Recent content by alan1981

  1. A

    Two wire instruments powered using two pair cable

    This installation is in the middle east so plenty of cable suppliers from different countries in the area. Its not a last minute decision to do the install like this, shown this way on the company standard typical drawings and project went through FEED design so plenty of time to order the...
  2. A

    Two wire instruments powered using two pair cable

    Agree, would have expected spare cores brought to earth as its Ex equipment in a hazardous area
  3. A

    Two wire instruments powered using two pair cable

    Correct, home run to JB is the longer run. 200meters approx. Jb to instrument less than 30 meters so volt drop on the home run is the dominant factor and not really an issue. Can't figure the benefit of using slightly larger cable from jb to instrument and terminating both pairs at instrument...
  4. A

    Two wire instruments powered using two pair cable

    Hello anyone else seen this? All twisted pair cables. Multipair home run cable from Junction box to marshalling cabinet 10 pair x .8mm2 cable Junction box to instrument 2 x 2 pair 1.13mm2 with both pairs connected in JB and instrument. Pair 1 used as positive and pair two used as negative...
See more
Top