Sparky,
In 555.19(4) it states that there is a 30A minimum. Then in (a) it specifies "not less than 30A" (like you had a choice?) and then talks about Locking and Pin and Sleeve types. Don't Pin and sleeve types lock too? Unless I'm missing something why couldn't they just say it must be a 30A minimum and of a Locking and Grounding type?
Bill
