Huh yeah I am not sure "Premises wiring" to me means anything I can access at any time and mess with, I as the utility customer might provide some conduit and wire that I own to connect to facilities of the serving utility and that is a 'service lateral' thats not covered under the NEC per 90.2(D)(5)(a) its covered by utility specs.It depends on where the service point is. Around here, the service point would be on the transformer spades. I know however that in other areas is is pretty common to have the service point be on the line side of the meter.
I can't tap the service lateral and get free power but I do own it, its before my service point.