Contribution margin is a measure of operating leverage: the higher the contribution margin is (the lower variable costs are as a percentage of total costs), the faster the profits increase with sales.
What is a snap switch also known as Snap Disc or snap action thermostat? Snap Disc, or snap switch thermostats are bimetal mechanical thermostats that function via the thermal expansion and contraction of a bimetal disc that âsnapsâ from a convex to a concave shape at a set temperature. When the disc âsnapsâ, it either completes or interrupts a circuit.
PopMech has been talking about generators a lot this year, but a transfer switch is a good alternative to a standby generator, one that will allow you to power up only the most important items. A transfer switch is a compact breaker box that is installed inside the home, right beside the main electrical panel. The switch is wired into the main panel and connected to the most critical circuits, such as the furnace, water heater, refrigerator, range, well pump, and interior lights.