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in Arizona according to the Department of Energy, they call for in an attic insulated home to have the equivalent of 16 inches to 18 inches of blown in attic insulation. Attic insulation is measured in R values regardless of what type of insulation you blow in or lay down. Attic guard is usually your best type of insulation which should be blown in at an R value of 49-60 in an Arizona home
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What happens to the value of insulation resistance of a cable when the cable gets older?
Insulation resistance should be approximately one megohm for each 1,000 volts of operating voltage, with a minimum value of one megohm. For example, a motor rated at 2,400 volts should have a minimum insulation resistance of 2.4 megohms.
Should attic insulation be covered with plywood to create storage space?
As long as you do NOT compress the insulation. If your wanting the area for storage your R-value (insulating value) will only be as good as the depth of the rafter you are covering.
What result should you obtain when you do megger tests for motor?
we will get its insulation resistance value wchich should be greater than 200Mohms
U value of r-19 insulation?
The U value is the inverse of the R value. For R value 19 insulation the U value is 1/19, or 0.0526.
What value does 10 insulation give?
If you are referring to the R value of insulation, then 10 would be the 'thermal resistance' value of the insulation. A value of 10 is about what 3 1/2 inches of fiberglass batt insulation would give you. That is what you might put within your exterior walls if you are using wood studs. The higher the R value the better insulation you will have. When you add up all of the R values of the materials that make up your exterior wall you will get your total value. Depending on where your building is located, and the climate in that area, you will need to adjust your insulation accordingly.
The effectiveness of insulation is rated with?
I want to say either R-Value or Temperature Value? Probably R-Value... Out of answers: a. convection value b. R-value c. temperature value d. solar value
Is r-value good or bad?
it is a good thing i think R Value is the thermal resistance of a given material. The higher the R Value the more thermal resistance and the better the insulation. So, an R48 roof system is warmer than an R32 roof system. All insulation materials are rated by their R Value. An inch of rigid insulation has a higher R Value than an inch of fiberglass insulation. Check with the insulation manufacturer for the R Value.
Is the higher the R-value of insulation the less resistant to heat flow?
No, this statement is inaccurate. The higher the R-value of insulation, the more resistant it is to heat flow. R-value measures the effectiveness of insulation in resisting heat transfer, with higher values indicating better insulation properties.
What does an R-Value tell you?
It is the measure of insulation against heat/cold afforded by varying thicknesses and composition of construction insulation materials. The higher the "R" Value the better the insulation characteristics.
What is the R-value per inch of rigid insulation?
The R-value per inch of rigid insulation is typically around 4.0 to 6.5, depending on the specific type and brand of insulation.
What should be minimum insulation resistance value for 11 kV HT cable?
65 meg ohm if it is 11 kv
How is insulation measured?
Floors, attics and walls all require insulation of different R-Values which are measured by the thickness of the insulation. The R-Value determines how well the insulation will resist heat flow. The higher the R-Value the more resistance it has to heat and cold. If you are adding to existing insulation there is another factor to consider. You will have to determine the R-Value of the existing to know how much additional insulation to add
