[Amps] Possible issue with B- run in wire with less than HV rating? (Separate HV PSU and RF decks)

[Bill, W6WRT]

ORIGINAL MESSAGE:

On Tue, 14 Sep 2010 13:45:31 +0200, Marius Hauki
<rezycle.bin at gmail.com> wrote:

> The
>chassis to B- resistor has failed, for some reason and is open
>circuit.

<snip>
>
>Doesn this mean that we should also  use HV insulated wire on the B- ?

REPLY:

You should not be using a chassis to B- resistor. Use a pair of heavy
duty diodes instead, reverse connected. When the B+ to chassis arc
occurs they will place what is essentially a dead short from B+ to B-
and the fuses or breaker will blow. 

Bill, W6WRT