[Milsurplus] Fuses to protect transformers

[Richard Brunner]

Also people were less concerned about safety back in them days.
Um, that was about 20,000 amps - a big bang  - love them fuses.

Richard

Heathkit = might be built by anybody
Anybody = might be color blind
Green wire goes to ….

If you ever have energized a 200A 3 phase circuit that had the neutral and 
one hot confused (been there done that - didn’t wire it though), you *know* 
what can happen.

With two phase at house levels it’s not quite as exciting. You still could 
damage something.

Bob

On Mar 17, 2014, at 9:06 PM, Richard Brunner <brunneraa1p at comcast.net> 
wrote:

> No advantage that I can see.  I would put the fuse in the hot leg, because
> if it's in the neutral leg and blows the hot wire is still live in the
> chassis.  Fuses are pretty reliable, and the worst thing that can happen 
> is
> it fails open.  I don't think much thought was given to the dual fuse 
> plug.
>
> Addendum:  Re; Heathkit dual fuse plug.  They probably thought both fuses 
> would blow, isolating the chassis.  They might, but would you bet your 
> life on it?
>
> Richard, AA1P
>
>
>> Maybe I missed this but is there any advantage to fusing both sides of 
>> the
>> primary?  I remember the famous Heathkit plugs with twin fuses.  Was the
>> redundancy there for a reason?
>> Doug