When dealing with site lighting, I have a situation with a rather smaller lighting load yet the distance is requiring a heavy conductor. The fixtures are at 208V 1-phase. If I were to fuse each fixture at the base, can the breaker be larger than 20A? Where in the code is this allowed? I don't want to do a 3-phase circuit if anybody was thinking that.
In addition, say the conductor is #6, this obviously won't work with a 20A CB due to lug size. So, with multiple site lighting circuits, a contactor would be used. from the fixtures to the contactor, this would be #6, but then from the contactor to the breaker, could this be #10 or #12? I know this short piece of conductor would see the voltage drop as well, but at some point, I would have to make the conductor small enough to fit under the breaker lug.
In addition, say the conductor is #6, this obviously won't work with a 20A CB due to lug size. So, with multiple site lighting circuits, a contactor would be used. from the fixtures to the contactor, this would be #6, but then from the contactor to the breaker, could this be #10 or #12? I know this short piece of conductor would see the voltage drop as well, but at some point, I would have to make the conductor small enough to fit under the breaker lug.