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Wire construction for capped tube plates
Wire construction for capped tube plates
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Old 16th March 2010, 06:54 PM   #11
TheGimp is offline TheGimp  United States
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5KV rated 18AWG (65x36) rubber insulated 90 degreeC, breakdown voltage 20,000V.

Sounds like a good choice to me.
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Old 16th March 2010, 08:32 PM   #12
aardvarkash10 is offline aardvarkash10  New Zealand
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another vote for meter lead wire. Works great on my EL36/6DQ6/807 amps...

You can go punk and use a crocodile clip for the termination, but a cage is then a must have!
"It may not be easy for some to not hear differences, even if they are not there." - Vacuphile,
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Old 16th March 2010, 09:10 PM   #13
tomchr is offline tomchr  Canada
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What's a good source for the flexible test lead wire in low quantity (preferably by the foot/meter)?

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Old 16th March 2010, 09:28 PM   #14
HollowState is offline HollowState  United States
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Originally Posted by tomchr View Post
What's a good source for the flexible test lead wire in low quantity (preferably by the foot/meter)?
I too like test lead wire from Belden, #8899. It's 5KV 18 gauge rubber covered. I get it on eBay when it shows up. I also like Markel #3239 silicone covered. Very heat resistant (150C) and very flexible. Good to 30KV but not too thick. There is someone on eBay in China selling HV wire that appears very similar and in various sizes. I've never used it though so I can't be totally sure what it's like. Search for *high voltage* (under business and industrial) and you'll find it in short lenghts.
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Old 16th March 2010, 10:19 PM   #15
wrenchone is offline wrenchone  United States
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I use the silicone ultraflexible wire favored by model car enthusiasts. It has high temperature capability, withstands the voltage, and is available in a variety of colors (red, blue, black, and yellow). No need to use any gauge larger than 18...
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Old 17th March 2010, 12:07 AM   #16
refference is offline refference  Brazil
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Originally Posted by moonbird View Post
Hello all --
What type of insulation is best? cotton? teflon? How about gauge? Stranded or solid?? Thx much!
Hi moonbird ,

When connecting tube caps , I ALWAYS use SILICONE insulated , stranded wire, rated for 300 C , 1.0 or 1.5 mm2 , and a ceramic cap ( forget about
any plastic insulation for the wire or the cap ,like PVC , mylar , etc , all of them will melt ) . You can buy it by meters ( or feet ) , in any good store that sells electric cables .

Minimum rated voltage insulation : 750 Volts

Teflon is also very good , but the price is high .

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Old 17th March 2010, 11:01 AM   #17
Shoog is offline Shoog
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I sources my meter wire from dead meters. After you've been in the hobby for a while there's usually plenty of them about

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