How to crimp ethernet cable: RJ45 network cable

How to crimp ethernet cable: RJ45 network cable

The RJ45 cable, also known as an Ethernet cable, is a standard cable which has four twisted pairs of colors. It is easy to crimp a RJ45 cable and make it into a straight cable or cross the cable as required. To make a straight cable, the ends must be crimped in the same way at each end. When making a crossover cable, some wires of certain colors have to be reversed. Learning how to crimp a RJ45 cable and making straight and cross cables prove to be useful as different types of wires of varied le

What you need?

  • A reasonable length FTP cable
  • Two RJ45 tips
  • A clip crimp

How to proceed?

Strip the cable to 2 cm at each end and separate the strands.

They are usually divided into 4 twisted pairs of colors:

Orange / orange-white Green / green-white Blue / white and blue Brown / brown-white

Making a straight cable

To make a straight cable, the tips must be crimped typically the same way at each end by respecting the twisted pair size.

In general, the code used is:

1) orange-white 2) orange 3) green-white 4) Blue 5) blue-white 6) Green 7) brown-white 8) brown

Making a crossover cable

For a crossover cable, swap 1 with 3, and 2 with 6, in the list above. This gives:

1) green-white 2) green 3) orange and white 4) Blue 5) blue-white 6) orange 7) brown-white 8) brown

The standard EIA / TIA 568 (A & B)

Straight cable

1) white-green / white-green 2) green / green 3) white-orange / white-orange 4) Blue / blue 5) white-blue / white-blue 6) Orange / orange 7) white-brown / white-brown 8) brown / brown

For crossover cable 10/100baseT

1) white-green / white-orange 2) Green / orange 3) white-orange / white-green 4) Blue / blue 5) white-blue / white-blue 6) Orange / green 7) white-brown / white-brown 8) brown / brown

To complete crossover cable or cross gigabit

On Gbic 1000BaseT eg

1) white-green / white-orange 2) Green / orange 3) white-orange / white-green 4) Blue / white-brown 5) white-blue / brown 6) Orange / green 7) white-brown / blue 8) Brown / white-blue

Note:

Many Gigabits (10/100/1000 multi speed) are auto MDI / MDIX and automatically adapt to the type of cable connected.

A picture to better understand the coding

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