Unlike some other heavy earthmoving equipment, trenchers are many rated by how deep they dig and how fast they move through the hardest soil. Each trencher is listed by horsepower, but HP alone doesn't determine how quickly the trencher works. Higher horsepower can easily translate to a slower model if the digging tip is designed for making a deeper trench than a unit with a less powerful engine. Going higher in horsepower and faster in digging speed than necessary won't affect the results, so aim to rent the strongest and fastest trencher the budget can handle. This results in less time spent on the trench part of the project, reducing rental fees and labor costs alike.
Trenchers are used everywhere that trenches are needed. Some of the most common use cases include: