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I assume you mean hot, neutral and ground. The answer is simple...the advantage is life or death in a home wiring situation. The only true job of electricity is to seek ground and it will find it through the path of least resistance. If the neutral wire of a 110v 2 wire system becomes open, the only path to ground may be your body. If that same wire opens on a 3 wire grounding system, there is a backup path through the ground wire creating a low resistance to ground. Safety issue.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoThe third wire provides a ground to ensure safety. Older houses, pre1950 probably have the two wire system, some even have tube and knob.
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Why two phase supply is not used?
It is in some places, but not generally because it requires at least 3 wires, and can only transmit 2/3 of the power of an equivalent 3 wire, 3 phase system.
What are the procedures for the connection of single and 3 phase circuits?
Single phase connection has 1 phase wire and a neutral wire. Another wire for protective earth. In three phase system, motor can be connected in star or delta. Most AC induction motors are in Delta. Power distribution system is generally 3 phase 4 wire. Transmission system is 3 phase high voltage. Industry uses 3 phase system, where as 1 phase is for domestic, commercial applications. Both 1 and 3 phase system has a frequency. It is either 50 Hz or 60 Hz, depending upon the country or region.
In electrical terms what does 2p3w refer to?
2 pole, 3 wire.
What is the accuracy of 3 phase 4 wire system to 3 phase 3 wire metering system?
It makes no difference as to what system is being monitored. The meter itself has to be accurate because it comes under the government's weights and measures department. Meters in the field are checked if the consumer thinks there is a problem with their billing. Before a meter is put into service they are all checked for accuracy by an independent agency.
Can delta connection be used on 3 phase 4 wire system?
A delta connected appliance can be connected to a 3-phase system by leaving the neutral unconnected. The appliance must be properly earthed.
Explain the comparison between dc 2 wire system and ac single phase 2 wire system and ac 3 phase 3 wire system and ac 3 phase 4 wire system?
of all of dem 3 phase 3 wire is most economical as it uses less conductor dan in 4 wire system, 3 phase 3 wire is used in transmission and 4 wire in distribution as it has 3 live and one neutral wire. 3 phase needs lesser conductor size than 2 phase 4 wire for the same power. 3 wire dc feeder is more economical than 2 wire dc feeder for the same power. that was all i cud get..... hope u find it a lil helpful.
How can you connect a system working with 60Hz 1 Hot wire 1 neutral wire and a ground wire to my utility system that works with 60Hz two hot wires and a neutral wire?
Your 2-wire system is actually connected to one "side" of the 3-wire system. In your utility's 3-wire system you have 2 hot wires that are attached to each end of a tranformer winding and the neutral is attached in the middle and grounded. Typically in the US this gives you 240v (or something similar) between hot leads and 120v from each hot lead to neutral or ground.
What is the Advantages of 3 wire rtd over 2 wire rtd?
It is more accurate, a 4 wire is more accurate than 3 wire and 3 wire is more accurate than 2 wire.
Can you turn a 14-2 wire into a 14-3?
The only way to change a 14-2 wire into a 14-3 wire is to physically remove the 14-2 and replace it with a 14-3.
How many wires are in a two wire system?
3
How do you upgrade a 2 wire actuator to a 3 wire actuator on a 95 Chevy pickup?
If it is a factory doorlock system you want to keep using a two wire because the locks work off of reverse polarity
Will a 2 pole wire work with a 3 pole plug?
A 2-pole wire will not work on a 3-pole plug. You will need to use a 3-pole wire on a 3-pole plug.
How does 3 wire and 4 wire system differs?
If you are referring to a.c. three-phase systems, then a three-wire system is associated with a delta-connected system, while a four-wire system is associated with a star, or wye, system. The conductors being three line conductors and a neutral conductor.
In a 3 phase 3 wire system what is the polarity of each conductor?
in a 3 Wire system runs AC , alternating current,so the polarity changes 50 or 60 times per second ,depending on the frequency in your electrical system.
What are the advantages disadvantages of 2 or 3 wire deep well pumps?
2 wire pumps have the start controls inside the motor, 3 wire have a separate start panel that needs to be mounted in a dry location above ground. If there is a problem with capacitors or relays, the 3 wire panel can be repaired easily. Not so much with the 2 wire. 2 wire can be cheaper and quicker to install.
Why two phase supply is not used?
It is in some places, but not generally because it requires at least 3 wires, and can only transmit 2/3 of the power of an equivalent 3 wire, 3 phase system.
What are the different RTD types?
2 wire.3 wire nd 4 wire...rtd... 3 wire rtd is widly used....hv good accuracy...
