really simple plug/receptacle question

Discussion in 'Electrical Forum discussion & Blog' started by beekerc, Dec 3, 2008.

  1. beekerc

    beekerc IT Consultant / Network Engineer

    Messages:
    94
    Location:
    Seattle
    the answer will be obvious to those who work with locking plugs, but this is my first foray into this area. i'm installing a 30A circuit with an L5-30R twist lock receptacle to support a new UPS for my server rack (yes, the one that keeps tripping the GFCI device). Until i actually get said UPS, i'm looking for a cheap PDU (power distribution unit) that had 5-20R/5-15R receptacles. I found a couple but they have an L5-20P plug on it. can i use this plug in my L5-30R receptacle? common sense says yes, it would be just like plugging a 5-15P into a 5-20R. i'm guessing there's are more than a few people here who use the locking type plugs/receptacles on a daily basis who would know for sure.
    Thanks
    BeekerC
  2. mattbee24

    mattbee24 In the Trades

    Messages:
    100
    Location:
    Fremont, OH
    Twist Locks Are not the same as straight blades. Each receptacle will only accept the corresponding male. The PDU you are looking at is only rated at 20 amps. You could just buy an L5-20R Receptacle and use that until you are ready to get the UPS.
  3. beekerc

    beekerc IT Consultant / Network Engineer

    Messages:
    94
    Location:
    Seattle
    good to know. thanks.
    easy enough, except for the fact that locking recep's are not cheap.
    maybe i'll find a straight bladed PDU as I have the 20A circuit that I originally ran for the servers already wired.
  4. Mikey

    Mikey Aspiring Old Fart, EE, computer & networking geek

    Messages:
    2,736
    Location:
    Central Florida
    There's an APC AP9560 (Input L5-30P, output (10) 5-20R) on that famous auction site for $25. He's got 10 of them.
  5. beekerc

    beekerc IT Consultant / Network Engineer

    Messages:
    94
    Location:
    Seattle
    plug/receptacle question

    thanks for the tip. i have been looking there, but all were selling for $75 more. dont' know how this one escaped my radar.
  6. Mikey

    Mikey Aspiring Old Fart, EE, computer & networking geek

    Messages:
    2,736
    Location:
    Central Florida
    Things like this come & go pretty quickly. These seem to be an especially good deal. I've bought a lot of Cisco gear and peripheral stuff like these PDUs over the years; saved a lot of money and never had a problem. In retrospect, a lot of the Cisco stuff was probably grey label, but it did the job.
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