Date: Fri Aug 24 16:42:37 2007

Author: Dale Stille

Subject: Re: Circuit breakers


Vacek and Jerry,

OK, this is for a big heavy electromagnet power supply. High current, DC,
very low voltage ( 1 to 3 volts) that I am setting up to use on my current
balance demo. (I have used AC on this in the past but am now switching
it to DC current. ) The way I have it set in my cart, I can't easily get
to the fuse in the back when it blows, so I am going to move it up
front where I can easily reach it and also easily reset it. So, according
to your info and my
own intuition, I am probably going to try a 25 amp breaker and see what

Thanks guys,

On Fri, 24 Aug 2007, Vacek Miglus wrote:

> On 8/24/07 2:46 PM, "Dale Stille" wrote:
>> Can I substitute a 30 amp circuit breaker for a 30 amp fuse???? OR,
>> should the circuit breaker be of a lower value.
> If this is electrical work, i.e. Wiring that needs to meet code, then yes
> they are interchangeable. However if you are depending on the fuse to
> protect some equipment that can't stand and over current condition then keep
> in mind that a circuit breaker acts like a slow blow fuse. It will stand
> load of 140% for quite a while (minuites or more).
> Look here for more info:
> Vacek