[sdiy] How to predict a transformer's current capability?

[Magnus Danielson]

From: "John L Marshall" <john.l.marshall at gte.net>
Subject: Re: [sdiy] How to predict a transformer's current capability?
Date: Mon, 24 Dec 2001 13:51:23 -0800

> It used to be 220 volts nominal on the Continent and 240 volts nominal on
> the Island. I would think that transformers designed for European use would
> handle the 240 volts.

Problem is that it was not that simple of an picture really, there
where dashes of 220, 230 and 240 V all over the place. Good that we
cleared that out. In doing that we also got the three-phase from the
unround number of roughgly 380 V to eternally even 400 V. I was
immensly annoyed that TD's "220 volt" album used the incorrect
voltaged ;O)

Another thing, to get higher voltage ratings one add additional turns
on the primary coil. You get about the same amount of voltage per
turn, but less current and thus less flux. I must say it has been a
bit too long since I seriously dwelved into those calculations, but I
was under a hard teacher so things stuck AND I enjoyed it (that's why
some of it really stuck).

Cheers,
Magnus