Re: Tap Conductors
Not without being in violation of 110.14(A) second paragraph,
"Terminals for more than one conductor . . . shall be so identified."
You have the problem of the load on the service OC device . . .
is it overloaded with the new 100 ampere service?
You also, are in violation of 230.40,
"Each service drop or lateral shall supply only one set of service-entrance conductors."
And, 230.72(A) would be violated,
"The two to six disconnects as permitted in 230.71 shall be grouped. Each disconnect shall be marked to indicate the load served."
Other than that, I don't see a problem.