[Amps] Coax for MHV connectors?

[Carl]

RG-142 if you want the shielding braid and long term reliability but be 
careful of cold flow and use wide radius bends; I limit RG-58/59 to 2500VDC.

Carl
KM1H



----- Original Message ----- 
From: "Jim Barber" <audioguy at q.com>
To: <Amps at contesting.com>
Sent: Saturday, June 23, 2012 6:39 PM
Subject: [Amps] Coax for MHV connectors?


>I need to make up some MHV cables for a 4KV 2A max DC supply, (both B+
> and B-) and I made the mistake of looking up the voltage ratings for
> RG-58, RG-59 and LMR-240 cables, all commonly used with those connectors:
>
> RG-58        1900V
> RG-59        2300V
> LMR-240      1500V
>
> In a word, yikes! RG-59 has the highest rating, but I like it the least
> for exposed cables because of the solid center conductor
>
> The connectors are rated at 5KVDC, but what cable type? It seems like
> every time I think I know something... ?
>
> I'm tempted to give it up and machine my own bulkhead pass-throughs out
> of acrylic and use HV cable instead. In fact I would have already except
> I'd really like the cables to be detachable.
>
> Comments?
>
> Thanks,
> Jim N7CXI
>
>
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