What is DLO Cable and its Ampacity?

 A Diesel Locomotive Cable, also known as DLO cable, is a flexible tinned copper with EPR and CPE, ethylene-propylene rubber protection on the conductor's first surface, then with the outer jacket of black chlorinated polyethylene. A diesel locomotive is a railway locomotive that runs on a diesel engine. While a DLO cable takes its name from such a locomotive, it can be used in other machines with diesel engines, such as wind turbines, industrial machines, train wagons, and much more. 


The DLO cable conductor is made up of annealed tinned copper. Tin is used in combination with copper to decrease long term corrosion by enhancing the power supply's overall conductivity and protecting it from rust. Tin is mainly known for its rust protection. It does not corrode easily compared to many other metals, as it effectively keeps the copper conductor underneath the tin layer safe.


These cables' insulation material is of two types: EPDM (Ethylene propylene diene monomer) and EPR (Ethylene Propylene Rubber). From the perspective of performance, the difference between those two insulations is not sufficient. They simply have different types of polymers that are cured by different chemical elements.

These materials are highly flexible and are composed of crosslinked coating elements. They can twist and bend without tearing and wearing as other insulating materials do. It keeps the conductor safe even in case of fire damages.


The layer of the jacket helps mostly in identifying and classifying the wire/cable. Chlorosulphanated polyethylene made up of thermosetting material has a black color jacket covering the conductor, is being sold on Nassau National Cable.


Lugs are nothing but the connectors that are used to connect other cables. The DLO cable is connected to another DLO cable using to boost up the power transmission. The lugs are made up of tinned pure copper composition and consist of flared ends with entrance chambers.

Features of DLO Cable to know about

  • Excellent resistance towards abrasion and external impacts on the cable.
  • Resistance towards oils, chemicals, heat and flame, alkalies, etc.
  • Resistance to weather conditions and various other physical impacts. Weather conditions and external impacts while the machines/locomotives are in motion can reduce the conductivity of cable and electricity flow.


Other Applications of DLO

  • As a general building wire.
  • To supply power to the traction motors in rail vehicles and other diesel-electric locomotives.
  • In onshore and offshore equipment such as for shipboard, oil field, hoisting, cranes, etc.
  • In the wiring of transit car, petrochemical drilling rigs, earthmoving electrical equipment, telecom power supply, power supply in arc welding.

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