Re: Looking to buy an older house - questions on the electrical system..
You didn't mention what the main fuse is rated. If it is 100 amps there are a few things you might want to take into consideration. Unless you are planing to upgrade to commercial equipment in the kitchen and the house has electric heat, the 100amp service is generally more than enough for a normal sized house.
Breakers are no more safe than fuses, they are just more convenient.
90% of the small appliances you use in a home have 2 pronged plugs so having a ground bond in the outlet will provide little additional safety. Replacing with GFCI receptacles will provide you with a modicum of safety.
If the ground electrode is installed and bonded, installing individual circuits to sensitive electronic equipment like computers and some TVs may be all that is needed.
Be sure you live your life, because you are a long time dead.-Scottish Proverb