"Nexus7" wrote in message
oups.com...
I've come across some wire that is probably 30 years old and is marked
14 gauge. The minimum gauge I want snaking around the house is 12
gauge, so I was about to pull it out when I noticed that the copper is
about as thick as new 12 gauge (and thicker than new 14 gauge). Is the
copper thinner now because of improvements in the manufacturing
process, or something? Is the wire rated by thickness or by current
carrying capacity? If it is current carrying capacity, then are they
using thinner wire because newer copper is a better conductor? This
isn't the plastic insulation I'm talking about, it's about the copper
itself.


12 gauge can be a bitch to work with, especially when you need to cram it
behind the switches in boxes that aren't big enough. Are you sure you want
it running EVERYWHERE in the house?