Fuses are more reliable, those breakers trip a little bit sooner every time
they let go and sometimes its a replacement nightmare to get at them. I had
lots of curse words for a Thunderbolt II a few years ago.
Carl
----- Original Message -----
From: "Jim Thomson" <jim.thom@telus.net>
To: <amps@contesting.com>
Sent: Friday, January 07, 2011 7:02 PM
Subject: [Amps] Fuses
> Date: Fri, 7 Jan 2011 10:45:07 -0500
> From: "Carl" <km1h@jeremy.mv.com>
> Subject: Re: [Amps] Fuses
>
> Just dont over fuse. The usual 1200W out amp uses 10-12A; 15A for
> 1500-2200W, etc at 240VAC.
>
> Carl
> KM1H
>
> ## why didn't they just get off the..'get cheap program' and use a fast
> breaker ??
> Ideally, a 2 x pole, 15A , controlled magnetic hydraulic breaker would
> be the 1st choice,
> one with an..."instant trip" . The instant trip types are the fastest.
> They just remove the oil
> from the reservoir, so it's super fast. The normal, slow, and motor start
> types just use different grades
> of viscosity for the oil used. I use em all the time for my various HB
> projects. Any HB B+ supply
> always gets a super fast magnetic hydraulic breaker..for the primary of
> the plate xfmr. [they are also NOT
> affected by ambient temp either].
>
> ## My Drake L4PS power supplies use 2 x 15A breakers, spaced a few inch's
> apart. One per hot leg.
> These are the simple push button type. [ push to re-set]. The
> advantage of the 2 x pole type noted above is..
> the trip bar between em ensures both sides of the 240 line open up.
>
> ## You would think for the megabuck that alpha charges for their amps,
> that they would not cheap out..and use
> simple fuses !
>
> Later... Jim VE7RF
>
>
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