?

Richard,? no doubt there is still DC and maybe 25 cycle AC, but all this is limited to specific plants, maybe dedicated electric transportation, large mining and such.

I have not seen? any consumer item in North America intended for connection to ?“DC mains” .

There are still many DC motors in use , but rotary or static converters get power from AC “mains” at 120V, 460V, 600V, 2300V, 4160V, 13,000V and much much higher for HVDC transmission , and I just now ?bumped into this at ?

And I started all this Nelson River planning as a student at Manitoba hydro Planning department.. all those hydro stations, and just maybe connect those very long lines using HVDC at something like 700,000 volts.

Also see

here is the line on a map.

?

So DC is not dead, but I doubt there is a 110 DC outlet in any North American house, but I’m ready for backlash and getting re-educated. ?

Oh sorry , I’m on double time now!

?

?

If the neutral side of the line is really neutral. The rule in the
old days, as detailed in most handbooks, was to put the plug in to get
minimum hum. Of course on DC the set would not work if the plug was in
the wrong way. Is there anyplace now with DC current? Was once common on
ships. Must be pretty rare. I think NYC still had some DC until fairly
recently due to elevators and other machinery requiring it.

On 7/31/2024 9:41 AM, don Root wrote:

Yea and now that the 1940s,? 50s, etc have past most people have
polarized outlets, so you now can polarize the plug properly, so you
don’t get a hot chassis.

--
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998 ??

--
don??? va3drl