What is the difference between Flat and Round Submersible Cable? The wires inside a round submersible cable are round and individually insulated. Wires inside a flat submersible cable are flat, and each is insulated. The function of round submersible cable is to reduce the total surface area. Flat submersible cable does not untwist itself. Round submersible cable untwist itself. Round submersible cable is typical in industrial applications like pumps. Flat submersible cable is common in the service provision industries, such as the medical industries.
What are the Characteristics of Submersible Cable? Submersible cable The characteristics of submersible cables include: Resilient to abrasion feature minimizes exposure of the cable wires through cutting or wear and tear. Fire retardant feature minimizes chances of occurrence of fire within these cables. High electrical conductivity facilitates the transmission of electricity, which enhances the performance of the electrical equipment.
High-quality insulation material for maximum usage of your submersible cables Temperature resistance enhances its usability in applications with high temperatures. Are there Special Conductors for Submersible Cable? Copper easily bends due to its malleability. This makes it the best alternative to use in submersible cables. Also, copper has a high heat resistance, which eliminates overloading issues.
What are the Benefits of Submersible Cables? The benefits of submersible cables include: They work efficiently in harsh environmental climates such as in wet areas.
They ensure the effective performance of the electrical equipment They have a high-temperature resistance, which allows for their use in high-temperature applications. This increases the applicational area for submersible cable insulated using EPDM. This makes it an excellent insulation material for high voltage electrical equipment. The code contains general requirements regarding the type of cable to be used when installing pumps, but the installer is given some latitude as to the specific type of cable.
The purpose of this article is to help the pump installer decide which type and size of pump cable to use. There are two classifications of insulated multi-conductor cable used in submersible pump applications: submersible pump cable and underground feed cable, known commonly as UF.
Submersible pump cable is used between the wellhead and the pump in submersible applications, and is approved by Underwriters Laboratories UL for underwater duty. It is designed to safely carry electrical loads inside water wells so long as it is sized properly.
UF, on the other hand, is used between the wellhead and the pump control panel or disconnect, and can be buried in the ground, although some local codes require underground high-voltage wiring, even UF, to be run in conduit. Submersible pump cable can be used between the wellhead and the control panel or disconnect so long as it is run in conduit.
The three types of pump cable commonly used in the United States today are twisted, flat parallel and heavy-duty flat jacketed. Although flat jacketed cable provides the most mechanical protection, it is the most expensive. Use flat jacketed for sure with steel well casing, or if you are working in a hard rock hole where abrasion of the pump cable between the drop pipe and the inner wall of the well is likely to occur.
On the other hand, if you are using PVC well casing, the twisted or flat parallel would be a reasonable choice because of the lower cost the two are about the same price , and the fact that the conditions in the well do not lend themselves to excessive abrasion. Submersible pump cable comes in a multitude of sizes. About the largest pump cable you will ever see in water well applications is MCM. We are talking heavy cable — more than five pounds per foot for three conductors.
If you are doing residential work, most of the pump cable you use will be in the 6 to 14 AWG range. You can buy size 10 pump cable with as few as 19 strands from some manufacturers, and as many as 49 strands from others. If flexibility is important to you, for instance, if you live in a cold climate where the cold temperature makes the cable difficult to work with, choose a product with finer stranding.
The dielectric material that is used to insulate the individual conductors, and in the jacket of heavy-duty flat jacketed pump cable, has a lot to do with the flexibility of the finished product as well. Rubber is the most flexible, but it also is the most expensive. The compounding of PVC insulation and jacket material can be adjusted to make the final product very flexible, approaching that of rubber. In , the NEC started requiring all submersible pump motors to be grounded to the service entrance.
This means running a green ground wire from the motor to the service entrance. Submersible Pump Wire Cable Guard. Electrical Tape. LHS4 For use on 8, 6, 4 and 2 Wire. Submersible water well pumps need electric wire capable of use in under water situations. We stock 3 wire plus ground submersible pump cable, as well as 2 wire plus ground pump cable. The following chart shows the maximum distance in feet you can go from the power source, where the meter supplies the electrical power, to the submersible pump motor in the well.
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