secodary filament amperage

Tube DIY Asylum

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i have an EI core transformer with a 3.15-0-3.15 secondary whose rated amperage is 7.5 amps, whose three wires are 14 gauge. i have a toroidal transformer with a 3.15-0-3.15 secondary whose rated amperage is 4 amps,
whose three wires are 14 gauge, this toroid also has a 0-6.3 v secondary
rated at 4 amps whose two wires are 20 gage. can some explain why such divergent ratings/wire gauges ? also what maximum operational amperage should be be expected from the three windings?

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The Cable Cooker

Topic - secodary filament amperage - tubeflash 12:29:17 10/6/10 (4)

RE: secodary filament amperage - Tom Bavis 05:31:02 10/9/10 (0)

RE: secodary filament amperage - Neff 13:23:45 10/6/10 (2)

RE: secodary filament amperage - tubeflash 16:01:36 10/6/10 (1)

RE: secodary filament amperage - Neff 17:06:20 10/6/10 (0)

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