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In Reply to: RE: secodary filament amperage posted by Neff on October 06, 2010 at 13:23:45
so you are saying that the EI core trans was designed at about 500 cmil
per amp, but the toroidal was designed at 1000 cmil for the center taped filament and at 500 cmil for the other filament. it seems strange to me that the designer of the toroid would use a 1000 and a 500 cmil spec in the same transformer, when both taps are rated at 4 amps???
Follow Ups:
All transformers used 500 to 1000cm of copper wire per ampere. Older transformers used larger wires due to lower temperature rating of the wire insulation. Standard was 700cm. The core type has nothing to do with wire size.
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