[Boatanchors] HV fusing in amplifiers

[Jim Wilhite]

I have seen people take one strand out of AC wire such as an extension cord 
and mount it on two terminal strips with the HV going through that.  Can't 
remember the wire size nor current (seems as if it is # 28 or 30), but they 
claimed it worked.

73  Jim
W5JO

----- Original Message ----- 
From: "Rbethman" <rbethman at comcast.net>
To: <Boatanchors at mailman.qth.net>
Sent: Wednesday, May 04, 2005 6:58 PM
Subject: [Boatanchors] HV fusing in amplifiers


> Group,
>
> Has anyone thought about high voltage fusing in an amplifier or "old" BA?
>
> Usually there is a choke in the RF output leg to ground, in the event that 
> the plate blocking cap fails.
>
> Yes, we usually have power supply fuses or circuit breakers.  BUT - what 
> will get fried?  How do you protect all that?
>
> I've got ONE HV fuse by GE.  Its design voltage is 2400V.  It is rated at 
> 7A, which is obviously a ridiculous value.  HOWEVER, even IF it was a 
> reasonable current rating, it is HUGE!  It is 11" long and 2" in dia.
>
> Where in the world would you even mount it?
> -- 
> Bob - NØDGN
>                       Bob Bethman - NØDGN
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