of violence, take note of: Which foot is leading and following, as a punch is usually thrown from the same side as the back foot.
What is a parry in chess?
Know your aim. A parry is a counter blow that is intended to disarm or deflect a strike coming your way. Parrying requires quick reflexes, but when executed well, it can take the fight out of your opponent more quickly than a simple block. A parry can take the form of a jab, hook, or a close quarters strike.
How to get a blow to your stomach?
1. Prepare your torso. A blow to the stomach can be devastating if you're not prepared. In the event that a blow comes too quickly, or you are unprepared for violence, your best course of action may be to tighten your stomach muscles and shift slightly so the blow lands off to the side of your body.
What muscle is the main target in a fight?
An excellent, and debilitating target, is the bicep muscle. Too often in combat, opponents regard the head as the main target, but the limbs are very susceptible to damage, and a strike to the bicep can leave your assailant's arm crippled for the rest of the fight.
What does it mean when your fists are clenched?
Any tensing, especially clenching of the fists, as this will be a good indicator that a blow is soon to come.
What is punch down block?
Punch-down blocks provide a convenient method to connect wires without removing the wire's insulation or installing screws. These are largely used in key phone systems, most notably in PBX breakout boxes and 50-pin RJ-21 connectors. In order to punch the wires down into the slot, a device called the punch-down tool is used.
When was the 66 punch down block invented?
The 66 punch-down block is characterized by its ability to terminate 22 to 26 solid copper wire, and was introduced by the Bell System in the 1960s as a terminating device equipped with an insulation displacement connector feature.
What is 110 block?
Follow Us: While both function as punch-down blocks used in telephony to cross-connect electrical wires, 110 blocks are the modern and upgraded versions of the 66 block.
