We just got a new house(to us, built in 1930's), the house has been re-wired 6 years ago to 110amp service. My questions is as follows:
Putting in a new light fixture in ceiling, there are a total of 7 wires:
4 are same color, a braided weave(dark brown).
They are wired as follows:
1: Black wire capped
1: Copper wire
1: White wire capped with two other brown braided wires:
1: Brown wire capped
1: brown wire capped

I got a light fixture to work and distinguish which of the two brown capped wires is a live wire and which is nuetral.

My question is what are the other wires for?
There is only one switch box(1 dimmer and 1 on/off) I got the dimmer to work. I am going to use only the two brown braided wires and the copper, for a ground.
Any help would be appreciated.