what is the minimum trade size rmc permitted to be installed between two panelboards that are 5 feet apart? the rmc will contain four 4/0 awg conductors and one 4 awg ground. all conductors are thhn/thwn.
Answers
The minimum trade size RMC permitted to be installed, is 4 inches. If the RMC is being used to enclose the conductors and provide physical protection, the minimum trade size required is based on the number and size of the conductors contained within it.
The minimum trade size of rigid metal conduit (RMC) that is permitted to be installed between two panelboards that are 5 feet apart depends on the type of RMC being used and the number and size of the conductors contained within it.
In this case, there are four 4/0 AWG THHN/THWN conductors and one 4 AWG THHN/THWN ground conductor, which requires a minimum trade size of 4 inches according to Table 1 of the NEC.
Therefore, the minimum trade size of RMC that is permitted to be installed between two panelboards that are 5 feet apart, and containing four 4/0 AWG THHN/THWN conductors and one 4 AWG THHN/THWN ground conductor, is 4 inches.
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Related Questions
which type of sprinkler control valve extends horizontally through the wall with the target and valve operating nut on the outside of the building?
Answers
A wall-mounted sprinkler control valve is a type of sprinkler control valve that extends horizontally through the wall of a building, with the target and operating nut located on the outside of the building.
Using a Wall-Mounted Sprinkler Control ValveThis type of valve is primarily used to regulate water flow to sprinkler heads, allowing for precise control and easy maintenance. The target is typically a small disk or wheel, which allows the user to adjust the flow of water to the sprinkler by turning the operating nut. The wall-mounted sprinkler control valve is usually installed during construction or renovation, and is an essential part of the sprinkler system. It is important to keep the valve operating efficiently by regularly checking for debris, corrosion, and other issues that may affect the performance.
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Fill in the tables and find the equivalent resistance for the following circuits:
Answers
Answer:
12 32
Explanation:
Digital Clock +int hour +int min +int sec + String ampm +Digital Clock() +Digital Clock(h:int, m:int, s:int, ap:String) +setHour(h:int): void +setMin(m:int)): void +setSec(s:int) ): void +setAMPM (ap:String): void +setTime(h:int, m:int, s:int, ap:String): void +getTime(): String +tick():void public class ClockTest { public static void main(String[] args) { //Test the constructors DigitalClock clockOne = new DigitalClock(); DigitalClock clockTwo = new DigitalClock (11, 58, 30, "AM"); System.out.println("Clock System.out.println("Clock One reads: "+clockOne.getTime()); Two reads: "+clockTwo.getTime()); //Test the set methods clockOne.setHour (55); //Invalid hour clockOne.setMin (75); //Invalid minutes clockOne.setSec (85); //Invalid seconds clockOne.setAMPM("BlahBlah"); //invalid //Time should be unchanged System.out.println("Clock One reads: "+clockOne.getTime()); clockOne.setTime (8, 45, 52, "PM"); //Test the set time method with valid data, which also calls the individual set methods //time should now be changed System.out.println("Clock One reads: "+clockOne.getTime()); //Use a loop to test the tick() method on clock two for (int i=0; i < 5000; i++) { clockTwo.tick(); System.out.println(clockTwo.getTime());
Answers
The given code implements a Digital Clock class in Java with methods for setting and getting the time, as well as a tick method to simulate the clock ticking.
The Digital Clock classThe Digital Clock class has attributes for hour, minute, second, and am/pm indicator. It provides constructors to initialize the time and various methods for modifying and retrieving the time.
In the ClockTest class, instances of the Digital Clock class are created and tested. The time is set using the set methods and the setTime method, and the getTime method is used to display the current time. Invalid inputs are also tested, ensuring that the time remains unchanged.
Additionally, a loop is used to simulate the ticking of a clock for a certain number of iterations, with the time being printed after each tick.
Overall, the code demonstrates the functionality of the Digital Clock class and its ability to track time accurately.
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The ACH (air changes per hour) of a house is a measure of its air-tightness. The formula for ACH is
ACH=60L/V,
where L is the air leakage in cubic feet per minute (cfm), and V is the volume of the house in cubic feet. If a house has a volume of 25,700 cu ft, what is the maximum amount of air leakage that would result in an ACH of no more than 2.25?
Answer: The maximum amount of air leakage that would result in an ACH of no more than 2.25 is approximately _______ cfm.
Answers
Answer: I believe the answer is 963.75 if I am reading the question right.
Explanation:
ACH=60L/V
ACH=2.25
V=25,700
25,700*2.25=57,825
57,825/60=963.75
L=963.75
60(963.75)/25,700=2.25
The maximum amount of air leakage that would result in an ACH of no more than 2.25 would be approximately 956.25 cfm (cubic feet per minute).
Given that ACH of a house is a measure of its air-tightness and the formula for ACH is ACH = 60L/V. It means that ACH is inversely proportional to air-tightness or leakage. Therefore, the lower the air leakage the higher the ACH and vice versa.Mathematically, it is represented as:ACH ∝ 1/L or L ∝ 1/ACH
We can solve the question as follows:ACH = 2.25 (since the maximum ACH is 2.25)The volume of the house, V = 25,700 cubic feet.Substituting in the formula,2.25 = 60L/25,700Dividing both sides by 2.25 gives us,L = (2.25 * 25,700)/60L = 956.25 cubic feet per minute (cfm)
Therefore, the maximum amount of air leakage that would result in an ACH of no more than 2.25 is approximately 956.25 cfm (cubic feet per minute).
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FOR BRAINLIST HELP PLEASE IS A DCP
A- Causes of the 13t Amendment
B- Reasons for Women's Suffrage
C- Reasons for the Freedmen's Bureau
D- Causes of the Plantation System
Answers
Answer:
C
Explanation: Freedmens Bureau provided resources for southerners and newly freed slaves
You
are a database administrator (DBA) with user "sysdba" and one of
your responsibilities is to make the database secure and manage the
access for multi database user. Write the proper steps and comm
Answers
As a database administrator (DBA) with user "sysdba" and one of your responsibilities is to make the database secure and manage the access for multi-database users, the following are the proper steps and comm:Step 1: Create the roles that you want to assign to the multi-database users using the CREATE ROLE command.
CREATE ROLE command is used to create a role that can be granted to users or to other roles. For example, if you want to create a role called "finance" that has select, insert, update, and delete permissions on all tables in the finance schema, you would use the following command:CREATE ROLE finance;GRANT SELECT, INSERT, UPDATE, DELETE ON finance.*
TO finance;Step 2: Create the multi-database users using the CREATE USER command. CREATE USER command is used to create a new database user.
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What are the four categories of engineering materials used in manufacturing?
Answers
Answer:
metals, composite, ceramics and polymers.
Explanation:
The four categories of engineering materials used in manufacturing are metals, composite, ceramics and polymers.
i) Metals: Metals are solids made up of atoms held by matrix of electrons. They are good conductors of heat and electricity, ductile and strong.
ii) Composite: This is a combination of two or more materials. They have high strength to weight ratio, stiff, low conductivity. E.g are wood, concrete.
iii) Ceramics: They are inorganic, non-metallic crystalline compounds with high hardness and strength as well as poor conductors of electricity and heat.
iv) Polymers: They have low weight and are poor conductors of electricity and heat
In an orthogonal cutting, a cylinder is turned to reduce the diameter with the following processing conditions Initial diameter Depth of cut Feed Rake angle Chip-tool contact length Cutting force Thrust force Spindle RPM 100 mm 2 mm 0.1 mm/rev 10° 0.5 mm 450 N 150 N 60 Calculate a) Shear and normal stresses on chip-tool interface b) Shear angle using the Lee and Shaffer's model c) Chip thickness d) Shear and normal stresses on shear plane e) Specific cutting energy f) Spindle horse power
Answers
In an orthogonal cutting, a cylinder is turned to reduce the diameter with the following processing conditions Initial The spindle horse power is 11.78 kW.
Shear and normal stresses on the chip-tool interface To determine the shear stress (τ) and normal stress (σ) on the chip-tool interface, the following formula will be used:τ = the thrust force, t is the chip-tool contact length, is the width of the chip.t = 0.5 mm w = 0.1 mm/rev * 2 mm = 0.2 mmτ = 450 N / (0.5 mm * 0.2 mm) = 45000 N/m²σ = 150 N / (0.5 mm * 0.2 mm) = 15000 N/m²Therefore, the shear stress on the chip-tool interface is 45000 N/m², and the normal stress is 15000 N/m².
Shear angle using the Lee and Shaffer's model Lee and Shaffer's model can be used to calculate the shear angle (ϕ) using the formula:ϕ = (1 / tan α_r) * [(1 + sin ψ) / (cos ψ)]whereα_r is the rake angle andψ is the clearance angle.α_r = 10°ψ = 90° - 10° = 80°ϕ = (1 / tan 10°) * [(1 + sin 80°) / cos 80°] = 18.19°Therefore, the shear angle is 18.19°.
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Shear stress on chip-tool interface = 300 MPa ;Normal stress on chip-tool interface = 52.17 MPa ; Shear angle = 5.74°Chip thickness = 0.57 mm ; Shear stress on shear plane = 263.16 MPa ; Normal stress on shear plane = 45.79 MPa ; Specific cutting energy = 113398.2 N/m ; Spindle horse power = 8.44 hp.
Given data:
Initial diameter = 100 mm
Depth of cut = 2 mm
Feed = 0.1 mm/rev
Rake angle = 10°
Chip-tool contact length = 0.5 mm
Cutting force = 450 N
Thrust force = 150 N
Spindle RPM = 60
Formula used:
Shear force = Cutting force - Thrust force
Chisel angle = Tan-1(1/ Tan Φ - Tan Φ / Tan λ)
Shear angle = Tan-1(Tan Φ / (Cos λ - Sin Φ Sin λ))
Chip thickness = Feed / Sin λa)
Shear and normal stresses on chip-tool interface
Chip-tool contact length, l = 0.5 mm
Shear force, Fs = Cutting force - Thrust force= 450 - 150= 300 N
Area of contact, Ac = t × l= 2 × 0.5= 1 mm2
Shear stress, τ = Fs / Ac= 300 / 1= 300 MPa
Normal force, Fn = Fs Tan λ= 300 × Tan 10°= 52.17 N
Normal stress, σ = Fn / Ac= 52.17 / 1= 52.17 MPab)
Shear angle using the Lee and Shaffer's model
Here, λ = 10°
Chisel angle, Φ = Tan-1(1 / Tan λ)= Tan-1(1 / Tan 10°)= 5.71°
Shear angle, α = Tan-1(Tan Φ / (Cos λ - Sin Φ Sin λ))= Tan-1(Tan 5.71° / (Cos 10° - Sin 5.71° Sin 10°))= Tan-1(0.1)= 5.74°c) Chip thicknessHere, λ = 10°Feed, t = 0.1 mm
Chip thickness, h = t / Sin λ= 0.1 / Sin 10°= 0.57 mmd)
Shear and normal stresses on shear plane
Shear force, Fs = 300 N
Shear plane area, As = t × d= 2 × 0.57= 1.14 mm2
Shear stress, τ = Fs / As= 300 / 1.14= 263.16 MPa
Normal stress, σ = Fn / As= 52.17 / 1.14= 45.79 MPae)
Specific cutting energy
Cutting power, Pc = Fs × vc= Fs × πdn/1000= 300 × π × 100 × 60/1000= 5669.91 W
Specific cutting energy, E = Pc / Vt= Pc / (f × Vf)= 5669.91 / (0.1 × 0.5)= 113398.2 N/mmf)
Spindle horse power
Spindle power, Ps = Pc / η= Pc / 0.9= 5669.91 / 0.9= 6299.90 W= 6.2999 kW= 8.44 hp (1 hp = 0.7457 kW)
Therefore,
Shear stress on chip-tool interface = 300 MPa
Normal stress on chip-tool interface = 52.17 MPa
Shear angle = 5.74°Chip thickness = 0.57 mm
Shear stress on shear plane = 263.16 MPa
Normal stress on shear plane = 45.79 MPa
Specific cutting energy = 113398.2 N/m
Spindle horse power = 8.44 hp
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Who is he where is he from
Answers
Answer:
Levi Ackerman is the tritagonist of the anime/manga series Attack on Titan. He is a Captain in the Survey Corps , known to be the strongest soldier alive. He has a harsh and unsocial personality, but is well-regarded by his subordinates and he cares about their lives. Levi Ackerman spent his childhood in the Underground City. It was the slums of the Attack on Titan’s entire world
Explanation:
what is geo technical
Answers
Most technicians install rebuilt or new power steering pumps rather than overhauling the defective unit in the shop. True or False?
Answers
Answer:
Most technicians install rebuilt or new power steering pumps rather than overhauling the defective unit in the shop.
True
Explanation:
It has been established that most technicians, instead of overhauling the defective power steering pumps, prefer to install rebuilt or revamped pumps or even new pumps when they could have overhauled the unit themselves. Some are afraid that leakage could occur again. They are not confident enough to do the overhauling in-house or some claim that they do not have the time and other tools to carry out the overhauling. Acknowledgedly, overhauling a power steering pump is not a job for the novice. They require experienced and skilled hands to do the hard work.
an amplifier with 10% negative feedback has an open loop gain of 30.If the open loop gain increases by 10% what is the percentage change in the gain with feedback
Answers
An amplifier with 10% negative feedback has an open-loop gain of 30. If the open-loop gain increases by 10%, what is the percentage change in the gain with feedback.
An amplifier with negative feedback is commonly used to reduce distortion and improve stability and sensitivity. The amount of negative feedback applied to the amplifier's output is an essential feature of the amplifier design. The feedback network is added to the amplifier to decrease its open-loop gain and therefore lower the distortion rate.
The gain of an amplifier without feedback is called the open-loop gain, while the gain with feedback is called the closed-loop gain. It is possible to calculate the closed-loop gain by using the following formula: A = Ao / (1+ Beta * Ao)Where A is the closed-loop gain, Ao is the open-loop gain, and Beta is the feedback fraction.β= feedback fraction= -0.1 (because the feedback is negative)Ao = 30
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Help me!!
Within the processes of a power plant, combustion product gases are available at 430 ºC. It is required to take advantage of the heat of these gases and it is proposed to size an economizer to heat pressurized water from 70ºC to 180ºC.
It is known that there is 8 kg/s of water with Cp=4260 J/kg.K. The gases have a flow of 30 kg/s and Cp=1100 J/kg.K. Calculate:
a) the heat that can be transferred from the gases to the water, in kW.
b) the outlet temperature of the combustion gases, in ºC.
b) the average logarithmic difference of temperatures of the economizer, in ºC.
c) the required heat transfer area in m2, for a counterflow configuration if the overall heat transfer coefficient is 60 W/m2 K.
d) If you plan to use a coil of tubes 4 m long and 15 cm in diameter, calculate the number of tubes needed for the economizer.
Answers
Answer: System Consists Of 1 Kg Of CO2 (Cp = 46.4 J Moll K:') Gas Initially At 1 Bar And 300K. The System Undergo
Explanation:
What braking system would be the most unsafe for a car going over 200mph?
Answers
Answer:
Deactivated Anti-Lock Braking System
Explanation:
Well this actually depends on the vehicles braking function
I'd say in this case not sure if ABS coz it prevents the vehicle from slipping while braking...
On the otherside ESP is inportant for it stability
What’s is the answer
Answers
Answer: A, B, C or D
Explanation: its either those
Some floor boxes must be installed to the correct height by adjusting the ____ before the concrete is poured.
Answers
Answer:
Measurement
Please mark me as brainliest!!!In a study, 54 cars are given synthetic blend motor oil and 81 cars received regular motor oil to see which increased engine life. What is the associated degrees of freedom?
(Write your answer below to the nearest whole number; no decimal places)
Answers
The associated degrees of freedom is 133. It is calculated by using the formula (54-1) + (81-1). it represent the independent information available to estimate parameters or test hypotheses in statistical analysis.
In statistical analysis, degrees of freedom represent the number of independent pieces of information available to estimate a parameter or test a hypothesis. In this study, the researchers divided the cars into two groups: one group of 54 cars received synthetic blend motor oil, and the other group of 81 cars received regular motor oil.
To determine the effect of the different types of motor oil on engine life, the degrees of freedom can be calculated using the formula
(n1 - 1) + (n2 - 1),
where n1 is the number of cars in the synthetic blend motor oil group and n2 is the number of cars in the regular motor oil group.
In this case, n1 is 54 and n2 is 81. Plugging these values into the formula, we get
(54 - 1) + (81 - 1) = 53 + 80 = 133.
Therefore, the associated degrees of freedom for this study is 133.
The degrees of freedom of 133 provide a measure of the sample size and the independent information available to analyze the impact of motor oil type on engine life.
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name as much parts in a car that you know
Answers
Answer:
engine suspension brake and more
Explanation:
consider a stokes flow due to a sphere rotating near a wall, argue from kinematic reversibility weather or not the rotating sphere will experience a force pushing it away or drawing it into the wall
Answers
In Stokes flow, the fluid velocity is proportional to the forces acting on the fluid and the fluid is assumed to be viscous and incompressible. The fluid velocity near a rotating sphere in Stokes flow can be determined using the equations of fluid dynamics.
What is the reversibility about?Kinematic reversibility is a property of Stokes flow, which states that the fluid flow is symmetric with respect to time reversal. This means that if the fluid velocity is recorded at a certain time, then the same velocity field will be obtained if time is reversed and the flow is replayed in the reverse direction.
When a sphere is rotating near a wall, the flow of fluid around the sphere creates a velocity field that pushes the sphere away from the wall. This flow can be considered as the fluid being pushed away from the sphere and towards the wall. If the flow is time-reversed, the fluid velocity field would be the same, but the direction of the velocity would be reversed. This means that the fluid would be drawn towards the sphere and away from the wall, pulling the sphere towards the wall.
Therefore, based on the property of kinematic reversibility in Stokes flow, the rotating sphere near a wall will experience a force that could either push it away from the wall or draw it towards the wall, depending on the direction of the flow.
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industrial accidents are usually caused by unsafe equipment and poor safety regulations. true or false
Answers
True. Industrial accidents are often caused by a combination of **unsafe equipment** and **poor safety regulations**.
Unsafe equipment can include malfunctioning machinery, lack of proper maintenance, inadequate safety features, or the absence of necessary safety precautions. When equipment is not designed, maintained, or operated in a safe manner, it increases the risk of accidents and injuries in industrial settings.
Similarly, poor safety regulations or the lack of effective safety protocols can contribute to industrial accidents. Insufficient training, inadequate safety procedures, failure to enforce safety regulations, and a lack of awareness regarding potential hazards can all contribute to an unsafe work environment.
To prevent industrial accidents, it is crucial to prioritize safety by implementing robust safety regulations, conducting regular equipment inspections, providing comprehensive training programs, and fostering a safety-conscious culture within the workplace. By addressing both unsafe equipment and poor safety regulations, the risk of industrial accidents can be significantly reduced.
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The two-second rule applies to vehicles traveling under?
Answers
Answer:The two-second rule is a rule of thumb by which a driver may maintain a safe trailing distance at any speed. The rule is that a driver should ideally stay at least two seconds behind any vehicle that is directly in front of his or her vehicle.
Explanation:
How is the foundation for a skyscraper different from a house?
Answers
Answer:
Shallow foundations, often called footings, are usually embedded about a metre or so into soil. ... Another common type of shallow foundation is the slab-on-grade foundation where the weight of the structure is transferred to the soil through a concrete slab placed at the surface.
Explanation:
Because I said so.
What is the role of the Scrum Master
Answers
Answer:
The Scrum Master is a key role in the Scrum framework for agile project management. The Scrum Master's primary role is to ensure that the Scrum team follows the Scrum process and values, and to remove any impediments that may prevent the team from achieving their goals.
Some of the specific responsibilities of a Scrum Master include:
Facilitating the Scrum process: The Scrum Master is responsible for facilitating all Scrum ceremonies, including daily stand-ups, sprint planning, sprint review, and sprint retrospective meetings. They ensure that all participants understand the purpose and goals of each ceremony, and that the ceremonies are conducted effectively.
Protecting the team: The Scrum Master acts as a shield for the Scrum team, protecting them from external distractions and interruptions that could prevent them from achieving their sprint goals. They also ensure that the team has a safe and productive working environment.
Removing impediments: The Scrum Master identifies and removes any obstacles that may impede the team's progress. They work closely with team members to understand the root cause of any impediments and help the team find creative solutions to overcome them.
Coaching the team: The Scrum Master is responsible for coaching the team on the Scrum process and values, as well as agile principles and practices. They help the team continuously improve their processes and practices to increase efficiency and productivity.
Ensuring transparency: The Scrum Master ensures that there is transparency and visibility into the team's progress, by maintaining the Scrum board, updating burndown charts, and communicating progress to stakeholders.
Overall, the Scrum Master is a servant-leader who supports the Scrum team in achieving their goals and helps them continuously improve their processes and practices.
Hope this helps!
A scale on a blue print drawing of a house shows that 666 centimeters represents 333 meters.
What number of centimeters on the blue print represents an actual distance of 272727 meters?
Answers
Answer:
545454cm
Explanation:
The blue print drawing of the house shows 666 centimeters, but the real picture of the house is 333 meters. So let the number of cm on the blueprint that represent the distance of 272727 meters be x. Firstly convert the meters to centimeters 666cm = 333m, x=272727m ; then cross multiply, 666cm=33300cm x=27272700cm ; x =(666cm×272727cm)/33300cm =545454cm.
Can space debris take out a whole state
Answers
Your company has been asked to design an air-traffic control
safety system by the FAA. The system must identify the closest two
aircraft out of all the aircraft within radar range. For a set P
c
Answers
Air traffic control is an important aspect of aviation that ensures the safety of the passengers, crew, and cargo. The Federal Aviation Administration (FAA) has asked our company to design an air traffic control safety system that can identify the closest two aircraft within radar range.
The system should be able to handle a set P of aircraft and efficiently identify the two closest aircraft from the set. The task requires knowledge of various aspects of air traffic control, including communication, navigation, and surveillance. Therefore, the design team should consist of experts in these fields.
Additionally, the team should develop algorithms that can detect the location of the aircraft, the altitude, and the speed. These data points should then be analyzed to identify the closest two aircraft based on their distance and bearing from each other. The team should also consider other factors such as weather conditions and altitude restrictions while designing the system.
Finally, the system should be tested thoroughly to ensure its reliability and accuracy. The system should be able to handle high traffic density and provide timely information to air traffic controllers. This will help reduce the risk of mid-air collisions and ensure that air travel remains safe and efficient.
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How much electricity does a city with 1000 people require?
Answers
The average person needs 893 kWh per month.
So 1,000 people would need 893,000 kWh per month.
Q2 [45 marks] Consider Ibra region where the installed solar panels cost on average 2 OMR /W.
[10 marks] What is the cost to install a 5kW PV system for a residence?
[10 marks] If the solar irradiance in Ibra is on average 800W/m2 and the installed panels have efficiency of 18%. How many panels are required if the panel’s area is 2m2?
[15 marks] Assume Ibra has an average of 10 day-hours, dusty environment which causes the efficiency of the solar system to drop by 10% on average, and 30 cloudy days/year which cause the efficiency of the solar panels drops by 50%. If electrical power cost per kWh is 0.05 OMR determine the break-even time for the 5kW PV system.
[10 marks] If the system to be off-grid, what would be the backup time if three 12-V batteries were selected each with a capacity of 200Ah. Assume that you can discharge the batteries up to 80% of their capacities.
Answers
Answer:
so hard it is
Explanation:
I don't know about this
please mark as brainleast
byýyy
A driver younger than 18 years of age may not operate a motor vehicle with any passenger who is not an immediate family member until 6 months from the date that the person's driver's license was issued.
O True
O False
Answers
ahahahahaggaaggagagag
The current flowing through a refrigerator connected to a 120V source is4A. How many watt hour of electrical energy does the refrigerator use in 8 hours
Answers
The refrigerator uses 8 x 120 x 4 = 3840 watt-hours of electrical energy in 8 hours.
What is electrical powerElectrical power is the rate at which electrical energy is transferred or consumed. It is usually measured in watts (W) or kilowatts (kW). Electrical power is the product of voltage and current. Power (P) = Voltage (V) x Current (I).
Calculate the current flowing through the refrigerator:
I = V/R = 120V/120Ω = 4A
Calculate the watt hours of electrical energy used:
Wh = P x t = V x I x t = 120V x 4A x 8h = 3840Wh
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