Re: Should I rewire my 1957 home?
Surge suppressors work best with a ground to shunt excess voltage. However, if they have hot-to-neutral surge supression, you may be fine without the ground. Fancy surge suppressors with noise reduction circuits probably do require a ground.
The wiring in your 1957 home is probably rated at 60 degrees Celsius (that's the temperature above which the insulation begins to fail). Newer wiring is 105 degrees Celsius. For most parts of the circuit 60 degree wire is not a problem, but the wires in a ceiling J-box can be subjected to higher temperatures when a fully-enclosed light fixture is directly mounted to the J-box.
The NEC now requires that all light switch boxes contain a neutral wire, even if it's not going to be used. This is to support energy efficiency initiatives which often specify motion sensor switches which require a neutral wire. The idea is that somewhere down the road, someone may want to add an electronic switch. You won't be required to replace existing wiring unless you modify it. Most building departments require bringing all parts of a remodeled area up to current codes -- if you remove the wallboard and expose the wiring, you most likely will be required to upgrade the wiring while it is accessible.
The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.