Connect with us

Legacy Content

Selecting the correct size electrical cable

In vehicles, the grounded return system is used almost exclusively. In this system, a single wire is run from the battery through switches to the load and the vehicle itself provides the ground or return to the battery. It is important that all electric components have a good ground.

Advertisement

The lighting and wiring experts at Grote Industries remind fleet maintenance managers that wire is used to carry current from the battery through the vehicle to various electrical components: lights, instruments, etc.

Advertisement

In vehicles, the grounded return system is used almost exclusively. In this system, a single wire is run from the battery through switches to the load and the vehicle itself provides the ground or return to the battery.

It is important to note that all electric components have a good ground.

In a combination of vehicles (tractor-trailer) it is important that a good, adequate size ground wire be provided between the two vehicles to carry the current.

Wire has certain resistance to current flow; the smaller the wire, the greater the resistance. Also, as the amount of current (amps) increases, the resistance (ohms) increases.

Advertisement

12-Volt system
For a 12-volt system, there are two factors to be considered:

Voltage drop is the primary consideration in selecting the proper electrical wire size. The length of wire in a circuit is the major contributing factor to voltage drop.

Also keep in mind the current-carrying capacity of the wire. The heavy load in an undersize wire may increase the temperature of the PVC insulation above a safe level of 180º F.

The better informed you are about installation and preventative maintenance, the longer the life of your lighting and safety system products will be, the company added.

Advertisement

For more information, visit www.grote.com/tech/knowhow.

Advertisement

POPULAR POSTS

Sponsored Content

The hidden key to sustainable last-mile operations

East-Penn-Battery-Video-WEB East-Penn-Battery-Video-WEB

Sponsored Content

New East Penn truck battery video takes a closer look at trucking conditions

Sponsored Content

Boosting efficiency and safety on every route

Sponsored Content

Why is fleet image so important?

Connect
Fleet Equipment Magazine