The ampacity of a No. 12 aluminum wire with RHW insulation installed in a raceway with 19 other wires is most accurately 7 A, as the NEC dictates derating to 50% for more than 9 conductors, which is 7.5 A. We typically select the nearest standard size of overcurrent protection device below this value, giving us 7 A in this case.
Explanation:The student is asking about the ampacity of a No. 12 aluminum wire with RHW insulation when installed in a raceway with 19 other wires. The term ampacity refers to the maximum current an electrical conductor can handle before deteriorating under the heat caused by electrical resistance, which is an important consideration in electrical wiring installations. According to the National Electrical Code (NEC), the base ampacity of No. 12 aluminum wire is generally 15 amps. However, when multiple wires are bundled together, as in a raceway, the ampacity must be derated due to the reduced ability to dissipate heat.
For 4-6 current-carrying conductors, the NEC suggests derating to 80%, 7-9 to 70%, and more than 9 to 50%. Therefore, with 20 conductors, the ampacity would be derated to 50% of 15 A, which is 7.5 A. But in practice, we use the nearest standard size of overcurrent protection device below the ampacity after derating, which usually brings us to either 7 or 5 amperes. Options 10 A and 15 A would be too high and disregard the need for derating. Thus, the most accurate answer, based on NEC guidelines, would likely be 7 A. Still, official guidelines and local regulations should be consulted to determine the exact ampacity as it may vary based on specific conditions.
Based on the NEC guidelines, the ampacity for No. 12 aluminum wire with RHW insulation must be derated when in a raceway with multiple wires. Normally, it is 15 A, but with 20 wires, it would typically be derated to 80%, which closest matches option A, 7 A.
The ampacity of a No. 12 aluminum wire with RHW insulation installed in a raceway with other wires will be de-rated according to the National Electrical Code (NEC). The NEC provides a table for the allowable ampacities of conductors, but they must be adjusted when multiple conductors are bundled together, as they generate more heat and can handle less current.
For No. 12 aluminum wire with RHW insulation, the typical ampacity is 15 A when not in a bundle. However, the NEC states that for more than 3 wires in a conduit, the ampacity must be derated to 80% of this value. Since there are a total of 20 wires in this case, the ampacity would have to be derated further.
Unfortunately, the question does not provide the exact de-rating factor needed for a bundle of 20 wires; the NEC must be consulted directly for specific de-rating factors. Nevertheless, the closest answer from the provided options, based on the typical 80% de-rate, would be 7 A (Answer A).
1. Which utility would you use to return the common name of the computer you are at?
The utility you would use to return the common name of the computer you are at is Ping.exe. This is the one of the utility which are in first command line utilities. It's easy, first you need to open cmd.exe then you should enter ping-your ip adress, this reveals the TCP/ICP name of the computer you are at.
Which access control principle specifies that no unnecessary access to data exists by regulating members so they can perform only the minimum data manipulation necessary
You have three nps servers known as server1, server2, and server3. on server1, you have a remote radius server group that contains server2 and server3. server2 and server 3 are configured to authentication remote users. what do you need to do to configure server1 to forward radius authentication requests to server2 and server3?
What type of traffic always goes to all devices in a subnet?
But this time use 16 kib pages instead of 4 kib pages. what would be some of the advantages of having a larger page size? what are some of the disadvantages?
Here are the advantages and disadvantages of larger paper size:
Advantages:
Reduces minor page faults.
Disadvantages:
There will be a decrease in the number of frames.
There will be an increase number of page faults.
Waste of more space with the internal fragmentation.
Harrison is working on a paper that requires research support. he knows that the ashford library should be his primary resource for information, but he also knows that certain websites offer credible material too. he feels comfortable investigating government websites or those hosted by educational organizations. harrison can most easily identify such websites by checking the __________.
Your license will be revoked if you are found guilty of not stopping to give help when the vehicle you are driving is involved in a crash causing ____________.
In Florida State, your license will be revoked if you are found guilty of not stopping to give help when the vehicle you are driving is involved in a crash causing death or personal injury.
What causes an auto crash?Many auto crashes are caused by distracted driving.
Distracted driving is the result of paying less attention to the road. Instead, the driver concentrates on other objects, including mobile devices, passengers, etc.
Thus, in Florida State, your license will be revoked if you are found guilty of not stopping to give help when the vehicle you are driving is involved in a crash causing death or personal injury.
Learn more about driving in Florida State at https://brainly.com/question/4938405
The ______________________ is the part of the ip address that is the same among computers in a network segment.
Network signaling is a function of which layer of the osi model
If your driving privilege is suspended or revoked you may be eligible to apply for a hardship license or reinstatement to determine your eligibility. You should contact:
Answer:
The Bureau of Administrative Review Officers
Explanation:
YOu´ve got to break the law or have too many infractions under a divers license in order for your license to be revoked, so if you actually get your license revoked your only hope is to attend to the local Bureau of Administrative Review Officers and ask them for a review on your revokation and get a hardship license or a reinstatement of the former one.
When you boot up a computer and hear a single beep, but the screen is blank, what can you assume is the source of the problem?
Answer:
The monitor or monitor cable.
Explanation:
If the CPU actually turns on and you can hear a beap, the problem could be with the monitor or the monitor cable, it might not be well connected to the CPU or the power chord could be misscontacting, so in that case you should reconnect it properly, that could be the mos logical thing to assume is the problem.
You're working at a large industrial plant and notice a tag similar to the one shown in the figure above. Which of the following actions should you take?
A. Operate this switch only if more than 24 hours have elapsed since the tag was signed.
B. Operate this switch only after making certain no one is working on the affected circuit.
C. Operate this switch only after normal working hours.
D. Operate this switch only after getting permission from the person who signed the tag.
Is task location less important than task language?
A(n) ____ interface controls how users enter data and instructions into a computer and how information is displayed on the screen.
It's safe to download files from the internet if you perform regular windows security undated; that is all you need to protect your computer from viruses
Final answer:
Regular Windows security updates are crucial but not the sole measure to protect against viruses; antivirus software and safe browsing habits are also needed. Upgrading Windows may be needed for compatibility with newer files.
Explanation:
The question concerns whether performing regular Windows security updates is sufficient to protect a computer from viruses when downloading files from the internet. While keeping your Windows operating system up to date is crucial for security, it is not the only measure you should take to protect your computer. Antivirus software, safe browsing habits, and a firewall are also essential components of a comprehensive security approach.
Furthermore, the concept of planned obsolescence addressed in the provided information speaks to a different issue related to software compatibility rather than virus protection. Upgrading your Windows operating system may be necessary to maintain compatibility with newer files, but it is a separate concern from the question of safety in downloading files.
What is the unique impact him professionals have on coded data?
Clip art, by default, is formatted as a(n) ____, which cannot be moved to a precise location on a page.
The documentation resulting from the design phase of the ____ is a set of design specifications that illustrates the program needed to fulfill the program requirements.
With asymmetric encryption, two different keys are used for encoding and decoding a message.
a. True
b. False
To close a tab, click the ____ button in the web page thumbnail on the tab switcher.
Answer:
Close
Explanation:
For the most effective presentation, it's best to A. watch the projection screen to ensure there are no errors in your presentation.
B. practice to the point where speaker notes aren't necessary.
C. read the slide material to the audience verbatim to ensure they understand your message clearly.
D. rely heavily on the speaker notes to ensure you cover each point.
Final answer:
The best strategy for an effective presentation is to practice thoroughly until speaker notes are no longer needed, ensuring a smooth and engaging delivery while using clear and accessible media and visuals.
Explanation:
The most effective presentation strategy is B. practice to the point where speaker notes aren't necessary. This allows you to deliver a speech that is fluent and engaging, showing confidence and deep familiarity with the subject matter. While practicing, use your outline as a framework to organize your main ideas and ensure a natural flow.
During your presentation, make sure your visuals and any media components are clear, accessible, and engaging without detracting from your message. Remember, well-prepared speakers can infuse their delivery with vocal techniques, and this level of preparation allows you to interact more dynamically with both your content and audience.
What tool is used to connect a utp cable to a patch panel?
Would you expect all the devices listed in bios setup to also be listed in device manager? would you expect all devices listed in device manager to also be listed in bios setup?
The files necessary to convert print commands to a particular printer’s print language are called the
Improper electrical terminations lead to high ? connections, which in turn lead to electrical system failures.
Improper electrical terminations lead to high resistance connections, which in turn lead to electrical system failures. Incorrect electrical connections can cause fire or other damage to property and can cause damage and traffic.
EXPLANATION:
There are six common errors of wire connection and its solution:
1. Loose Wire Connections at Switches and Outlets
To overcome this problem, it is first necessary to turn off the power to the wall switch, lamp, or suspected outlet. With the power off, you can detach the cover plate and use a torch to carefully inspect the screw terminals inside where the cables are connected. If you find something loose, tighten the screw terminals carefully to the cable; most likely, this will solve the problem.
2. Wire Connections Made with Electrical Tape
To solve the problem, turn off first the power to the circuit. Afterward, detach the electrical tape from the cables and clean them. Check if there is an exact number of open wires showing (for most connectors, it means about 3/4 inches), then join the cables together with a cable nut or other official connectors (now there are push-in connectors that some aces like use).
3. Two or More Wires Under One Screw Terminal
To fix this problem, once again, this maintenance involves first switching off the power. Then, the two offending cables are detached from their screw terminal. Cut a six-inch pigtail cable of the same color as the two cables (use a green pigtail to join two bare copper grounding cables).
4. Exposed Wires
To solve this problem, switch off the power to the device, then remove the cable and remove the excess cable or remove the additional insulation so that the correct number of cables is exposed. Then, reconnect the cable to the wire nut or screw terminal. Pull the cable a little to make sure they are steadily connected.
5. Loose Connections on Circuit Breaker Terminals
To solve a problem, maintenances on the major service panel must be carried out by a professional electrician. Amateurs should only try this improvement if they are experienced and have knowledge of the electrical system.
6. Faulty Neutral Wire Connections at Circuit Breaker Panels
To solve this problem, the electrician will inspect to validate the neutral cable is sufficiently stripped and properly installed to the neutral bus.
LEARN MORE
If you’re interested in learning more about this topic, we recommend you to also take a look at the following questions:
• An electric cell is a source of electric current because of a ________ between the terminals https://brainly.com/question/3583759
• Which of the following is maintained across the terminals of a battery? https://brainly.com/question/5564824
Keywords : Improper electrical terminations, electrical system failures.
Subject : Computers & Technology
Class : College
Sub-Chapter : Electrics
The ____ loop is particularly useful when processing arrays.
Final answer:
The for loop is particularly useful when processing arrays. When you need to iterate over array elements, the for loop allows you to execute a block of code a certain number of times, which corresponds to the length of the array.
Explanation:
Arrays are collections of data items that are accessible via numeric indices. To process each element in an array, you often need to access them sequentially, starting with the first element and ending with the last. The for loop is ideal for this situation because you can define a loop control variable that starts at 0, then incrementally increase it in each iteration until it matches the length of the array (usually one less than the array length because array indices typically start at 0). This way, you can work through the array systematically. The for loop provides a clear structure for iterating over arrays and is compact in syntax, making it a preferred choice among programmers when dealing with collection-based data structures like arrays.
A mental model to help a computer troubleshooter understand and explain a problem situation is based on ____.
What critical issue in symmetric and asymmetric encryption is resolved by using a hybrid method like diffie-hellman?
Answer:
key exchange
Explanation:
Digital data is _____ and analog information is _____.
A field in an access database table that has no value is determined by access to have a ____ value