New Electrical Work

You need to address this from the prospective of current draw per light. The length is not really the issue. Your continuous current should not exceed 80% of 20 amps, or 16 amps. Now if you were using certain halogen bulbs the current for each might be 1/2 amp each so you could have 32 such bulbs. Do a sample layout in what is called a reflected ceiling plan (Imagine the ceiling plan on the floor) and see how many lights of what current you plan to use and break up your circuit as needed.

from the more positive point to the less positive point in the circuit

A 120 V outlet is the standard residential and commercial electrical outlet for North America. When additional electrical power is needed, other outlet options are available, but typically, one or more duplex (meaning double, or two outlets) receptacle is installed in every residential and commercial room.

BWG = Birmingham Wire Gauge, is an old British wire measurement system that was widely used through out the world at one time.

absolutely not...

Besides the fact that "absolutely not" is the common sense answer, the NEC strictly forbids electrical panels from being in bathrooms. There are very few other restrictions, including the fact that there is no restriction on how close to water a panel can be. But the restriction on panels in bathrooms stands tall.

4 AWG is the initial answer without considering the length. For 210 feet of 4 AWG the resistance is .052 ohms. So using Ohm's Law the voltage drop would be 60 x .052 = 10.92 volts. Usually the drop should be less than 10 % of the supply voltage. So if the supply was 120 volts you would be allowed 12 volts and for 240 volts 24 volts of a drop.

So you be okay for using either 120 or 240 volts and 4 AWG wold support the current and the length. There may be other factors in your application, but from what you specified use 4 AWG.

Depends on length. The more length, the more resistance.

If the service stack is supported by a support structure and the utility feed drop is not supported from the conduit, the size of the conduit can be 1 1/4". If the service stack is used to support the utility feed drop then the conduit has to be 2" schedule 40 conduit. The reasoning behind this is that if in a storm a tree limb falls across the service drop, the lighter weight conduit could bend and pinch the wires in the stack and short out. This would be ahead of the main service breaker and the only protection for the wire would be the primary fuse at the transformer. Theoretically this amperage could rise to 50000 amps before the primary fuse blows. A schedule 40 service stack if supported, as the code requires, will withstand most tree falls. What is most likely to happen is that the utility connectors will pull apart leaving the service stack intact.

One HP is equal to 746 watts. Therefore 2.5 HP equals 2.5 x 746 = 1865 watts.

The name plate, which is a metal plate on the back of the appliance with a lot of technical information on it, may tell you straight up what size the circuit needs to be. If it doesn't it will most certainly give you the wattage of the freezer. For single phase systems such as in a home, take that number, divide by the voltage, which gives you amps, and choose the next size larger breaker and corresponding wire size.

Loaded question, what is the voltage, run length, aluminum or copper feeders, expected constant load? Definitely bigger than 4/0

The electrical code states that circuit conductors that are fed by this breaker on a continuous load can only be loaded to 80%. Therefore you can have a load of 1,920 watts on this circuit. Assuming you install 8 watt bulbs you can have 240 on this circuit.

The first is taking power to a garden shed or other outbuilding, and the second is installing an outdoor socket outlet for your garden power tools.

Wall receptacles are wired in parallel. black to black, white to white, ground to ground.

Electricity from a power company includes the following costs:

1. Installation charges for connection and integrity testing.

Business fees are higher than residential fees (for more complex needs).

2. Residential kilowatt-hour rates have averaged $0.10 across the USA since 1990.

A 100-watt lamp running for 10 hours will cost $0.10. However, recent energy costs are likely to raise that average to $0.15 by 2010.

3. Maintenance costs which involve negligence or sabotage by electric customers can be charged in part or in full to the customers.

Contact your power company for the complete list of scheduled fees and special charges.

Amps vary depending on mode of use. Usually 19 Volt batteries usually have a 2 ampere hour capacity. If you fully charged the battery and connected it to drill and started a timer when you turned it on at full power; you could measure the time to fully discharge. If it ran for 1 hour you would be pulling two amps. On the other hand if you shorted out the battery it would draw many more amps and die quite quickly.

a current

It depends on the application, but for Single-Phase dwelling service and feeders

3 AWG copper is good for 110 amps. That really equates to 100 amps since you can't get a 110 amp circuit breaker.

Depending upon what type of "unit", you would want at least an 85-amp breaker, and the next standard size would be 90 amps. You might use an 80, depending upon the duty cycle of the unit, but the 90 will be required for constant use.

A 15 amp dedicated circuit breaker should be used for the dishwasher. The disposal can be wired to the general kitchen 15 amp circuit.

That depends on the wire's insulation and the temperature rating of the devices you're connecting it to. This type of question usually means you aren't ready to do this yourself. Study some electrical material and the National Electrical Code and work this answer out for yourself, or call a professional electrician. If I were to give you an answer, you might attempt to do something you shouldn't be doing, and that may cost someone a shock, a home fire, or their life. At least see the applicable Article in the NEC, 310.16.

Usually the screws are 6-32 oval head. Length 1/2 inch.