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- Older two conductor: Red is negative, black is positive.
- Older three conductor: Positive was red, negative was black and earth was yellow. The addition of the earth ground allowed for the use of party lines.
- Four conductor: Positive was red, negative was black. The second pair of wires was connected to a transformer creating 48VDC to power the lights on telephone sets like the Princess model. Black is positive and yellow is negative. When LEDs allowed phone illumination to be powered with the Central Office battery and ground, the second set of wires could be used for a second line.
What else can I help you with?
2002 escalade radio wiring diagram?
wiring 2002 escalade radio
Wiring diagram Toyota Avalon 2002?
provide wiring diagram for Avalon 2002
What is the schematics for a 1995 Jeep Grand Cherokee lmtd?
go to wiring-diagram.com. for @ $13 you can get the wiring diagrams.
Color code Radio wiring for a 1998 safari?
www.the12volt.com has all factory wiring diagrams for free.
What is the upgraded radio wiring diagram for 1998 ford explorer XLT?
http://www.modifiedlife.com/1998-ford-explorer-car-radio-stereo-wiring-diagram/ Color codes for factory wiring
What wire is covered in brown plastic?
The modern wiring colouring is:Blue is neutral.Brown is positive.Green/yellow stripe is the earth.The original colours were:Red is positive.Black is neutral.Green is earth.
Can industrial electrician can work as a home electrician?
Yes! compared to industrial or commercial wiring, residential wiring is very basic. A Journeyman electricain is expected to have experience in all 3 fields.
How much does the average car wiring loom weigh?
The Beetle wiring loom wouldn't weigh that much compared to other car wiring looms due to the lack of air conditioning ( at least for the majority of them) and heater systems wiring. Modern vehicles have much heavier looms due to the complexity of electronics involved. I have not found a source that gave weights for wiring looms.
Where can I find a Wiring diagram for 1983 C10?
found my service mannuals on eBay for 50 bucks. a great deal compared to over a hundred from the dealer.
What possible reasons exist for power windows not working on a 1995 Nissan Pathfinder?
Fuse ... switch ... short in wiring ... fuseable link ... window motor ... etc. Electrical problems on todays vehicles are the mechanics nightmare. There is literally miles and miles of wiring inside a car nowadays. Finding a short or pinched wire will take hours, if not days to find. To make matters worse, some of the vehicle wiring is not accessible unless the car is taken apart.
Is copper soft?
Copper is a relatively soft metal compared to others like iron or steel. It has a Mohs hardness of 2.5-3, making it softer and more malleable, which is why it is often used for electrical wiring and plumbing.
Why is brass not used for electrical wiring?
Brass has high electrical resistance compared to other metals like copper and aluminum, making it less efficient for conducting electricity. Copper and aluminum are preferred for electrical wiring due to their excellent conductivity and cost-effectiveness.
Will you find aluminum used for conducting wire?
Yes, aluminum is commonly used as a conductor in electrical wiring due to its good conductivity and relative cost-effectiveness compared to copper.
How can I upgrade my home's wiring to fiber optic technology for faster and more reliable internet connectivity?
To upgrade your home's wiring to fiber optic technology for faster and more reliable internet connectivity, you will need to contact a professional service provider specializing in fiber optic installations. They will assess your current wiring setup, install the necessary fiber optic cables, and configure your network to ensure optimal performance. This upgrade will significantly improve your internet speed and reliability compared to traditional wiring methods.
What are the advantages of using a PVC electrical box for wiring installations?
The advantages of using a PVC electrical box for wiring installations include its durability, resistance to corrosion, and ability to provide protection against electrical shocks. Additionally, PVC boxes are lightweight, easy to install, and cost-effective compared to metal boxes.
Scion xa wiring diagram?
Scion XA wiring diagram is a drawing and information. In the wiring diagram it shows how to work the wiring.
What is the Wiring diagram for a 2002 Chevrolet Impala?
Wiring diagram for what area? There is 10 miles of wiring. wiring diagrams for DELCO "RDS" radio
