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Nope, no need. The only purpose of the exam is to limit the number of "qualified" electricians, keeping the salary (and cost) high. Quite anti-capitalistic. Note the most stringent requirements for licenses are in the most socialistic cities.
Why bother? Unless it's BillyG's mansion, there aren't too many choices.
Likely because it makes no sense.
Like I said before, you're have an over-inflated sense of self-worth. Your skills are a dime a dozen, even if your license isn't.