Describe the information in NEC Table 310.104(A), which specifies types of insulation.

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The table is divided into seven main columns. The first column lists the trade name of the insulation; the second lists its identification code letter; the third column lists its maximum operating temperature; and the fourth shows its applications and where it is permitted to be used. The fifth column lists the material from which the insulation is made; the sixth states its thickness; and the last column lists the type of outer covering over the insulation.

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What is the number one factor determining a crop's suitability for a particular climate?

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If a material has an R-value of 30, then the corresponding U-value will be ____.

A. 0.033 B. 0.33 C. 33 D. 330

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