Need cable to get power between 2 units

Discussion in 'The Projects Forum' started by bluesguitar03, Jan 14, 2011.

  1. bluesguitar03

    Thread Starter Member

    Jul 19, 2008
    I have a project I'm working on that I can't seem to find the perfect cable for. I have 2 units. Unit 1 has a very capable power supply for the demand. It is a 44V 1A supply while the unit pulls roughly 200 mA. I have a second unit that I plan on powering from the same supply, just in a different enclosure. It will also pull about 200 mA max. I am looking for a cable to take the 44V DC from unit 1 to unit 2 to allow me to use a smaller enclosure and avoid the expense of a second supply.

    I really only need about a 2' cable and was thinking that a lamp cord style would be perfect. I want it to plug into jacks at both units so it won't require a cord dangling if it isn't being used, and also allows the option of extending the cable if necessary. I do want to avoid typical 2 or 3 prong wall plugs on both ends to make sure 120V AC isn't accidentally plugged in where it doesn't belong!

    Does anyone know of somewhere that I can find a cord along this lines as well as appropriate jacks? I'm ok with finding cable and plugs separately and assembling myself.

  2. Len Whistler


    Dec 10, 2010
    How about Cat5e with RJ45 connectors? Very cheap and easy to cut to any length.

  3. beenthere

    Retired Moderator

    Apr 20, 2004
    If you can find some BNC - BNC cables, use BNC bulkhead connectors. Almost bulletproof.
  4. John P

    AAC Fanatic!

    Oct 14, 2008
    CAT5 cables are good, but the jacks are a real pain to deal with, unless you can find the type with attached wires.

    I'd go with coax type power plugs and jacks, the kind that come on the end of wall-wart power supplies. You can probably find them at Radio Shack and they mount in a round hole (always a good feature) and you don't need any special tools to deal with them (another good feature). You do need to solder them, though.
  5. wayneh


    Sep 9, 2010

    They're purpose-built, cheap, easy to handle, and less prone to error because most folks understand that the little round hole is for power.
  6. bluesguitar03

    Thread Starter Member

    Jul 19, 2008
    I think this is the route that I'm going to go. The ease and availability can't be beat and I agree that everyone understands they're for power. The guy it is being built for will know and understand no matter how it's done, but just in case it gets loaned out or anything I want to make certain all my hard work doesn't go to waste!

    Thanks for all of your input!