240V Power Receptacles for Amplifiers

Discussion in 'Amateur Radio Amplifiers' started by KA4KOE, Mar 31, 2014.

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  1. KA4KOE

    KA4KOE Ham Member QRZ Page

    I finally got the KA4KOE Mad Scientist Lab and Winery cleaned up enough yesteday to where I can actually tell I have carpeting. I cut a hole in the drywall just below the shack 120/240V, 1 phase, 3 wire, 60A loadcenter. So, if all goes to plan I'll have the 240V outlet for my SB220 wired up this evening. I'm a total neophyte when it comes to amplifiers (but learning fast thanks to the mature and great advice here), but know a smidgen when it comes to house wiring. I'll post photos if anyone is interested in how to do this. Let me know.

    Philip KA4KOE


    Attached Files:

  2. M0PHE

    M0PHE Ham Member QRZ Page

    You ought to get yourself some British BS1363 plugs and sockets. 13 amps, fully shuttered, fused plugs, pins insulated half way. Safest there is.
  3. K0BG

    K0BG Platinum Subscriber Platinum Subscriber QRZ Page

    Philip, it is nice to know that you haven't lost your sense of humor!

    The above statement is a euphemism!
  4. KA4KOE

    KA4KOE Ham Member QRZ Page

    The problem is most folks don't get my humor. They just shake their heads.
  5. K0BG

    K0BG Platinum Subscriber Platinum Subscriber QRZ Page

    I tend to lean towards scatology when I lose my sense of humor.
  6. W1QJ

    W1QJ Ham Member QRZ Page

    You say you are using a 3 wire load center. Are you using BX? If you are using NMSC (Romex) you need 4 wires for a sub panel, which is what you are adding. Please explain what you are doing to be sure you are doing the sub panel correctly. Remember with a sub panel your neutrals and grounds have to be separated! Lou
  7. KA4KOE

    KA4KOE Ham Member QRZ Page

    Must have been a typo. Subpanel is a 60a loadcenter, 120/240V, 1 phase, 4 wire….Phase A, Phase B, Neutral, Ground. N-G bond inside service meter can. Main panel is 225A load center, 42 circuits. Service disconnect is 150A, 2 pole enclosed NEMA 3R circuit breaker downstream from service meter.

    Running a NEMA 6-20R outlet, Ph. A, Ph. B, Ground. No neutral needed for the amp outlet. No N-G bond at this panel either.

    Wired up the outlet right after I arrived home. Tests out okay.

    I'm having second thoughts about posting the photos as this will turn into a code discussion….Primarily wanted to demonstrate that wiring up a receptacle for an amplifier isn't really hard. I think my outlet took 45 minutes tops.
  8. K9FON

    K9FON Guest

    At least some hams have a sense of humor. Most take themselves too seriously...
  9. K8MHZ

    K8MHZ Ham Member QRZ Page


    Just how old is your code book???

  10. K0BG

    K0BG Platinum Subscriber Platinum Subscriber QRZ Page

    BX is allowed if the installation already has some BX. If it is a new install, no BX allowed.
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