How Do Transfer Switches Work?



  • Electrical circuitry, while the basis for many applications and conveniences in our lives, is susceptible to any number of problems. These include power spikes, sags, overages and other anomalies that need to be monitored and dealt with. This is where transfer switches come in.

Operation of a Transfer Switch

  • A transfer switch actively monitors current incoming power. It is set to a predetermined impedance. If any change to it--such as a spike, sag or other power anomaly--occurs, the transfer switch cuts out the circuit and transfers the power to a backup source, typically a generator or battery. When the surge or spike has returned to normal, the transfer switch will return the power supply to the main source.

Automatic and Manual Tranfer Switches

  • Automatic transfer switches do exactly what their name says. They are set up with an internal impedance monitor that routes the power during any change in impedance. A manual switch typically cuts out the circuit and must be manually set to another power source. These switches are used to prevent power interruption and damage by electrical spikes and surges.

Related Searches

Promoted By Zergnet


You May Also Like

  • How Does a 4x4 Transfer Case Work?

    The transfer case is part of the drive line of four-wheel-drive vehicles. Located behind the transmission, the transfer case sends power to...

  • How an Automatic Transfer Switch Works

    A transfer switch refers to an electrical switch device used to divert, or switch power, from its primary electrical power source to...

  • How to Install a Power Transfer Switch

    A generator transfer switch (TS) allows normal alternating circuit (AC) line voltage to connect with the utility power, but when there is...

  • How to Use Manual Transfer Switches

    You will only use your home's manual transfer switch during a power failure. It has three positions: one that connects the commercial...

  • How to Wire a Transfer Switch for an RV

    A recreational vehicle, or RV, will typically have two methods of introducing 120 volt electricity; a shore power cord and a generator....

  • How to Install a Generac Transfer Switch

    Generac is one of the United State's leading producers of generators and other back-up power supplies. In addition to building the power...

  • How Do I Set Up a Generator?

    Generators, whether small household units or large industrial installations, all have the same basic operational requirement: portable power "off the grid" using...

Related Searches

Check It Out

22 DIY Ways to Update Your Home on a Small Budget

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!