Need some help, what is percentage US voltages on 115V, 208V WYE, 240V?

Go with 120V single phase. Residential power here is mostly 2-phase, so that you can have an electric stove or clothes dryer working on 240V. Getting 208V requires a 3-phase service, which is common in commercial installations but not elsewhere.

Round here, requiring three-phase power for a 75 W pump would get you a bit of a reputation. ;)

Cheers

Phil Hobbs

As Phil says, go for the 115V version. Actually, most of us get about 120 to 125V on our ac outlets. Most of them have 15A breakers. Only a few in my house are 20A. Although we have 230V (140 to 250V) in the house, it's all tied up in dedicated electrician wiring, e.g., to oven, HVAC, hot water, drier. That's why our cordless kettles are 1.5kW, rather than 3kW like the rest of you. My 8.5kW solar roof is 230V, has 34 250W microinverters.

Interesting, newer flats in Poland are customarily equipped with 3 phase

Best regards, Piotr

That covers not only 99% of residential, but also most commercial, industrial, etc, which would have it available too. Exceptions would be something like a pump shack, where you might only have 240V or

Oh boy, has that lead to a lot of arguments. I agree with you, that it in fact is two phases, one 180 out of phase with the other. But in the trade it's called split-phase and most electrician types will argue all day that it's not two phase, that two phase was 90 deg, etc, etc, etc. It's called split-phase because it originates from one of the three primary distribution phases. But once split, you do have two phases that are

Voltage in just about all of the US has been spec'd at 120V/240V not 115V/230V for half a century or more.

Actually, most

Whoey Louie wrote in news: snipped-for-privacy@googlegroups.com:

Pump shacks have standard wall outlets as well. They don't just wire up the pumps and work in a dark room.

And what's the allowed range? In Poland it is 230V +6%/-10%, in the EU I think 230V +/- 10%.

Best regards, Piotr

Where would people buy gadgets that run off 400?

Residential/Commercial/industrial sites always have 120 available, usually close to actual 120 volts. The 3-phase connections are various. 120 3-phase wye is 208 l-l, and the 120/240 "stinger" single-phase version is 240 l-l, with neutral being the ct of one l-l pair.

Not really, however the 400V equipment uses much more robust plugs/outlets or is directly wired, without the plug.

If it looks big and heavy, that's because it is.

Actually, there are many of them. Stoves and furnaces, water heaters, agricultural equipment. Some of them are truly 3-phase, some of them are 3 independent 1-phase units in a single enclosure, designed that way in order not to overload the sinlge phase wiring.

Best regards, Piotr

torsdag den 31. oktober 2019 kl. 15.47.57 UTC+1 skrev snipped-for-privacy@highlandsniptechnology.com:

water heaters, AC, welders, bigger stationary power tools

On Thursday, October 31, 2019 at 4:33:20 AM UTC-4, snipped-for-privacy@gmail.com wro te:

ains voltage

ase), and 240V (120V, 180 degrees phase inverted)

A large percentage of commercial installations are 208 volts rather than 24

1. I charge my car at level 2 chargers in lots of locations and some 90% o f them are 208 volts (give or take) rather than 240. Instead of getting 7 kW charging rate, I usually see 6 or below because of the voltage.

I know I have seen some chargers at 240 volts, but I can't remember a singl e one.

On Thursday, October 31, 2019 at 4:33:20 AM UTC-4, snipped-for-privacy@gmail.com wro te:

ains voltage

ase), and 240V (120V, 180 degrees phase inverted)

BTW, not sure what you think is going on with the voltages when you call it "115V grid". The power to residences is 240 volts, split phase meaning ne utral is grounded with each of the two "hot" wires of opposite polarity at

To me "grid" refers to the high voltage power lines.

How do you get 240 volts to run appliances? Or do they make yet another voltage capable set of devices?

Do residential water heaters actually run on three phase? That would require three heating elements rather than one. Or do they actually make a three phase heating element?

You simply wire the neutral and any phase you like to the outlet. In older blocks of flats they used to route the phases in a round-robin fashion to different flats in hope of balancing the 3-phase 15kV/380V transformer. Now they don't seem to care.

Technically yes, but this is the default set of plugs/outlets. The 400V case is considered special and often there is no single outlet

-- the devices use fixed, direct wiring to the cable embedded in the wall. These outlets are usually external to allow bigger devices located in the backyard to be connected. This is mostly in rural areas.

Best regards, Piotr

Some do, some don't. You can buy anything you like. I think there are 3 internal heaters inside, that is the star connection of heating elements. That way you can have a universal 230V heating element, good for either application. Best regards, Piotr

So the current is very limited on this 400 volt power? With US heaters the y get some 4500 to 5500 watts from a 240 volt line. We commonly use up to