That’s something that I miss I guess. As I have 240V for the primary:What's not spec about the PT?
600V CT HV: 300:0:300
6.3V CT: 3.15:0:3.15
Choice of either 5 or 6.3 volt, I assume you'll use the 5V orange wire for 5U4
Only have a variac. Will try to do some reading about how to do this. Thank you. Was my suspicion to. Make more senseIt looks like one of the browns is white?
I'd try to figure out first what wires are the primary. First with ohmmeter, then with low voltage on a light bulb current limiter.
Then check secondary voltages and do some math...
@mountainhick @NTCNeeded to redo the component board since it became a mirror image due to the chassis style. The PT does not make sense to me if one looks at the specs and compare it with the wires The 5v is a 3A so a 5u4 will work.it’s upgraded said a note that was included. The Hammond type that I’m used to is a lot different and easier. View attachment 1000246 View attachment 1000247
I agree.@mountainhick @NTC
Got som alone time and took out the DMM. Continuity between brown, white and blue so should be the primaries. Checked resistance between the windings.
White-brown= 8.0 ohm
White-blue= 0.2 ohm
Brown-blue= 7.6 ohm
Then I suspect that brown is zero and white is 240V. So white “L” and brown “N” for 240 in wall? Ok deductive thinking?
perfect! the variac is a great tool to check the PT wiring with low voltage.
After all your building do you not have a light bulb limiter?
I don't understand. DMMs are just meters, and they do measure voltage. All I am recommending to confirm correct wires for installation. You do not need to measure current to do this.Just read this thing about hooking up a DMM to a variac. Wouldn’t that do the same if I measure current? Less stuff laying around and I do have two spare DMM’s.
I read somewhere that you could connect an DMM ammeter to the variac so that you also could measure the current. Always Fun to see the current draw. Ran away this lunch an bought me stuff to build me a lightbulb limiter.I don't understand. DMMs are just meters, and they do measure voltage. All I am recommending to confirm correct wires for installation. You do not need to measure current to do this.