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Frequently Asked Questions

Are lower voltage power lines (say 115 kV) safer than high voltage (345kV and above) lines?

a. The risks associated with electric fields directly correspond to a line's voltage. Therefore, the risks associated with electric fields increase in tandem with the line's voltage. b. The better documented risks associated with a line's magnetic field are associated with the current going through a line rather than its voltage. To deliver a given amount of power, utilities must push more current thorough low voltage lines than high voltage lines.
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Is this work relevant to all power lines or just the high voltage ones controlled by National Grid?

National Grid: Frequently Asked Questions
These guidelines relate primarily to existing 400kV and 275kV transmission lines ??" the transmission system operated by National Grid which connects the electricity generators??? power stations with the local networks of the electricity distribution companies. These are the pylons and lines that probably impact the most on the landscape and on public space, and that usually cannot be removed or re-routed.
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How do I discharge the High Voltage?

Apple II Csa2 FAQs: 1Main-Start, Part 1/25 - Apple
The HV charge (20,000+ volts) might not be much reduced by just waiting a few hours (or days), especially if you are in a low humidity location and the tube, etc., are of good quality. You can, probably, _reduce_ the shock hazard by discharging the High Voltage at the anode. You can not, really, expect to eliminate the shock hazard. (See WARNING below.) Step 4 may result in a somewhat loud "SNAP" as the tube is discharged. Be prepared so you don't jump and break something.
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What is the voltage of the power lines that Great River Energy owns?

GRE Frequently Asked Questions
Great River Energy lines are generally larger than 33,000 volts (33kV). The power transmitted through these lines does not service residential or commercial properties. Great River Energy is the wholesale power supplier to your local electric cooperative. Your local electric cooperative delivers the electricity to your home or business.
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Why don't birds get shocked when they sit on high voltage lines?

Where "Why?" turns to "Wow!" - Homework Help - Kids Learning...
When they are only in contact with one power line, they are not forming a complete circuit, so the elec....
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How many miles of high-voltage lines are in ColumbiaGrid's current footprint?

ColumbiaGrid. Frequently Asked Questions FAQs
There are about 22,000 miles of high-voltage transmission lines in the combined networks of the participants.
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What are transmission power lines?

a. They are those high voltage lines that carry power from power plants to substations or between substations. Generally, they carry voltage greater than 35 to 65 kV (kilovolts). Lines that carry power from substations to the ultimate users are called distribution lines. They generally use voltages under 35 kV. Transmission power lines radiate magnetic and electric fields that pulse sixty times per second. This is called extra-low frequency EMF (ELF-EMF).
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I want to convert my Voltage Constant (Kv) of V/rad/s to V/Krpm, how do I do that?

Electromate Industrial Sales
Most motors are rated in V/Krpm, Volts per 1000 rpm, so some calculation is needed to arrive at these units when you are given V/rad/s, Volts per Radians per second. If for example, the motor has a 0.49V/rad/sec, we need to first convert the radians to degrees. So we know that there is approximately 6.28 radians per revolution, we can say the Kv is 0.49V/(1/6.28 revolutions)/sec, or 0.49V/0.159revs/sec. Converting to rpm, we multiply the denominator by 60 results in 0.49V/9.58rpm.
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How does it lower high blood pressure?

Questions about lower blood pressure with breathing and musi...
There are at two explanations for the positive effects of slow breathing on blood pressure. The first is a simple physiological response: Breathing slowly and deeply relaxes muscle tension, particularly in the chest area, which allows the blood vessels to open up and relieve pressure on the heart. Now there is a new theory proposed by Dr. David Anderson of the National Institute of Health that has less to do with relaxation.
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I don't see any power lines down, so why is my power out?

Greenville Utilities - FAQs
Outages occur for many reasons. You may not see any lines down near your house, but closer to the substation a tree may have fallen on this your circuit. There could be several reasons for the outage, ranging from lines being down to a breaker being tripped off line.
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What is the voltage of the power supply in Norway?

Frequently Asked Questions (Norway - the official site in th...
The electricity supply in Norway is 230 V (same as the UK), but appliances up to 240 V will work. Plugs have two round pins, and adapters are available.
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What is the Power Voltage in Tahiti?

ETravelBound.com - Tahitian Vacation Packages and Travel Inf...
Most of the hotels use 110 or 220 volts, a.c. 60 cycles. Power outlets for shavers and other appliances are a convenience provided in most hotels. A converter/adaptor for other appliances is required.
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What is a constant voltage power conditioner?

Sola/Hevi-Duty
Although a constant voltage power conditioner (sometimes referred to as constant voltage transformer or voltage regulator) is a transformer like device, its design and function are totally different. The function of a constant voltage power conditioner is to provide a voltage across its secondary terminals within a specified tolerance (usually ?5%) as long as the voltage impressed on the primary is within the specified bandwidth (usually +10% to -20%).
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have High Voltage 1 Henry chokes / inductors ?

equipment returned during 1 month home trial) that ....... our GBP £250 VALVE amplifier will sound 2 times to 10 times better (depending on how fussy you are) than GBP £700 to GBP £1200 Prima Luna valve amplifiers (including Prima Luna Monoblocks), (Please compare the size of the output transformers) equipment returned during 1 month home trial) that ......
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What is High Voltage Security Fencing?

Frequently Asked Questions of a HIGH VOLTAGE SECURITY with E...
Answer: It is one or more bare conductors that is charged with approximately 10,000 volts that are mounted on insulators (ASAT-77)(LOC-41)(ASAT-70)(ASAT-72). This can be done over a cement wall, or make an inter-woven "chain-link" fence unclimbable, or design and constructed as a stand-alone fence. Please refer to our picture collection.
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How high a voltage can be applied?

Diode | Discrete | FAQ | Support | NEC Electronics
If the static electricity withstand amount is an issue, use of the NNCD Series, which guarantees the static electricity withstand amount, is recommended. In this case as well, calculate the junction temperature under the actual usage conditions similarly to Q1, and check that the absolute maximum rating for the junction temperature (Tj) is not exceeded. For the concept and junction temperature calculation method, refer to the following document provided on this website.
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How high off the ground should the Power Bar be used?

Frequently Asked Questions and Customer Comments - The F.O.D...
For the M & MW Series units the recommended operating height from the ground is the lowest possible height up to a maximum of five inches (12.7 cm). This is typically 3" to 5" (7.5 to 12.7 cm). Measure the highest known obstruction that will be driven over in the operations area, and use that as a starting point. Raise or lower until optimum performance height is reached.
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Why can't you just put more lights on etc. to lower the Voltage. ?

F650 Flaying the VR FAQ (obsolete!)
Because that has the opposite effect.! The way I understood it things like leaving your High Beam on and adding any accessories basically helps cook your VR and your battery, because to supply 12V to the Lights 'way-up" the front there, (with all the associated losses due to poor connections etc) the VR has to (via control of the Alternator) pump out maybe 14.8 or more Volts close to the battery, which overcharges it AND fries the VR.
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Why do you say Ski Skoot is a "safer" scooter?

SkiSkoot --use your Razor scooter in the snow!
First, the Ski Skoot scooter has a special "forward-facing" rear brake with extra stopping power. No other scooter brand has that type of brake. The extra stopping power helps kids slow down and stop easier if they ride too fast, so they don't lose control, fall off their scooter, and hurt themselves on the pavement. Second, we have added a safety locking pin on the scooter handle tube. This prevents the scooter handlebars from unexpectedly collapsing downward when kids are riding their scooter.
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Can existing lines and poles be used for the new 345 kV line from Columbus to northwest Lincoln?

Frequently Asked Questions - Electric Transmission Reliabili...
Size is significantly different from a 115 kV line to a 345 kV line. Everything (with a 345 kV line) has to be bigger, taller, and the wires have to be further apart. There may be instances where the line route is able to use an existing right-of-way, or the project engineers may be able to double circuit portions of the line. But the double circuit option can cost a lot more money.
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Will NPPD try to route the new 345 kV line along section lines?

Frequently Asked Questions - Electric Transmission Reliabili...
Yes, it is required by state law to route along section and half-section lines. This method helps assure a working relationship with landowners along the route. NPPD works with the landowners to put structures in corners to limit any agricultural impact. It is important to NPPD that it continues to have a good working relationship with landowners, recognizing the District will be working with them for a long time.
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Who do I call to have power lines marked?

Frequently Asked Questions - Dominion North Carolina Power
North Carolina state law requires anyone performing excavation to first call the statewide notification center's number. Dial "One Call" at 1-800-632-4949. Callers must then wait 48 hours while utilities locate and mark their underground facilities. View additional information here.
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How are trees managed around power lines?

General questions
Our tree-trimming contractors are trained to work around power lines and trim trees in accordance to nationally accepted pruning standards. The National Arbor Day Foundation promotes "Plant the right tree in the right place," which Otter Tail Power Company fully endorses. Only low growing tree species should be planted around power lines, eliminating the need for these trees to be trimmed. Trimming trees is an inefficient solution for maintaining clearances to power lines.
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Are power lines a health hazard?

Easier Home Loans - Buying a New Home: You've Found It: FAQ
There are no definitive research findings that indicate exposure to power lines results in greater instances of disease or illness.
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Why aren't all power lines put underground?

FAQ
To keep the cost of electricity down. Underground cables are much more expensive to install than overhead lines. It is true that they generally require less maintenance and usually suffer less faults, but cable faults are much harder (and thus more expensive) to locate and much more expensive to repair. Because repair can take a long time, alternative supply lines must be installed to avoid lengthy interruptions of consumers, further increasing the cost of underground supply.
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How does the Model 625 measure Power Level and Voltage?

BNC | FAQ | Model 625/630/632 | Frequently Asked Questions (...
The signal at the External Modulation In connector are measured and the results displayed on the 625A"s front panel and sent to the RS232 port.
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Which voltage/power sockets are being used in Peru?

Peruline, online Reiseführer: Informationsservice ü...
Just like in Europe the general voltage is 220. It should therefore not be a problem to charge your batteries for digital cameras, portable CD players etc. Many sockets can be used with both, the European plugs with their round outlets or the American ones with their 2 dies. Generally, the American style sockets are spread, but you can buy adapters in any supermarket or specialized store or market.
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