Answer: While the terms are often used interchangeably, in the context of electrical infrastructure, a power line generally refers to the conductors used to transmit and distribute high-voltage electricity, typically in an overhead configuration. A cable line often refers to a power line that is insulated and can be laid underground or underwater, and is also frequently used to describe lines for telecommunications, such as for television or internet. For our business, we distinguish between overhead transmission lines and underground cable laying as separate systems with distinct equipment requirements.