What is the breakdown voltage?

Question

What is the breakdown voltage on insulation for common vinyl coated copper wire?
For household 120V AC wiring?
For automotive spark plug wires?

Answer 1

In Australia, common insulated wire is rated for 1kV



Spark plug wires should be good for at least 30-40kV

Answer 2

The breakdown voltage is when the voltage on the gate causes the transistor to conduct. I think you are talking about insulation and it is printed on the insulation of the conductor. If a conductor is rated at 220V then it can handle that voltage easily. I would not use 277V unless it is a low current device and only for temporary repair.

Answer 3

PVC and polyethylene are the two main polymer types used for wire and cable insulation,

with PVC comprising about 2/3 of the insulation used for building wiring in the US1. Apart from

wires and cables, PVC is also commonly used as the insulator in other electrotechnical products,

such as plugs and connectors. PVC insulation in electrical cables for use in 120 VAC applications

typically comes in thicknesses of 0.4 – 1.2 mm. For a typical formulation of PVC, test results suggest

that such thicknesses could withstand voltages of 3 – 14 kV. Since the peak voltage corresponding

to 120 volts rms (root-mean-square) is 170 V, it would at first seem that a huge safety

factor is built in and that failure is most unlikely.

Answer 4

The selection imprinted on the cap is the optimal voltage you may placed on the capacitor for long term reliability. the truthfully breakdown voltage is somewhat bigger, yet how lots above is unknown. it might desire to be 50 volts, that's a million volt. So in no way perform a cap above the score. .

Answer 5

Sorry, I remember the term "breakdown" voltage having to do with semi-conductors. Let me see if I can find some info for you.



It would seem that there are too many factors to consider (e.g., the size of the wires, the quality of the insulation coating, environmental factors such as temperature) to be able to answer your questions.