The full 41.7A - as that's the current actually flowing - the fact that it's not all transferring useful power matters not one jot to the cables. (The poor power factor - a mis-match between the current and voltage waveforms - means that in effect some power is flowing in the wrong direction during a part of the a.c. cycle - overall that power isn't lost but the cables still have to carry it forwards and back nonetheless.)
The actual current will be your higher value, although you will get no advantage from it! That is not a very good PF and some correction will be worthwhile if the metering is not kWh but KVAh. The difference is that the current and voltage waveforms are displaced from each other and peak at different times, ie. the maximum current no longer corresponds with the maximum voltage. The difference in running cost by meter type could be at least 25%, so it is worth notice or correction.
