Pots 66 Block
Wiring a 66 block with Category 5 unshielded twisted-pair cable requires a different termination method not typically used with voice-grade cables.
Do they just have 66 of these on the wall, one for each line? Don’t be crazy, they use a 66 block / M-Block / B-Block as a type of punchdown block to terminate the line. Introduced in 1962, the term “66 block” simply reflects its Western Electric model number. Data Surge Protector SPD PBM Indoor POTS 66 Punch Down Block Receptacle Sidactor 270 V Transtector phone line surge protector / arrester (also known as data line surge protection device or SPD as well as transient voltage surge suppressor or TVSS) 1101-115 is in-stock and will ship same business day as purchased from us directly. The top-selling pot racks product is the Elegant Designs 2-Light Brushed Nickel Kitchen Pot Rack Light with Hooks. What are the shipping options for pot racks? All pot racks can be shipped to you at home. Can pot racks be returned? Yes, pot racks can be returned and have a 180-Day return period. What types of pot racks does The Home Depot carry? Houseplants in AutoCAD for free download. Garden plants and flowers, flower pots, flower vases. Older buildings like in Philadelphia will have outdated, but yet working, telephone systems and wiring. Learn about 66 blocks here, http://bridgecable.com/kn.
Robert Y. Faber, Jr.
RCDD
Valerie Smith
EE
The Siemon Co.
Problem
Wiring a 66 block with Category 5 unshielded twisted-pair cable requires a different termination method not typically used with voice-grade cables.
Solution
The following procedure will help ensure that the pair untwist of any twisted pair of conductors will be less than or equal to the 0.5-inch requirement of the Telecommunications Industry Association/Electronic Industries Association 568A standard.
Procedure
1) Mount the 66-style block`s bracket on a properly prepared plywood wall surface or a crossconnect frame. This bracket is useful for cable management and slack storage.
2) Route the cables through the bracket and distribute them evenly to the left and right sides--for example, six 4-pair cables per side.
3) Snap the 66-style connecting block onto the bracket.
4) Remove only as much cable jacket as necessary to terminate the cable conductors. Remember to leave some cable slack behind the block and bracket for future reterminations.
5) Dress the cable pairs through the fanning-strip slots as pairs. Both conductors of each pair should be inserted through the same slot in the fanning strip.
6) Once the conductors are inside the block`s fanning strip, split the two apart and terminate them onto the clips. Be careful not to untwist the cable pairs more than 0.5 inch for Category 5 cables (and no more than 1.0 inch for Category 4 cables).
7) When dressing cable pairs through the fanning strips, alternate slots so that the first pair is pulled through the first slot. Skip the second slot, and pull the second pair through the third slot, and so on. The alternate, empty slots may be used for crossconnect wire.
8) Inspect the cable pairs before terminating.
9) Terminate the conductors using an automatic impact tool. Less expensive nonimpact tools are also available.
10) Labeling may be done on the connecting-block fanning strips, add-on designation strips or cover.
Robert Y. Faber, Jr., RCDD, is a corporate trainer.
66 Block 12 Pair
Valerie Smith, EE, is an electrical engineer at The Siemon Co., Watertown, CT.