Here are a couple of entries which caught my eye. The guy answering this first question is rather misinformed:
Why does the US run at 110 volts when most of world runs at 220+ volts?
In terms of power production - all power is the same. It is then transmitted over High Voltage cables - usually above 10K Volts.
The power is then stepped down before it reaches our homes.
U.S, Japanese and some other countries receive 110V in the form of 2 wires - 1 Live and 1 Neutral
(2 phase system)
Other countries receive 2 live and in some cases 2 live in addition to 1 neutral to create this 220-240V.
Historically many countries originally used the 110V or 2 phase system.
Some may argue that the US is behind or has just managed to stay afloat with this old system longer.
The only advantage to receveing 110V is less injury to the nervous system in case of electric shock.
The downside is due to more current to compensate for the power you are more likely to get more burn (Yes skin burning) due to the 110V.
The disadvantage of 110V as compared to 220V is more losses due to resistence. Higher current needed to compensate for lower voltage creates more heat and therefore more resistence in the system and thus the need for more power.
Here's a reasonable enough homeowner question I suppose, but you might have a hard time even understanding the reply!
I have an old house with mostly 2-prong (ungrounded?) outlets. I have computer equipment, including a UPS, that requires 3-prong, grounded outlets.
Should I just use adapters, or should I call an electrician and get new outlets?
The electricity in the home comes in on a 200-amp circuit breaker.
Older home half updated wire other half older wire it was gone through by eletric guy old wire in armored flex tube metal updated 200amp box eveything upgraded butt ? no ground in two wire small current going through when you touch wire and box not when you touch it free standing the box if you need to connect ground you cant small low current bleeding in box and tube what to do all old wire protect with armored metal flex tube thank you have a blessed day kevin
Huh???
[This message has been edited by pauluk (edited 09-20-2004).]