It would be possible for the load manager to compute available current, and adjust current limits if necessary, just as a new transaction commences. This could happen at authorization time. E.g. suppose
n vehicles are currently charging, and using the electrical feeder at full capacity
A new vehicle approaches and initiates a charging session; CP sends Authorize.req
CS evaluates tag id for validity, assume it passes
CS informs LM (load manager) that a new vehicle is about to connect
LM computes new reduced current limits for existing vehicle chargers, effectively "making space" for a new vehicle.
It would be possible for the load manager to compute available current, and adjust current limits if necessary, just as a new transaction commences. This could happen at authorization time. E.g. suppose
Authorize.req
StartTransaction.req
StartTransaction.conf