I have a toroidal power transformer that I'm considering using for a power supply project. It has two secondaries -- 18v-0-18v and 0-48v. Part number is 7-40-0011 (already tried googling it, no luck). I'm pretty sure I purchased it from one of the online surplus places, maybe All Electronics, probably about a decade ago.
What's the best way to determine how many amps the secondary is rated for? Can I just throw a resistive load on it an measure the current? or does this risk damage?