The Advantages of Using an Automatic Transfer Switch

When the power goes out in your house, you can usually endure a few hours of darkness, heat or cold until it comes back. But when your business experiences a power outage, it could be tragic, especially if your critical functions depend on a constant power supply. This same scenario is why many entities, including hospitals, data centers, and even commercial retailers, have emergency backup generators. But just because you have a backup generator doesn’t mean you’re prepared for a power outage. To be prepared, you need to make sure your generator is accessed through an automatic transfer switch and not a manual one.

How is an automatic transfer switch different from a manual one?

Manual transfer switches predate automatic switches but are still widely used today. Unlike circuit breakers, manual switches require one to switch from mains power to generator power in the event of a power outage, and then back to mains power when it resumes. In circuit breakers, a special circuit allows this process to be controlled by a computer. In installations that have a single, conveniently located generator and do not require constant power, the difference between manual and automatic switches is negligible. But for businesses that occupy a campus and have more than one generator to service numerous buildings, circuit breakers offer the most convenience.

When you choose automatic switches over manual ones, you have another decision to make: do you need make-before-break switches or break-before-make switches? The former immediately connects a building to generator power while remaining connected to the electrical grid, while the latter waits to access generator power until it reaches a certain frequency. Unsurprisingly, make-before-break models are favored by entities that need energy at all times. But they come with a risk: If utility power suddenly returns while generator power is also being accessed, a power surge could occur. However, because the period in which both sources are accessed is short, the danger is considered minimal.

If you’re considering protecting your business with an emergency generator, understand that generators stand to benefit more than businesses whose critical services require constant power. Generators can also benefit retail stores, gyms, service centers, and any operation where sales depend on keeping an environment powered. Before purchasing a generator, it’s best to consult with an emergency power equipment supplier to determine what type of switch arrangement is best for your business. Power outages can happen at any time. By equipping your business with power generators, you’ll do more than keep the lights on. It will also do business as usual while the competition remains in the dark.