Re: [TCML] HV wire ?

[Michael Twieg <mdt24@xxxxxxxx>]

We don't have an extravagant budget.  We fab everything possible (the copper
bus sheets, our case, the heatsinks, our topload) with our own manpower with
the equipment we have access to.  We rarely buy anything other than raw
materials and components.  We want professional quality, but we can usually
avoid professional prices.

-Mike

On Wed, Jun 16, 2010 at 2:58 PM, McCauley, Daniel H <
daniel.h.mccauley@xxxxxxxx> wrote:

> To be honest, if you already have the funds for CNC'd bus sheets, high-flow
> water-cooled custom heatsinks, 19" travel racks, etc..., then a few
> kilobucks of the professional wire you need should only be a drop in the
> bucket compared to what you are already spending. . .
>
> I mean, if this is for professional demonstration use, why skimp and go for
> surplus wire.  Just go ahead and do it right from the start with something
> that meets all your demanding requirements from the get-go.
>
> Also, if you only need a few feet, HV wire suppliers will almost always
> provide you samples, providing they have it in stock.
>
> Dan
>
>
>
> Thanks everyone for the tips and questions.  It was difficult to find what
> we needed in small quantities, most companies want to sell 100'
> or 500' spools for kilobucks.  We ended up getting a donation of 20'
> of 25kv 1/0 from a local electric supply company, however our backup plan
> was this wire here:
>
> http://www.tpcwire.com/tpc2.aspx?Id=MediumVoltage_MobileSubStation_TypeSHCables
>
> We found a lot of wire meant for burial that was suitable, but not flexible
> enough for our application.  The cable meant for a "mobile substation" has
> thinner strands and non-pvc casings so they're less stiff than the stuff
> meant for burial.
>
> We're trying to make a professional go at this coil, we've got CNC'd bus
> sheets, high-flow water-cooled custom heatsinks for the h-bridge,
> shock-mount 19" travel racks for all our power electronics, and so forth.
>  For a less demanding coil we would have gone with the sleeved option, or
> just no HV shielding and try to position things so it's not a problem.  For
> this coil we want to arrive at a venue and be set up to do a musical tesla
> coil show within 1 hour, so we need a guaranteed no-problem solution, hence
> the HV wire.
>
> In terms of gauge, we wanted 1/0 because we are handling lots of current
> and want low resistance.
>
> many thanks again for the comments, hope this thread will be helpful to
> future googler's.
> Ian
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