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Recent content by mjosbesh

  1. M

    Choosing Wire Gauge

    If I need to run 12VDC 20A through a 20 foot cable how do I choose my wire? Is there a calculator to help me decide the gauge and/or other properties? If i find I need 14 Gauge wire does it matter if it is 14 Gauge "speaker" wire or "Power" wire? Finally, any recommendations for good wire and...
  2. M

    Building code: Recessing aluminum PS in a wall

    1) If I recess an aluminum power supply inside the wall in my house I believe it needs to be inside an enclosure correct? I mean per electrical code and for general safety. 2) If so, any ideas where to get such an enclosure? Or search words that might get me what I need?
  3. M

    12V switch in series with two 12V DC motors & 24V power supply. Is this ok?

    Thank you @Gryd3 . I'd like to expand on my question. Assume the outside dimensions of the motor are identical regardless of voltage. 1) Does a 24V motor always spin faster than a 12V motor or can a 24V motor be manufactured so it spins at the same rpm as the 12V 2) Is a 24V motor more...
  4. M

    12V switch in series with two 12V DC motors & 24V power supply. Is this ok?

    Thanks. I did some testing. I currently have a 12V30A power supply and 48V7.5A power supply here so I used them to test the motors. I have the two motors (connected to linear actuators) installed in a testing rig which applies 2500N of resistance force independently to each actuator. So...
  5. M

    12V switch in series with two 12V DC motors & 24V power supply. Is this ok?

    I have two identical 12V DC motors working together on either end to move an object. I'm considering wiring them in series so if there's an issue both motors will stop. I have a 24V power supply and a 12V 2 channel switch to control the motors. So my question is if I wire the 12 V switch in...
  6. M

    2 motors pushing an object. 1 motor goes bad... other keeps going... object breaks???

    I'm sorry, I am still confused and maybe it is because I am calling a power adapter a power supply??? I didn't realize there is a difference but what I have looks similar to a laptop power adapter but it is 12VDC 7.5A with a positive and negative wire coming out the DC side.
  7. M

    2 motors pushing an object. 1 motor goes bad... other keeps going... object breaks???

    I tried putting the two 12V power supplies in series and parallel. Parallel worked but series didn't. Not sure why
  8. M

    2 motors pushing an object. 1 motor goes bad... other keeps going... object breaks???

    Thank you for the info but I'm sorry I don't fully understand what you mean by floating. Can you explain a little more?
  9. M

    2 motors pushing an object. 1 motor goes bad... other keeps going... object breaks???

    I have two 12 V 7.5 A power supplies. Can I connect them together to get a 24 V 15 A power supply? If so do I connect them in parallel or series?
  10. M

    2 motors pushing an object. 1 motor goes bad... other keeps going... object breaks???

    These motors are attached to linear actuators and the 7 A is the max when the actuator is fully loaded and nearly stalls.
  11. M

    Is this actuator really 12VDC? Could it be 24V?

    Thanks for mentioning this. I did Test 2 at the actuator end but without the actuator attached. I had already cut the original 4 ft extension i had the problem with (i think there was a bad connection) but I just did Test 1 and Test 2 again w/ the actuator attached and loaded with 2000N...
  12. M

    2 motors pushing an object. 1 motor goes bad... other keeps going... object breaks???

    Up to 7 amps for each motor Yes, I was wondering about this possibility. Would the current and voltage be exactly the same for both motors if I wire them in series? Also, If each motor requires 12 V and up to 7 amps would I need to double both the Voltage and the Amps of the power supply?
  13. M

    2 motors pushing an object. 1 motor goes bad... other keeps going... object breaks???

    I have two 12V DC motors working together to move an object. If one motor goes bad or loses connection I want the other motor to stop. Currently I use a 4 amp fuse on each motor to achieve this. If one motor has a problem the other motor encounters increased load and blows the fuse. This...
  14. M

    Is this actuator really 12VDC? Could it be 24V?

    I've attached the MFG spec sheet. My actuator is 12V, 7 MM/S, 2500 N push force. I just ran a couple tests and my results are different from the spec sheet. I have the actuator set up to lift 2000 N. Test 1: Checking the power supply V. Result: I have multiple 12V power...
  15. M

    Is this actuator really 12VDC? Could it be 24V?

    Thank you. I will do the testing as suggested. I will also gather some more specs and post them.
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