EMF, if you're talking about the conductors that land on the line terminals of the meter itself, then you're most likely looking at a non-permitted service upgrade. The meter was pulled by who-knows-who, the load-side conductors were upsized along with the panel, and the meter was plugged back it.
I've seen it a lot, including a couple of electrical fires, where an upgrade was sold along with a central A/C installation, probably also not permitted or inspected. In both cases, the house had recently received glowing (pardon the pun) accolades by a private home inspector just before being purchased.
In one of these cases, there were no cable connectors of any kind, even the service cable, there were no grounding electrodes, and the 10/2 NM feeding the water heater caught fire during a storm. Somehow, the incoming neutral became energized, and the water-heater EGC was grounded through the water pipes.
Added: If anyone wtill wonders why water-pipe bonding has to be sized per the service rating, there's a good reason.