A baby cow is called a calf. Adult male cows are called bulls. Adult female cows are called heifers until they give birth; after they have given birth, they are called cows.
As long as there is a fuel supply of natural gas or propane, a well-maintained backup generator will keep running. If the Generac generator is running on propane, with a 500-gallon tank, it should run 24 hours a day for over a week. How loud are they? Generac generators are very quiet.
Generac home backup generators start at $1899--the most cost-effective on the market. Installation costs vary by system size, installation considerations, and local building codes. We recommend getting a free, in-home assessment from a Generac dealer near you.