> The large 3 phase input on it 3803 is likely overkill for even a controller > and full string of 8 drives. It's easier to oversize things and have a 3x > safety margin, then deal with running close to the limits and risk any > problems from poorly installed site wiring.
It is overkill, but a full string can really punish the circuit breaker with enormous current surges. Better to overdo it with a breaker that can handle the spike of all eight 3420s deciding to do some reversing within a few seconds of each other. Even a simple setup with a 3803 and a single 3420 will create large surges that a household circuit may not like much. -- Will
