this post was submitted on 30 Jun 2024
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In the US for example the standard is 110V for voltage and 80psi for water. In Europe, voltage is 220V, is water pressure different there too?

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[–] Magister@lemmy.world 1 points 5 months ago (2 children)
[–] elmicha@feddit.org 4 points 5 months ago (1 children)
[–] Contravariant@lemmy.world 3 points 5 months ago

What genius decided to denote the difference by using three shades of the exact same colour?

[–] CorrodedCranium@leminal.space 3 points 5 months ago (2 children)

Is that substantial though or is it like calling 120V something like 110V/115V?

[–] Zwiebel@feddit.org 2 points 5 months ago

It doesn't matter one bit. The actual voltage from the wall varies, and devices are build to operate under a fairly wide margin.

[–] Kaboom@reddthat.com -2 points 5 months ago (2 children)

Hes just being pedantic. Reality is US houses get a +120v and a -120v supply. Combine them is how you get 240v.

[–] ramble81@lemm.ee 3 points 5 months ago

There’s lots of pedantry going on in this thread rather than attempting to understand the spirit of the question.

[–] ElongatedMuskrat@lemm.ee 2 points 5 months ago* (last edited 5 months ago) (1 children)

sorry dude thats not right. first off houses recieve AC power which cycles between positive and negative at 60hz ~120v rms in north america. they achieve a potential difference in voltage by basically taking a phase of power, splitting it into two lines and then lagging one line by 90° usually with the use of capacitance from what i was taught back in the day(Good ol ELI the ICEman). this phase shift now gives you a potential difference between those two lines of 240v and 120v between phase and ground. need to use phasor algebra with AC power. when dealing with 3 phase power you still wouldnt just add 120v plus 120v when going phase to phase, you would multiply 120v by the square root of 3 which gives you 208v.

[–] Kaboom@reddthat.com -1 points 5 months ago (1 children)
[–] ElongatedMuskrat@lemm.ee 1 points 5 months ago

oop, not my intention but youre right