Dgold
Avoid DIYer
I killed my 240v to 24v (65va) transformer in my air handler tonight, by hooking up to the secondary side to another 24v source - I know stupid me. I know it's dead because the multimeter reads 240v across the primary terminals, but 0v across the secondary terminals. It's internally fused, but not serviceable, and had been buzzing loudly before I got to it.
So I've got another transformer on order (Mars brand, 75va rated), but have two questions:
On the Primary (240v) side, the terminals were labeled "common" and "240", but I wouldn't think it matters which way the wires are hooked up -- since both the "common" and "240" both get connected to a 120v "hot" leg. Am I right, or does it matter?
What about the secondary (24v) side? One wire ultimately goes to the "R" on the terminal board, and another to the "B". Does it matter which goes where?
Thanks,
David
So I've got another transformer on order (Mars brand, 75va rated), but have two questions:
On the Primary (240v) side, the terminals were labeled "common" and "240", but I wouldn't think it matters which way the wires are hooked up -- since both the "common" and "240" both get connected to a 120v "hot" leg. Am I right, or does it matter?
What about the secondary (24v) side? One wire ultimately goes to the "R" on the terminal board, and another to the "B". Does it matter which goes where?
Thanks,
David