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Re: Massive Confusion.

You almost definitely have a defective current meter. Either that, or your
fuse was really badly made. (I'm assuming that the 90A run time was long
enough to blow it, if you're using extra slow-blow fuses.) If so, you can
probably sue the company for $20 billion and buy a custom-made 400kVA xfmr.
Either way, the problem disappears. :)

           --Mr. Postman (Doug Brunner)
                <dabrunner-at-earthlink-dot-net>
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Thursday, November 19, 1998 3:22 AM
Subject: Massive Confusion.


>Original Poster: "Coiler" <mycroft-at-access1-dot-net>
>
>Someone that is using a welder as a ballast, I would like to talk to you
>about your current measurements. Something is very confusing about my
>setup.
>I am using a lincon 225A welder as ballast for my pig. I shorted the output
>of the pig, and took current readings with a borrowed current probe.
>I got the following readings :
>Welder  | AC Current
>40A   | 20A
>60A   | 28A
>75A   | 33.7A
>90A     |   40A
>105A   |   47.4A
>120A   |   52.3A
>At this point, I got worried, as I only have a 5KVA pig, and this
represents
>almost 12KVA input power, if you belive the readings. What bothers me, is
>this
>is 50% of the setting.. and the welder wants a 50amp breaker. Mind you, my
>30A fuses were fat-dumb-happy at this setting.
>So I cranked it up to 225A setting. At this point, I showed 90A on my meter
>and finally my 30A fuse popped. (note that for this, I bypassed the pig)
>This makes *no* sense to me. [though the readings are consistant with
>what I measured via a resistor in line] its almost like the readings are
>100% of the true readings.
>This leads to 2 questions:
>1) will someone that uses a Lincon welder and can measure the current
please
>   check their values at the above settings.
>2) Just how far can I push a 5KVA pig without it going *POOF*.
>
>I admit I am a little disappointed.. I was hoping to be able to start at
>about
>2KVA, but if these numbers are correct, the minimum I have is 4.8KVA :/
>
>
>Michael Baumann
>Coiler, Homebrewer, Nerd. mycroft-at-access1-dot-net
>http://www.access1-dot-net/mycroft
>
>
>