bokbaard
New Member
I have a simplistic problem, but I am missing some basic inductive-load know-how to be sure. My toroidal is a 240V primary, I don't know the number of turns. I know you can't just measure the resistance across the primary, but doing that with an ohmmeter, gives me 5ohms. This is pretty damn low for a mains side 240V transformer, is it not? I don't want to power this thing up until I can get some assurance on how exactly such a low resistance is possible. I=240/5 = 48A (no way).
With this said, how would I determine which fuse to use on the primary mains side, slow blow yes (for the inrush current), but what kind of rating?
With this said, how would I determine which fuse to use on the primary mains side, slow blow yes (for the inrush current), but what kind of rating?
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