Power Cable

Discussion in 'Recording/Live Sound' started by LPcreation, Feb 22, 2015.

  1. LPcreation

    LPcreation Member

    Messages:
    52
    Joined:
    Mar 22, 2012
    Location:
    State College PA
    Hi,

    I'm not sure where to put this question, but I figured this is the most appropriate place. I lost a power cable to an amp, and I'm not sure if I can use any 3 prong computer cable to power it.

    It looks like the amp says 120VAC, 60Hz, 300 watts.

    I have multiple cables,
    1 - 15a 125v
    1 - just says 300v
    1 - 10a 125v
    1 - doesn't say anything that means anything to me SJT 18AWGX3C

    Is there a general rule? Anyone?

    Thanks!
     
  2. Campfired

    Campfired Gold Supporting Member

    Messages:
    15,679
    Joined:
    Jun 9, 2006
    Location:
    Nutmeg State
    For higher wattage, its appropriate to use a thicker EIC gauge power cable. The thinner ones might pose a fire hazard with a 300W amp.
     
  3. Rex Anderson

    Rex Anderson Member

    Messages:
    4,779
    Joined:
    Apr 25, 2009
    Location:
    Las Vegas, NV
  4. LPcreation

    LPcreation Member

    Messages:
    52
    Joined:
    Mar 22, 2012
    Location:
    State College PA
    Thanks guys. I have one that is 3x14AWG, so that one will be the winner. Agree?

    Do I need to worry about matching anything? Thanks again, I really appreciate it.
     
  5. Rex Anderson

    Rex Anderson Member

    Messages:
    4,779
    Joined:
    Apr 25, 2009
    Location:
    Las Vegas, NV
    Sounds like you are good to go with a 14 gauge IEC power cable. No matching of anything required. Actually, I'm not sure what you are referring to. What would need "matching"?
     
  6. LPcreation

    LPcreation Member

    Messages:
    52
    Joined:
    Mar 22, 2012
    Location:
    State College PA
    Thanks Rex! I didn't know if I need to try and match the "V" or the "A" on the cables to the amp.

    Similar to how I need to match ohms on a head to cab.
     
  7. LPcreation

    LPcreation Member

    Messages:
    52
    Joined:
    Mar 22, 2012
    Location:
    State College PA
    In other words, the only big rule is the higher the wattage the amp, the lower gauge cable I should use. Does that sound like the general idea?
     
  8. Rex Anderson

    Rex Anderson Member

    Messages:
    4,779
    Joined:
    Apr 25, 2009
    Location:
    Las Vegas, NV
    Correct. Lower wire gauge, thicker cable, handles more amps, less resistance.

    18 gauge, too thin. 16 gauge, pretty common. 14-12 gauge, about as big as you can go. Beyond that, it's just to fat.

    Power cable and speaker cable are very similar, gauge wise.
     

Share This Page