Welcome to Inspector Pumphead’s Frequently Asked Questions! I will be answering some of the most common questions we get on a specific topic. Some of this information may also be available elsewhere, but this feature will serve as a convenient one-stop source. Today, I'll be giving a simple explanation of what dual voltage ratings mean for your pump.

The Inspector is in and ready to answer your questions!

Why do some of your pumps listed say 208-230 volts or 208-230/460? 

You may see this listing on any number of our pumps, such as in the Liberty grinder pump ProVore/Omnivore series.

This type of listing shows that the pump's AC motor is rated for dual voltage service, meaning that the pump can be safely run at any of the listed voltages. So if your pump motor plate says 208-230, you know that your pump must run within the range of those two voltages. Note that while the pump will be able to run on either voltage, the amperage draw will differ depending on which voltage you choose. Tri voltage (208-230/460) motors are also available for some pumps.

Single voltage motors must be run at the specified voltage listing, but there is room for a little leeway - about 10% more or less than the listed voltage. This is called the service factor and allows for minor fluctuations in your power level due to various outside factors.

Keep in mind that single phase motors can be either 115 or 230 volt, while three phase motors can be 208, 230, 460 volt or higher. Also note that 208-230 and 208/230 denote the same thing. Different manufacturers use different notation and PumpProducts.com abides by the manufacturer's description.

This is a general overview of what you should look for when purchasing a pump on our site. Motors and electricity can get tricky, so as always, be sure to consult a certified electrician for any of your pressing motor issues or questions.

Pump Products application engineers are standing by to help you find the right pump, as well as to provide price quotes, stocking availability and shipping information. Call our toll free number 1-800-429-0800 to speak to an expert today.