Hi Jay,
I am going to attach (link) 3 pictures of a General Radio handbook of
Variacs related to 3 phase use, which should help to understand what is
going on.
https://photos.app.goo.gl/fdVMdSUqBmRwz1Ao8
Took me a bit to find this handbook in my "mountain of good junk" around at
home :^)
Chris Reeland
Ladd Illinois USA
Sent from my Samsung Galaxy Tab® S
On Mon, Aug 9, 2021, 8:16 AM Lux, Jim <jim@xxxxxxxxxxxxx> wrote:
> On 8/8/21 5:59 PM, jhowson4 wrote:
> > Ok,Im thinking Bert is correct. I was infact able to power on at
> 120v. I'm curious now if I can power it up at 208 (ie the line to neutral
> voltage in a 240Y system) kind of odd to have a part number implying 120
> operation, but a label implying 240v operation.I think ill call the company
> and ask for more info. Note: after peaking under the hood,this variac has
> no additional taps.The name plate is obvious,Simple diagram, 3 screw
> lugs.1 wired to the beginning of the coil2 is the wiper3 is wired at about
> 75% of the coil1 and 3 are connected to the strange little transformer
> cores, which arnt paralleling chokes (no interconnection to the other
> cores) I'll update again with any useful info I may find. -JaySent from my
> Verizon, Samsung Galaxy smartphone
>
> 208/120Y has 208 between phases and 120 line/neutral.
> 240 delta has 138 line to neutral
>
> 240Y would be very unusual
>
> 480/277Y is pretty common 480 phase to phase, 277 phase to neutral
> _______________________________________________
> Tesla mailing list -- tcml@xxxxxxxxxxxxxxx
> To unsubscribe send an email to tcml-leave@xxxxxxxxxxxxxxx
>
_______________________________________________
Tesla mailing list -- tcml@xxxxxxxxxxxxxxx
To unsubscribe send an email to tcml-leave@xxxxxxxxxxxxxxx