Top Document: Electrical Wiring FAQ (Part 2 of 2) Previous Document: Noisy fluorescent fixtures, what do I do? Next Document: Is it better to run motors at 110 or 220? See reader questions & answers on this topic! - Help others by sharing your knowledge Three phase power has three "hot" wires, 120 degrees out of phase with each other. These are usually used for large motors because it is more "efficient", provides a bit more starting torque, and because the motors are simpler and hence cheaper. You're most likely to encounter a 3 phase circuit that shows 110 volts between any hot and ground, and 208 volts between any two hots. The latter shows the difference between a normal 220V/110V common neutral circuit, which is 240 volts between the two hots. There are 3 phase circuits with different voltages. Bringing in a 3 phase feed to your house is usually ridiculously expensive, or impossible. If the equipment you want to run has a standard motor mount, it is *MUCH* cheaper to buy a new 110V or 220V motor for it. In some cases it is possible to run 3 phase equipment on ordinary power if you have a "capacitor start" unit, or use a larger motor as a (auto-)generator. These are tricky, but are a good solution if the motor is non-standard size, or too expensive or too big to replace. The Taunton Press book ``The Small Shop'' has an article on how to do this if you must. Note that you lose any possible electrical efficiency by using such a converter. The laws of thermodynamics guarantee that. User Contributions:Comment about this article, ask questions, or add new information about this topic:Top Document: Electrical Wiring FAQ (Part 2 of 2) Previous Document: Noisy fluorescent fixtures, what do I do? Next Document: Is it better to run motors at 110 or 220? Part1 - Part2 - Single Page [ Usenet FAQs | Web FAQs | Documents | RFC Index ] Send corrections/additions to the FAQ Maintainer: clewis@ferret.ocunix.on.ca (Chris Lewis)
Last Update March 27 2014 @ 02:11 PM
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I bought a new receptacle and installed the same. I still have no power I suspect there could be a bigger problem,this is aluminum wiring.
I've killed the breaker and call an electrician but am curious as to what happened.P.s. there is a dimmer switch on the same circuit.
I have multiple switches to lights. Ran 12/2 and 14/3 into switch box and inspector wrote correction needed.
What should I have done instead?
thank you
dennis
Ex: 15 amp-14awg. 12awg-20amp only rule for thumb other factors such as continuous load,heating and others if you do not know the safe NEC rules then please call a qualified journeyman Electrician better be safe