Approved Uses of Type MI Cable

Article 332 covers the use, installation, and construction specifications for mineral-insulated, metal-sheathed, Type MI cable.

July 2, 2014

Which of the following statements about Type MI cable is correct?

a) It may be used in any hazardous (classified) location where permitted by other Articles of the Code.
b) It shall not be permitted for branch circuits.
c) It shall be securely supported at intervals not exceeding 10 ft.
d) none of the above

See answer and applicable Code reference

The correct answer is: a) It may be used in any hazardous (classified) location where permitted by other Articles of the Code.

Article 332 covers the use, installation, and construction specifications for mineral-insulated, metal-sheathed, Type MI cable. Section 332.10 lists the 11 uses permitted for this type of cable. As noted in 332.10(7), Type MI cable shall be permitted "in hazardous (classified) locations where specifically permitted by other Articles in this Code."