High voltage electrical wire for ESL

Fabien Lefebvre · 19th August 2010, 01:48 PM

Hello,
I am looking for high voltage electrical wire for ESL.
I did find some which is cheap but rather big: diameter of about 6.6mm.
This kind is wire is normally used for neon lights and is rated for 10kV.
I would like to find some much thinner (between 2.7 and 3.4mm), for wiring the tweeters of ESL57 thus capable of withstanding only 1.5kV. I would use it as well for internal wiring of bass panel.
Nexans produces such cable (HT 306) but I do not need 100m of cable (Farnell sells it).
Where can I find such wire ?

Conrad Hoffman · 19th August 2010, 04:34 PM

1.5KV should be pretty easy. Maybe some ordinary Teflon hook up wire with an added piece of Teflon tubing? Not sure where to get it, but there's also test probe wire rated for that, as well as the wire used on the HV terminal of CRTs.

Calvin · 20th August 2010, 02:23 PM

Hi,

double insulated litz wires or silicone insulated litz wires used for measurement purposes are ok. The thickness of the insulation is more than 1mm which is good for much higher voltage than specified. Diameters range from ~2.5mm to ~4mm.

jauu
Calvin

johnmarkp · 20th August 2010, 03:40 PM

Stereophile did an article on rebuilding Quads back in 06. It has several sources listed for parts, including one for wire. I use them in two rebuilds I did and they worked well.

DaveG · 20th August 2010, 09:03 PM

Allied #885-0097

Pomona Electronics - 6733-0 - Wire - Hook-Up - Allied Electronics

Fabien Lefebvre · 20th August 2010, 09:22 PM

Quote:

Originally Posted by DaveG

Allied #885-0097

Pomona Electronics - 6733-0 - Wire - Hook-Up - Allied Electronics

This one looks great ! 3.65mm for diameter if I compute well.
Thanks everybody for your answers: not sure I find the one above in
my neighbourhood thus I will explore other suggestions as well.

Rodeodave · 20th August 2010, 09:25 PM

I think ignition or spark plug wire would work too...

alexberg · 21st August 2010, 05:48 PM

Quote:

Originally Posted by Rodeodave

I think ignition or spark plug wire would work too...

Especially if they are made of high resistance thread wound around or totally encapsulated into ferrite impregnated plastic core , thus having 10-50k Ohm per meter as well as substantial inductance.
Alex
Really old ones with copper conductors will do...

bentl · 21st August 2010, 06:03 PM

Hi, I must admit that when I built my ESL@s I used what I had of cables.

Bias-voltage is run through thin (0,25mm) tefloncoated hookup wire, and signal before and after stepup trafo is normal speaker cable.

I have a bias voltage adjustable between 0 - 7200v normally running at 5500vdc and signal voltage is max 6000v.

I have not had any problems, flashovers etc.

Regards,

Bent

stokessd · 22nd August 2010, 01:54 AM

One trick is to go buy some PVC tubing at Lowes or Home Depot etc, and slide a standard piece of wire inside it. It's not elegant, but particularly for prototyping it's hard to beat the ease and price.

Sheldon

19th August 2010, 01:48 PM	#1
Fabien Lefebvre diyAudio Member Join Date: Feb 2004 Location: Caen - France	High voltage electrical wire for ESL Hello, I am looking for high voltage electrical wire for ESL. I did find some which is cheap but rather big: diameter of about 6.6mm. This kind is wire is normally used for neon lights and is rated for 10kV. I would like to find some much thinner (between 2.7 and 3.4mm), for wiring the tweeters of ESL57 thus capable of withstanding only 1.5kV. I would use it as well for internal wiring of bass panel. Nexans produces such cable (HT 306) but I do not need 100m of cable (Farnell sells it). Where can I find such wire ? __________________ Quad fan ! One hobby: re-build ESL 57

19th August 2010, 04:34 PM	#2
Conrad Hoffman diyAudio Member Join Date: Mar 2007 Location: Canandaigua, NY USA	1.5KV should be pretty easy. Maybe some ordinary Teflon hook up wire with an added piece of Teflon tubing? Not sure where to get it, but there's also test probe wire rated for that, as well as the wire used on the HV terminal of CRTs. __________________ I used to be an audiophool like you but then I took an arrow to the knee.

20th August 2010, 09:25 PM	#7
Rodeodave diyAudio Member Join Date: Dec 2004 Location: in the alps Blog Entries: 1	I think ignition or spark plug wire would work too... __________________ Gravity - Making the G since 13.7 billion B.C.

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20th August 2010, 02:23 PM	#3
Calvin diyAudio Member Join Date: Nov 2004 Location: close to Basel	Hi, double insulated litz wires or silicone insulated litz wires used for measurement purposes are ok. The thickness of the insulation is more than 1mm which is good for much higher voltage than specified. Diameters range from ~2.5mm to ~4mm. jauu Calvin

20th August 2010, 03:40 PM	#4
johnmarkp diyAudio Member Join Date: Apr 2004 Location: Wisconsin	Stereophile did an article on rebuilding Quads back in 06. It has several sources listed for parts, including one for wire. I use them in two rebuilds I did and they worked well.

20th August 2010, 09:03 PM	#5
DaveG diyAudio Member Join Date: Feb 2007 Location: West Coast - SF Bay Area -	Allied #885-0097 Pomona Electronics - 6733-0 - Wire - Hook-Up - Allied Electronics

21st August 2010, 06:03 PM	#9
bentl diyAudio Member Join Date: Apr 2009 Location: Norway	Hi, I must admit that when I built my ESL@s I used what I had of cables. Bias-voltage is run through thin (0,25mm) tefloncoated hookup wire, and signal before and after stepup trafo is normal speaker cable. I have a bias voltage adjustable between 0 - 7200v normally running at 5500vdc and signal voltage is max 6000v. I have not had any problems, flashovers etc. Regards, Bent

22nd August 2010, 01:54 AM	#10
stokessd diyAudio Member Join Date: Nov 2002 Location: Fort Wayne, IN	One trick is to go buy some PVC tubing at Lowes or Home Depot etc, and slide a standard piece of wire inside it. It's not elegant, but particularly for prototyping it's hard to beat the ease and price. Sheldon

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