[Amps] Dahl transformer BC plate transformer center-tap insulation?

[TexasRF at aol.com]

Here is another example of the need for a hv leakage tester. One can  
connect the tester between any secondary terminal and the core to determine the  
suitability of the transformer to operate in a bridge circuit.
 
While at it, might as well measure leakage between the secondary and  
primary windings.
 
 Home made testers are not expensive or difficult to build.
 
73,
Gerald K5GW
 
 
 
In a message dated 9/2/2011 8:05:55 A.M. Central Daylight Time,  
audioguy at q.com writes:

...  resend, original didn't reflect for whatever reason.

If you were  looking at a Dahl plate transformer removed from a BC 
transmitter that had  a center-tapped secondary, would you bet that the 
insulation would be good  enough to use the transformer with a bridge 
instead of a full-wave  rectifier, or would you assume that it isn't for 
safety's sake?

I  have no idea of the age of the transformer. It has the standard Dahl 
gloss  black paint with red data plate, and the terminals are mounted on  
pinkish-red terminal boards.

Thanks,
Jim,  N7CXI

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