Go Back  British Expats > Living & Moving Abroad > USA > The Trailer Park
Reload this Page >

Video for nerds: does the US have a 120V or a 240v power grid?

Video for nerds: does the US have a 120V or a 240v power grid?

Old Jan 7th 2021, 1:18 pm
  #1  
I approved this message
Thread Starter
 
Joined: Dec 2004
Location: Chicago
Posts: 2,364
Hiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond repute
Default Video for nerds: does the US have a 120V or a 240v power grid?

I see lots of questions here about the US's ~120v service vs. the UK's ~230v service. This video describes the US's split-phase 240v/120v system and explains how it differs from the system in the UK. The video also has a nice explanation of how a US fusebox works, which is helpful knowledge for anyone who owns a home.

Hiro11 is offline  
Old Jan 7th 2021, 4:54 pm
  #2  
BE Forum Addict
 
tom169's Avatar
 
Joined: Mar 2015
Location: NC, USA (ex Yorkshire)
Posts: 4,222
tom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond repute
Default Re: Video for nerds: does the US have a 120V or a 240v power grid?

There was once construction happening on the street and they managed to knock out a single phase only. Was weird to initially diagnose when half of my house stopped working. The oven, being on both phases, was actually trying to back-feed the power, and so things would sometimes pop on in a weird state.

My biggest concern at the time was we had freezing weather in NC. My pool had a layer of ice and I was using the 240 pump to circulate the pipes to stop them freezing.

Power company had it fixed a few hours later.
tom169 is offline  
Old Jan 9th 2021, 4:19 pm
  #3  
BE Forum Addict
 
Boomhauer's Avatar
 
Joined: Dec 2009
Posts: 4,508
Boomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond repute
Default Re: Video for nerds: does the US have a 120V or a 240v power grid?

I wish I had 3 phase power at home, have lots of stuff that requires 3 phase. I can get a phase converter, but it would be soo much more convenient to have 3 phase from utility service.
Boomhauer is offline  
Old Jan 9th 2021, 4:31 pm
  #4  
Concierge
 
Rete's Avatar
 
Joined: Apr 2001
Posts: 44,704
Rete has a reputation beyond reputeRete has a reputation beyond reputeRete has a reputation beyond reputeRete has a reputation beyond reputeRete has a reputation beyond reputeRete has a reputation beyond reputeRete has a reputation beyond reputeRete has a reputation beyond reputeRete has a reputation beyond reputeRete has a reputation beyond reputeRete has a reputation beyond repute
Default Re: Video for nerds: does the US have a 120V or a 240v power grid?

Originally Posted by tom169 View Post
There was once construction happening on the street and they managed to knock out a single phase only. Was weird to initially diagnose when half of my house stopped working. The oven, being on both phases, was actually trying to back-feed the power, and so things would sometimes pop on in a weird state.

My biggest concern at the time was we had freezing weather in NC. My pool had a layer of ice and I was using the 240 pump to circulate the pipes to stop them freezing.

Power company had it fixed a few hours later.
You don't have to winterize your in-ground pool in the winter in NC?
Rete is offline  
Old Jan 12th 2021, 11:33 pm
  #5  
BE Forum Addict
 
tom169's Avatar
 
Joined: Mar 2015
Location: NC, USA (ex Yorkshire)
Posts: 4,222
tom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond reputetom169 has a reputation beyond repute
Default Re: Video for nerds: does the US have a 120V or a 240v power grid?

Originally Posted by Rete View Post
You don't have to winterize your in-ground pool in the winter in NC?
Nope, I keep it blue and running all year long. The timer has a thermostat which kicks in if we have a cold snap.
tom169 is offline  
Old Jan 13th 2021, 8:48 pm
  #6  
Lost in BE Cyberspace
 
Boiler's Avatar
 
Joined: Mar 2004
Location: Colorado
Posts: 34,516
Boiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond repute
Default Re: Video for nerds: does the US have a 120V or a 240v power grid?

Originally Posted by Boomhauer View Post
I wish I had 3 phase power at home, have lots of stuff that requires 3 phase. I can get a phase converter, but it would be soo much more convenient to have 3 phase from utility service.
It is possible when I upgrade my system it was on offer, however only made sense if I was looking to heat with electricity. I remember there was a monthly charge but not what it was.
Boiler is offline  
Old Jan 14th 2021, 2:48 pm
  #7  
BE Forum Addict
 
Boomhauer's Avatar
 
Joined: Dec 2009
Posts: 4,508
Boomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond reputeBoomhauer has a reputation beyond repute
Default Re: Video for nerds: does the US have a 120V or a 240v power grid?

Originally Posted by Boiler View Post
It is possible when I upgrade my system it was on offer, however only made sense if I was looking to heat with electricity. I remember there was a monthly charge but not what it was.
Do you live in a area zoned commerical or mixed commercial/residential ? I have never heard of a residential neighbourhood having 3 phase.
Boomhauer is offline  
Old Jan 14th 2021, 3:00 pm
  #8  
Lost in BE Cyberspace
 
Boiler's Avatar
 
Joined: Mar 2004
Location: Colorado
Posts: 34,516
Boiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond reputeBoiler has a reputation beyond repute
Default Re: Video for nerds: does the US have a 120V or a 240v power grid?

It is complicated but do not remember being asked about zoning. I have 2 types of zoning, I would think Mixed Use iis the most common for buildings around here. I am not sure there is much Residential in my County.

I am supplied by a REA.

They are improving the infrastructure, our sub station could supply a small town and has room for expansion. If there is a major switch to Electrical vehicles I can see massive demand increase.

I have a 400 Amp supply but that is pretty unusual.
Boiler is offline  
Old Jan 16th 2021, 11:35 pm
  #9  
BE Forum Addict
 
steveq's Avatar
 
Joined: Feb 2013
Location: State College Pa.
Posts: 1,561
steveq has a reputation beyond reputesteveq has a reputation beyond reputesteveq has a reputation beyond reputesteveq has a reputation beyond reputesteveq has a reputation beyond reputesteveq has a reputation beyond reputesteveq has a reputation beyond reputesteveq has a reputation beyond reputesteveq has a reputation beyond reputesteveq has a reputation beyond reputesteveq has a reputation beyond repute
Default Re: Video for nerds: does the US have a 120V or a 240v power grid?

Originally Posted by Boomhauer View Post
I wish I had 3 phase power at home, have lots of stuff that requires 3 phase. I can get a phase converter, but it would be soo much more convenient to have 3 phase from utility service.
The single-to-three phase inverters are so inexpensive and versatile, I wouldn't bother.
steveq is offline  
Old Jan 17th 2021, 1:35 pm
  #10  
I approved this message
Thread Starter
 
Joined: Dec 2004
Location: Chicago
Posts: 2,364
Hiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond reputeHiro11 has a reputation beyond repute
Default Re: Video for nerds: does the US have a 120V or a 240v power grid?

The fact that I somehow typed "fusebox" in the original post bothers me to this day. I can't edit the post and fix it. The term I was looking for is "service panel". #wordsmatter
Hiro11 is offline  
Old Jan 25th 2021, 7:04 am
  #11  
BE Forum Addict
 
Joined: Mar 2008
Location: Santa Cruz, CA
Posts: 4,904
md95065 has a reputation beyond reputemd95065 has a reputation beyond reputemd95065 has a reputation beyond reputemd95065 has a reputation beyond reputemd95065 has a reputation beyond reputemd95065 has a reputation beyond reputemd95065 has a reputation beyond reputemd95065 has a reputation beyond reputemd95065 has a reputation beyond reputemd95065 has a reputation beyond reputemd95065 has a reputation beyond repute
Default Re: Video for nerds: does the US have a 120V or a 240v power grid?

Originally Posted by Hiro11 View Post
The fact that I somehow typed "fusebox" in the original post bothers me to this day. I can't edit the post and fix it. The term I was looking for is "service panel". #wordsmatter
Don't worry - anyone reading this who has sufficient knowledge to understand it will understand exactly what you meant.
md95065 is offline  
Old Jan 25th 2021, 6:17 pm
  #12  
BE Forum Addict
 
Joined: Dec 2005
Location: Auburn, Alabama
Posts: 1,123
neill has a reputation beyond reputeneill has a reputation beyond reputeneill has a reputation beyond reputeneill has a reputation beyond reputeneill has a reputation beyond reputeneill has a reputation beyond reputeneill has a reputation beyond reputeneill has a reputation beyond reputeneill has a reputation beyond reputeneill has a reputation beyond reputeneill has a reputation beyond repute
Default Re: Video for nerds: does the US have a 120V or a 240v power grid?

The US 240V split phase gives me the opportunity to switch out 120V circuits for 240V circuits by simply switching out a breaker (if there's panel space for a double), replacing receptacles and marking wire appropriately. I have really grown to like it.
neill is offline  

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.