If her a/c compressor is starting while her a/c system is still under pressure, it will draw a large amount of current for a longer than normal time while it tries to start. The a/c should be off for 4 or 5 minutes before the thermostat calls for cooling again so the pressure has time to equalize in the a/c for easier compressor starting.
A delay timer could be added to her a/c pretty cheap if that's the problem.
If that's not the problem it's nothing to worry about. But the poco would probably put in a bigger transformer and bigger cable and it would only cost the home owner a few thousand $.
[This message has been edited by maintenanceguy (edited 09-10-2004).]
