pieces of equipment remain at the same electrical potential, reducing the possibility of a spark forming between them.
This is particularly important because gasoline and other fuels can produce flammable vapors. A small ignition source in the wrong environment can create a dangerous situation, which is why fuel facilities follow strict procedures for handling and transferring petroleum products.
The chain may therefore be best understood as an additional or traditional feature rather than a magical device that makes the truck completely safe. Its exact purpose can also vary depending on
