I want to use high voltage (about 3kV)

[emtae55]

TL;DR

To use the high voltage(about 3kV or more), what kind of electric wire should i use?

Hi, I want to make a electron gun, and I have to use high voltage(about 3kV or more). But I think I can't use general electric wire. So I want to know what kind of electric wire should i use to use the high voltage??

 

[DaveE]

If you need to ask this question, then you should stay away from 3kV until you have learned more about electronics. I am not being snide, I am concerned for your safety. To work with dangerous voltages you at least need to know how to research components online to determine their suitability for your application. There's a bunch of other stuff you need to know as well. Why don't you try a low voltage project?

 

[Tom.G]

What is known as "Test Lead Wire" is available with 1500V and 5000V ratings. If you need only short lengths, buying some Test Leads rated at 5000V is a source. If you need longer lengths, the mail order suppliers have it for $150 for a 100ft. spool. Here is one I found.
https://www.digikey.com/products/en?mpart=1636%20RD005&v=216

Another possibility is Spark Plug Wire used on car engines. Most of it is 'Resistance Wire', instead of wire it uses a carbonized thread. It can not carry much current and is somewhat fragile. The original Non-Resistance plug wire is probably still available, it's just that I haven't seen it the retail Auto Supply stores lately. If you are near a large body of water it may be available in Marine supply stores.

Good Luck! ...and what is your project?

Cheers,
Tom

 

[Rive]

Just taking care of the rating of the wire won't be enough. For high voltage you need to watch out for the joints, connections, the PCB and component bodies too.
With high voltage even a fingerprint can ruin your day.

 

[emtae55]

If you need to ask this question, then you should stay away from 3kV until you have learned more about electronics. I am not being snide, I am concerned for your safety. To work with dangerous voltages you at least need to know how to research components online to determine their suitability for your application. There's a bunch of other stuff you need to know as well. Why don't you try a low voltage project?

Because i should make an electron gun, so i should use high voltage:(
thanks for your concerning.

 

[emtae55]

What is known as "Test Lead Wire" is available with 1500V and 5000V ratings. If you need only short lengths, buying some Test Leads rated at 5000V is a source. If you need longer lengths, the mail order suppliers have it for $150 for a 100ft. spool. Here is one I found.
https://www.digikey.com/products/en?mpart=1636%20RD005&v=216

Another possibility is Spark Plug Wire used on car engines. Most of it is 'Resistance Wire', instead of wire it uses a carbonized thread. It can not carry much current and is somewhat fragile. The original Non-Resistance plug wire is probably still available, it's just that I haven't seen it the retail Auto Supply stores lately. If you are near a large body of water it may be available in Marine supply stores.

Good Luck! ...and what is your project?

Cheers,
Tom

my project is making electron gun
Thank you for your help:)

 

[Guineafowl]

Search “silicone high voltage cable 10kV” or similar. There are suppliers of this sort of thing for neon signs.

 

[Guineafowl]

There’s also a risk of x-rays when you’re firing electrons about. Have you looked into that?

 

[anorlunda]

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@emtae55, click on my name, start a conversation, and send me a message explaining more about your assignment, and your qualifications.