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  • Users: madddog
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  1. madddog

    Temp Rise of an Insulated Copper Wire

    I need the equations that define the temp rise of a #10AWG insulated wire carrying 11.23 amps. I am designing an 10,00ft umbilical cable that will power two 150HP electric pumps. The heat rise per foot will determine the maximum number of layers on a cable reel, ie overall reel size. Thanks
  2. madddog

    Temp Rise of an Insulated Copper Wire

    This sounds pretty simple to you heat transfer qurus but to someone who doesn't do this on a regular basis, HELP. I need the equations to determine the temperature rise of an insulated #10AWG copper wire carrying 11.23 amps. I am designing an umbilical cable that feeds power to two 150 HP...
  3. madddog

    DAQ Boards from the ADAC Company

    I purchased a data acquisition board from the ADAC company. The board is a 5516DMA. Along with the board came software drivers written for LabView. I am running LabView 5.1. After loading their software I began to run several example .vi's. I have confirmed that the software (.ini, .con)...
  4. madddog

    Schematic / 4 or 8 Port Ethernet Switch

    Can anyone lead me to an internet site that has a schematic of a 4 or 8 port Ethernet switch. Thanks
  5. madddog

    4-20mA sensor measured at two locations

    Normally the return wire of a 4-20mA sensor terminates with a 100 ohm resistor at the input to a data acquisition system. My question is can you have two return wires each terminated with a 200 ohm resistor monitored by two data acquisition systems. The parallel resistance would equal 100...
  6. madddog

    Has anyone had any experience with

    Has anyone had any experience with decreasing the electrical load of a residential HVAC system by using a varible voltage drive to control the speed of the compressor over the heat cycle of a day?
  7. madddog

    Temperature Measurment Over a Large Surface

    Can anyone give me some help. I want to measure the temperature of an airconditioning condenser coil. Since this is a large surface area I would like to take place eight thermistors around the top third and eight more around the bottom third. Since my data acquisiton system has limited I/O I...
  8. madddog

    Earthing Transformer

    Can anyone steer me to a manufacturer who can provide information, specs, application info, etc. for earthing transformers. Thanks
  9. madddog

    Resonance of a water molecule

    Where would I find the resonant frequency of a water molecule?

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