Tennessee Limited Licensed Electrician (LLE)
Timed Exam Mode - Simulated Conditions
The TN LLE exam certifies electricians to perform limited electrical work in Tennessee, testing knowledge of the National Electrical Code, wiring methods, grounding, overcurrent protection, and load calculations.
Which of the following is NOT permitted to be used as a grounding electrode according to NEC 250.52(B)?
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A
A metal underground water pipe in direct contact with the earth for 10 feet
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B
A concrete-encased electrode ('Ufer' ground)
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C
An underground metal gas piping system
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D
A rod electrode driven 8 feet into the earth
Start Full Exam - 40 Questions