Hey wireless

I had recently been cold called for that same topic. The customer was inspected by their insurance agent and she gave me the instructions.

Bring Electrical system up to code
1. GFI in Kitchen and bath
2. Change Fuses to breakers.

Now there was nothing being done to the building contruction wise at all for years. So this is something just out of the blue.
In this case it was a commercial building with a 800A amp service. A CT Cabinet, 6 meter housing. A trough feeding variouse subpanels (with circuit breakers). There just happen to be 2 small disconnect with 40A Barrel fuses that fed Air Conditioners on the roof. So most insurance companies have their heads up their asses.

The 4th floor apartment of this same building happens to be on 1 single 20A circuit. Non grounded and various portions in Knob and Tube. I learned that from the owner's grandson who wishes the old lady would tear the building down

So I changed the fuses to breakers and installed 2 60A pull out disconnects and now she's fine.