FLUKE VOLTAGE TESTER MANUAL
What amperage rating does the circuit breaker indicate? This chart will help you determine the maximum size pump installed if the installer complied with the national electrical code and Franklin AIM Manual recommendations/specifications on tables 5 & 14. Most submersible well pumps are single phase 230 volts and require a 2 pole circuit breaker (2 individual circuit breakers connected together). If you don’t know who installed the well pump and don’t have any past invoices or records, locate the dedicated circuit breaker for the well pump. Get this information and hang on to it! These are vital pieces of info when (not if) you need to replace the pump in the future and it will help you determine how much power the pump needs if you are looking for a generator. If you know the contractor that installed the submersible well pump, give them a call! More than likely they will have a copy of the invoice that will show how many horsepower, what size wire, pipe and how deep the pump is. If you can’t find the label, don’t get frustrated because there are still a few things you can do to find out how big your pump is, or at least get an idea of how large it is.
FLUKE VOLTAGE TESTER GENERATOR
If your submersible well pump does not use a control box & pressure switch and, instead, uses a variable frequency or constant pressure controller the information, check out our more recent blog specifically addressing the generator size for residential pump systems that use VFD controllers. It is advised to shut off the power to the pump before removing any electrical covers and practice appropriate electrical safety measures when working with any electrical devices.
To view inside labeling, you may need a screwdriver to remove the control box cover. This control box will typically have the label on the outside, however some manufactures or pump installers will put detailed information inside. Submersible pumps typically have a control box that the wires from the well connect to. Finding this label on the above ground pump is usually the work of just a few seconds, but what about the submersible pump? It is often located hundreds of feet in the ground! This label has information like how many horsepower or kilowatts the motor is rated for, how many amps the motor is expected to use and the voltage that the pump needs to run properly. Submersible and above ground pumps have a label on them, at least when they are clean and new.
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