Hi all,
Well, I picked up a 500VA mains isolation transformer today: 240v in;
240v out. It's not brand new so I thought I'd best check it over. I hooked up live and neutral to the two connectors on the primary side of it, and two probes from a voltmeter on the secondary. Without anything else attached and no current drawn yet, I applied the tip of a neon screwdriver to the four connections with the following results:Primary live connection: strong yellow light from the neon tester
Primary neutral connection: no response from the neon tester
2x Secondary connections: both equally light up the tester by about half as much as the live primary did.I was under the impression I would see no response at all from the neon tester on the secondary side since it's supposedly floating; yet I *did* get a reaction of sorts from the tester. What's going on here? Is the transformer faulty?
cheers, cd.