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<font face="Arial">I just read an article in Protocol magazine about
using small (<= 10kW) generators on a film set. It was
mentioned that for sound they had to place one generator 200 feet
away and to compensate for the line drop in all that wire they
used a tapped transformer to drop the ~200V coming out of the extension
cord to 120V.<br>
<br>
It seems, if code would allow, a better idea to put a boost
(step-up) transformer at the generator to raise the 240V closer to
300V and THEN have a buck (step-down) transformer at the lamp end
of the extension. The higher voltage would result in much lower
loses in the wire, fewer melted plugs (a problem they reported)
and get you more usable Watts at the lighting end.<br>
<br>
So, the question would be, most low voltage USA wire is marked for
at least 300V max use. How far could you push the 240V up without
upsetting the AHJ? Maybe 277?<br>
<br>
Of course if you happened to have access to a spool of 600V wire,
you could just bump it up to 440V at the generator and use really
lightweight wire going to the buck transformer at the lights.<br>
</font>
<pre class="moz-signature" cols="72">--
Jerry Durand, Durand Interstellar, Inc.
<a class="moz-txt-link-abbreviated" href="http://www.DurandInterstellar.com">www.DurandInterstellar.com</a>
tel: +1 408 356-3886
@DurandInterstel
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