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FAQ

I need to cut a hole through 2(ish)cm of metal, or some sort of composite material I have at home to feed a few wires through. Is it possible to do it without any electrical equipment?

A pneumatic drill

I have a school project (Construction management) that involves the estimating of the electrical cost for a building addition. I can do the fixture counts, equipment hook ups, box counts, switches and etc. I cant figure out how much wiring would be involved. from the blueprints, is there a way to measure (estimate) the lf of wiring? this is a school building so there are mostly medsize room and hallways. any help would be great. I remember something about the homerun count from when i was a laborer, but could i figure 1 line around the room with a line for fixtures or something like that. doesnt have to be perfect by any means.

Figure out the load for each room. Remember the vacuum cleaner rule. Figure out where the source is (panel or sub). Then run each line (including upsdowns) to each outlets, add 2 feet at each outlet - add extra afterwards. Not sure with school codes for electrical, but say for kitchens, you need 2 sep circuits for the top, circ for fridge, circ for DW circ for GarDisp. etc. Each circuit starts a home run. You can probably find circuit requirements online somewhere. But If it really doesn't matter Put an outlet every 4 feet on the teacher wall. Use 2 circuits and stagger it. Use two more circuits and stagger them (vacuum) rule around the class room (maybe 2 for each wall). (New schools use WAY more power, elect smart boards, laptops, comps, etc). Just get the drawing, imagine what you'd want - draw the runs and add it up, otherwise use the plans. Just think, each circuit comes from the panel, over to the room, to the first outlet, then the next, (dont Y or branch out), and then the last circuit. It's clean, simple and easy. Wires comes easily purchasable in the following lengths from your favt box store. 50,100,250,1000

If I decide to choose electrical engineering as my college major what would I be doing on a regular basis for my job?

Shelly answered pretty well but there's sooooo many fields you can go into, ESPECIALLY if you get an education in Mechanical Engineering too. I'm going into Electrical Engineering at ECE Illinois, possibly the best school ever created. My (dream) career is working at the Department of Defense for the advancement of science and technology, hopefully more based towards making everyday life easier, alternative energy, and warfare. There are A LOT of careers you can get out of it, like shelly showed, but more. yeah, you just got excited didn't you?

1. what is electrical and wiring system?2. what are the factors to be considered in designing an electrical wiring system in buildings?3. what are the possible ways of saving energy when designing an electrical and wiring system in buildings?i just need the experts opinion about this.thanks!

A building electrical system includes all of the equipment and wiring designed by the electrical engineer. This begins at the utility power connection and includes the service entrance equipment (meter base, current transformer cabinet and main disconnect switch), a main distribution panel (main breaker panel or main switchboard), and branch circuit distribution panels. The electrical system includes all wiring from the connection to utility power to connections to all electrical utilization of equipment. The electrical system also includes building lighting and lighting controls, building premise wiring for computers, computer hub room equipment, security systems, public address/broadcast system, keyless entry system, fire alarm system, and standby and emergency power systems. The main factors to consider is square footage of building, type of occupancy, number of occupants, and applicable local codes, the number of floors in the building, location of exits and stairwells. These considerations are used especially in determining what voltage with which to serve the building and size (ampacity) of service entrance and main distribution panel. These statistics are also important in the design of the fire alarm system. The main ways to save energy is through use of occupancy sensors and daylighting controls for lighting (the latter assumes windows or skylights for introducing daylight). These controls will keep the lights off unless specific areas are occupied, and lighting along with HVAC are the largest electrical loads. Energy costs (both electricity and heating fuel) can often be significantly reduced by incorporating CO2 sensors and variable frequency drives to control air handlers (large fans) rather then running them continuously at a rate to support maximum building occupancy, as is the case in many buildings.

i want to know about latest technical electrical machine used in ship's during sailing.Eigther it may be electricity generator or any other equipment.

the newest state of the rt electrical systems on large ships are 'podded propulsion; instead of turbines turning propellor shafts, generators supply electricity to motors that are placed in pods outside the ship, under the hull which turn the propellors.go look up 'Queen Mary 2' on the web for details.

I have been doing some research in which stocks i would like to invest in. Well i found this company called Raser Technologies. Supposedly they are a geothermal electrical power plant company. With Obama's environmental laws that he is passing, will this cause this stock to increase? i dont know a whole lot about stocks or about this company but if they step up as a major alternative energy companies then they should bring in a lot of profit seeing as their stocks are now only at2.27 a share. any information about this company or predictions for the future of other alternative energy companies would be greatly appreciated. I really think that with all the searching of alternative energy sources, this would be a great investment for the future when these companies step up.

Wow, okorder

Greetings, I've noticed that my electrical power company is constantly sending me a reports on how much electricity I am using with respect to my neighbors, kind of trying to get me to use less energy. I figured that if a company is in the business of selling something, it might as well encourage you to use more than you really need.Why is my utility encouraging me to use less electricity? Is it because they feel there's going to be a backlash against the industry once the word gets out that utilities are big drivers of global warming, and they are trying to do damage control ahead of time.Remember, we live in a capitalistic society where maximizing profit is key to keeping investors happy. I can understand the water company asking me to consume less water, as water is a scarce resource. Coalwe have lots and lots of it. Enough to burn for a few hundred years.

Correct, revenue - expenses profit Building more plants or buying from other utilities is an expense. So, pretend that you are the electric company. Let's call it Jose Electric Company, JEC. So, JEC has to provide electricity to 5 million customers. They use about 1,000 kilowatt hours each per month. That comes up to 5,000,000 customers times 1,000 kw 5 billion kw-hours. If you could get them to cut usage then you would not have to build more power plants. Power plants used to be expensive, now they are very expensive. Your friend, the govt, does not want you to build plants that use coal. They are not keen on other fossil fuels. This year they like solar and portable nuclear plants. Yes, portable nuke plants. Till the political and regulatory environment gets a little more stable, it is easier to cut demand rather than build more production. On the other hand. Notice that within the last couple of weeks that 2 new nuke plants announced their start of new reactors. Looks like 1 was in South Carolina and 1 was in Georgia. It would seem that they have foresight, experience, skills, management and money to make sure supply is there for the demand. We also have enough natural gas to burn in jet driven turbines, many years. Water scarce? Where did the water go? Did it leave the planet? Water problems are logistics and not really shortages, are they?

Ever tried it on a LG Vu? Also Is that liquid spray safe?Which one is better invisbleshield or BodyGuardz?

Yes the liquid is completely harmless to nearly all electrical equipment. Invisible shield is the only one I have tried. I applied it to an iPod about a year ago and immediately regretted it as the scroll wheel became really hard to use. My advice is keep the product free of permanent protection and buy a slim-line case