# Where did 110 come from?

**URL:** <https://forum.nachi.org/t/where-did-110-come-from/90242>\
**Category:** General Inspection Discussion\
**Created:** [October 1, 2014, 2:07am UTC](https://forum.nachi.org/t/where-did-110-come-from/90242 "2014-10-01T02:07:01Z")\
**Posts on this page:** 4\
**Page:** 2

<div class="post-metadata">

**Author:** ![mlarson](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/mlarson/32/89225_2.png) [@mlarson](https://forum.nachi.org/u/mlarson)\
**Post date:** [October 1, 2014, 1:08pm UTC](https://forum.nachi.org/t/where-did-110-come-from/90242/21 "2014-10-01T13:08:42Z")

</div>

Don’t miss the videos.

[edisontechcenter.org/Folsom.htm](http://edisontechcenter.org/Folsom.htm)

---

<div class="post-metadata">

**Author:** ![kramm](https://avatars.discourse-cdn.com/v4/letter/k/96bed5/32.png) [@kramm](https://forum.nachi.org/u/kramm)\
**Post date:** [October 1, 2014, 1:18pm UTC](https://forum.nachi.org/t/where-did-110-come-from/90242/22 "2014-10-01T13:18:14Z")

</div>

Those are some great sites. Thanks Mike

---

<div class="post-metadata">

**Author:** ![rcooke](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/rcooke/32/57038_2.png) [@rcooke](https://forum.nachi.org/u/rcooke)\
**Post date:** [October 1, 2014, 1:30pm UTC](https://forum.nachi.org/t/where-did-110-come-from/90242/23 "2014-10-01T13:30:51Z")

</div>

> [@cbottger](#):
>
> Your just a pup to us old farts it was always 110 & 220;-)

I think I go back just a little further then Charlie.  
In my area Toronto southern Ontario when I started the trade November 1951.  
We had 25 cycle electricity ,WOW fluorescent lamps show showed cycle flicker then .  
We called the supply 110/220 single phase and 208/ 550 three phase .  
this was later called 120/240 and 208/600 volts .  
The only place is the auto plants that where 400 three phase later called 440 three phase is used , all industry her uses 208/600 volts .  
the change over from 25 cycle to 60 cycle was completed in about 1952 .  
I think all generators were sold to India I have no idea what their system is now

---

<div class="post-metadata">

**Author:** ![cbottger](https://sea2.discourse-cdn.com/internachi/user_avatar/forum.nachi.org/cbottger/32/206_2.png) [@cbottger](https://forum.nachi.org/u/cbottger)\
**Post date:** [October 1, 2014, 1:56pm UTC](https://forum.nachi.org/t/where-did-110-come-from/90242/24 "2014-10-01T13:56:11Z")

</div>

> [@sfetty](#):
>
> **Were they footers** back then Charley?:D:D

Yipper that too:D

[Previous page](https://forum.nachi.org/t/where-did-110-come-from/90242.md?page=1)