Well pump wire size chart1/3/2024 ![]() ![]() Jacketed cables offer the most cost-efficient solution.Īs drop cable choices are a one-time investment, it’s important that you size and select it based on the optimal criteria. The motor cable has an impact on the drop cable type you select, so if your motor cable is jacketed, for instance, you need to ensure that the drop cable matches it. ![]() That way, you can reduce life cycle costs, and, at the same time, improve the conditions of your submersible motor.įinally, there’s cable configuration – or, the cable layout. Therefore, it is important to evaluate the size of these losses combined with the chosen cable size. All the losses you experience in your submersible pump installation will also be evident in your installation’s operation costs. During the cable-sizing process, you may find that the amperage of your motor cable is at such a low level that it can be used in the air, allowing you to actually use your motor cable as a drop cable in the air, despite the fact that it is intended for submerged operation. Voltage losses also have a significant influence. This demonstrates the first of the four aforementioned factors: selecting your drop cable type based on the pumped media. There are a number of different drop cable types, materials and layouts depending on the application in which the pump is operating.īut how do you decide which type of drop cable type to use? Well, there are four key factors.įirst of all, standard motor cables are suited for raw drinking water, and making them suitable for other liquids is something that needs to be evaluated from case to case. ![]() The drop cable extends from the motor cable, connecting the pump with the power supply. A general rule of thumb is that motor cables must always be submerged in liquid – exceptions occur, however, and we’ll get back to that shortly. Typically, a submersible motor consists of a motor and a motor cable. The motor cable is the cable that is delivered with the pump. But first, we’re going to briefly take you through the different cables.įirst of all, the voltage provided by the cables are based on local legislations, so it’s important to always ensure that the voltage of your cables is consistent with these legislations.Īt Grundfos, there is a distinction between motor cables and drop cables. You will also learn about the Grundfos cable-sizing tool and how it can benefit you in your work. In this module, we will show you how to optimise your cable-sizing process. But it’s also important to size your cables correctly. Sizing and selecting the right pump and motor is crucial in any submersible pump installation. ![]()
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