Electrical Wiring

Low Voltage three Phase Single Speed Three Phase Wye L1:T1,T7 L2:T2,T8 L3:T3,T9 Join Wires T4,T5,T6 Three phase Delta L1: T1,T6,T7 L2:T2,T4,T8 L3:T3,T5,T9 High Voltage L1:T1 L2:T2 L3:T3 Join T4and T7, T5 and T8, T6 and T9

Usually when the power utility disconnects your electricity, they remove the electric meter. Without the meter, there is little chance (if any) of gaining any "free" electricity.

They could also disconnect the "grid" to your residence at one of those outdoor sealed and locked enclosures.

Sometimes, they may put a lock on your switch box and accompany that with their "seal" that if removed, it will be rather obvious.

And if you get caught, you are going to be prosecuted for theft.

In one way that is like asking why clothes or garden tools, buildings, musical instruments, cars, trucks, planes, ships, etc. have different shapes and sizes... The reason is because the diverse uses to which they are applied require them to be made in different shapes and sizes.

But it is not only as simple as that: some electrical items can become very dangerous indeed - to people, animals, vehicles, buildings, etc - if they are hooked-up to their electrical supplies incorrectly. Some electrical items can catch on fire or explode if they are connected to the wrong voltage or the wrong type of electrical supply. It makes no difference if some wrong connections were not done deliberately but "just by accident", the end result would be the same: disaster.

So the idea of using different shapes and sizes of connectors to help people avoid making bad hook-ups and having accidents was invented by the same brilliant engineers who discovered how to make batteries, generators, light bulbs, electric motors, computers and all the other wonderful electrical things many of us now take for granted in our everyday lives.

By inventing different shapes and sizes of connectors an excellent and yet very simple way was found for us all - even if we know nothing about electricity - to make the right connections easily "first time". That same clever invention makes it much more difficult for us to make any dangerous bad hook-ups "just by accident" because the plugs or connectors for a particular appliance or electrical device will only fit into the correctly-matching sockets or connectors which are intended for use with that particular item, and won't fit into any sockets or connectors which do not match.

A further very real benefit of having many different shapes and sizes - and colors - of connectors, plugs and sockets is that, for any given electrical appliance or system of components - such as the many different connections that are needed inside a house - for phones, television aerials, cable services, computers and their peripherals (keyboard, mouse, monitor, printer, scanner, modem, speakers), small electrical appliances, large electrical appliances, etc. - it is very easy for anyone to see exactly which wire or cable needs to go into which outlet without always having to study a User Guide first. When there are different shapes and sizes of connectors you don't even have to be trained how to use complicated electrical wiring diagrams and test equipment.

I believe it has to do with the windings in the motor. When wired to 120V, half the motor has a positive polarity and the other half has a negative polarity. Then as the current alternates (60 hertz AC) the polarity flips, the magnetic poles oppose each other and cause the motor to spin. I think in a 240v winding the motor is in quadrants instead of halves. So it would be like have 4 magnets opposing each other instead of two and you have double the voltage. The calculation for electrical power (which is converted to torque) is voltage-squared divided by the resistance. If the voltage is doubled, the power is increase by 2-squared, or quadrupled. In reality, the torque produced will be slightly less than 4 times more (because some of the power is lost as heat), but it should be pretty close. -- The second answer is the best answer. The first answer could suggest several things, depending on how you read it. Nonetheless, they are all incorrect. The power calculation (in Watts) is really all you need to do. Voltage squared, divided by resistance. Resistance stays the same, so power quadruples when voltage doubles. If the motor spins at the same speed, then torque should effectively be linear with power, aside from the extra heat created in the components from the higher current.

No, even though these are parallel circuits, the voltage drop across each device is not the same in house hold circuits, or anywhere, for that matter. Different devices pull different currents. A toaster, for instance, pulls many times what a light bulb pulls. Since wires do not have truly zero resistance, those differing currents result in different voltage drops across the wires that lead to the devices. That small voltage drop in the wires results in a different voltage drop across each device, even though the device/wire is connected to the same voltage source.

Yes unless its a powered subwoofer

Match the RMS power of the amp to the sub(s). Ignore so called 'peak' and 'max' power, called fuzzy wats and just plain hype by tuners and tweakers alike. Some manufacturers also use the term 'constant' power. By keeping everything balanced you keep the components stress level down for longer life and save money. Buying a 1000 wat amp for 150 wat subs is a waste of money.

It is a contact block with three poles. Pole one is normally open, pole two is normally closed and pole three is normally open. These reading are taken in a de-energized condition. When energized the contacts will change status to closed, open and closed.

as in a surge of energy or power or short bursts of speed or energy.

Most technical people believe that AC electricity is not polarized this is an incorrect assumption. Since AC power is just a potential difference between some reference (ground) and a signal it stands to reason reversing the Neutral and the "Hot" should reverse the polarity.

Direct on line starter and Heavy direct on line starter...... in HDOL CT is fixed.

As the clothes dry, water is evaporated. This evaporation lowers the temperature of the air flowing out the dryer vent. Once most of the water is evaporated, the cooling effect is gone, and the temperature of the vent air rises. The dryer has a temperature sensor in the vent outlet that senses the temperature rise and shuts off a few minutes later. I wondered this myself after I got a new dryer with the auto dry feature and so researched the subject a few months ago. Inquiring minds want to know!

Transistors, relays, and triacs.

You could but this is not a very practicable way to run an air pump. There will have to be a large amount of batteries in series and parallel connections to add up to the amp hour capacity to run the air pump. Just use an old 12 volt car battery for your project.

No. There has to be a difference of voltage. You are still alive I see. Are you asking for more volunteers?

series

The 'input' side of a transformer is called its 'primary' side, whereas the 'output' side is termed its 'secondary' side. The ratio of its secondary to primary voltage is equal to the ratio of the number of turns in the secondary windings to the number of turns in the primary winding. So if, for example, a transformer's secondary winding has twice as many turns as its primary winding, then the secondary winding will produce twice the voltage applied to the primary winding.

All professional electrical work should be done by a licensed electrician due to risk of fire. The methods and procedures of electrical wiring is a part of training and testing that a professional is required to complete.

Any extension cord that has the capacity to carry the amperage that the TV draws. Any extension cord that the hardware store sell will be sufficient to do the job.

None. Power factor improvement has no effect whatsoever in saving energy.

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What it can save you is money. A utility company will charge an additional cost on your regular bill for having a low power factor reading less than .92 depending on the type of service. It is billed as a surcharge to the addition cost of the bill. On three phase services this correction can be done by adding capacitance to bring the power factor up to .92.

Choke coils have a piece of wire wrapped around an iron core and their purpose is to allow a low frequency (typically 60 Hz) to pass, while blocking higher frequencies. Choke coils provide electronic circuits with protection from fast events (like a lightning or similar discharge on the power wires) by acting as a shunt to events whose frequencies are above the intended range.

its vary between 0 t0 1 only .....pf =0.8