How do I choose a generator transfer switch?

The best way to determine the ideal size of your transfer switch is to match it to your generator’s load. To do this, you should match the largest outlet on your generator. For instance, if your generator’s largest outlet is 30 amps, you should buy a 30-amp transfer switch to get the full power load.

Where do you hook up a transfer switch?

The wires should be drawn through 1 of 3 knockouts located on the underside of the switch. They should join the circuit breaker through a knockout found at the bottom of the box. Lift the transfer switch up to the wall where it is to be installed and label the placement of the mounting screws.

How to select the correct automatic transfer switch Part I?

In general, most transfer switches for used generators are rated to handle Total System Loads. It is always best to check the markings as some Total System Loads are marked “Resistance Only, Tungsten Only etc.” The overall project management hassle is greatly reduced for engineers by choosing a Total System Load from the onset of the project.

Do you need to de-rate a transfer switch?

Locked rotor and motor inrush currents do not need to be considered in sizing a transfer switch that is UL listed for the Total System Load. In most cases, there is no need to de-rate a transfer switch for use in ambient temperatures up to 40° C; this includes switches that are installed in the switchboard or in a separate enclosure.

What kind of load can a transfer switch handle?

The loads listed are Total System Loads, Motor Load, Electric Discharge Lamp Loads, Restrictive Loads, and Incandescent Lamp Loads. Underwriters Laboratory requires that all transfer switches for diesel generators be clearly marked to specify what type of load it is capable of handling.

How can I tell how powerful my transfer switch is?

The surest method of sizing your switch is by matching it to your generator. Finding your generator’s load will tell you how powerful your transfer switch needs to be in order to perform effectively and safely. However having said all of this, the needs of any individual commercial business are somewhat complex, and always different.

How to set up a manual transfer switch?

Connect the generator to the transfer switch Move the generator outside and start it up The UTS will automatically detect power and adjust the circuits as necessary. When power is restored, disconnect your generator and turn it off. Be sure to review your owner’s manual thoroughly before use.

How do you connect a generator to a transfer switch?

Turn off all the circuits in the transfer switch. Connect the generator and transfer switch using a gen cord. Start the generator and let it warm up outside. Flip the main breakers in the transfer switch from “Line” to “Generator” power. One at a time, turn on the circuits you want to power, ensuring the generator doesn’t get overloaded.