Call us at 1-800.562.7797 or use our Contact Form

Showroom Open 8:00am to 4:30pm M-F PST

USPS International Services are experiencing delays.  International Priority mail is currently taking 4+ weeks.
According to all the shipping carriers no packages, including overnight, have a guaranteed delivery date.
SMS will not be held financially responsible for delays.
 
  • CurrencyUS
    • En
      0 items $0.00
      • Login Logout
      • Account
      • Re Order
      • Quick Buy
      Logged in as:   
      Call us at 1-800.562.7797 or use our Contact Form

      Showroom Open 8:00am to 4:30pm M-F PST

      USPS International Services are experiencing delays.  International Priority mail is currently taking 4+ weeks.
      According to all the shipping carriers no packages, including overnight, have a guaranteed delivery date.
      SMS will not be held financially responsible for delays.
      • Welcome
      • Shopping Cart
      • My Account
      • Heat
      • Cool
      • Galley
      • Hardware
      • Electrical
      • Info
      • Shop
        Info > Wire Size Charts > 

        Categories

        Heat
        Cool
        Galley
        Hardware
        Electrical
        Info
        Catalogs
        Manuals
        Webasto Marine Dealers
        Wire Size Charts
        Line Card
        Recall Notices
        Sure Marine's Response to the Coronavirus
        Shop
        Sort by Name Sort by Price

        Wire Size Charts

        Voltage Drop - Conductors used for panelboard or switchboard main feeders, bilge blowers, electronic equipment, navigation lights, and other circuits where voltage drop must be kept to a minimum, shall be sized for a voltage drop not to exceed three percent. Conductors used for lighting, other than navigation lights, and other circuits where voltage drop is not critical, shall be sized for a voltage drop not to exceed 10 percent.

        Conductor Size - To determine conductor size use TABLE IX or  TABLE X.  Check the conductor size for compliance with the maximum allowable voltage drop.  In the event of a conflict between the ampacity table and the voltage drop tables, the larger conductor size shall be used.

        To use TABLE IX and TABLE X, measure the length of the conductor from the positive power source connection to the electrical device and back to the negative power source connection in feet.  Use the conductor length, the system voltage, and the ampacity, in conjunction with the appropriate volt drop table, i.e., 3 percent or 10 percent – TABLE IX or TABLE X, to determine conductor size.
        .



        Table IX From ABYC E11 - CONDUCTORS SIZED FOR 3 PERCENT DROP IN VOLTAGE

        Note: In the event of a conflict between the voltage drop table and the ampacity table, use the larger wire size.

        Length of Conductor from Source of Current to Device and Back to Source - Feet

        10 15 20 25 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170
        TOTAL
        CURRENT
        ON CIRUIT
        IN AMPS


        12 Volts - 3% Drop Wire Sizes (gauge) - Based on Minimum CM Area
        5 18 16 14 12 12 10 10 10 8 8 8 6 6 6 6 6 6 6 6
        10 14 12 10 10 10 8 6 6 6 6 4 4 4 4 2 2 2 2 2
        15 12 10 10 8 8 6 6 6 4 4 2 2 2 2 2 1 1 1 1
        20 10 10 8 6 6 6 4 4 2 2 2 2 1 1 1 0 0 0 2/0
        25 10 8 6 6 6 4 4 2 2 2 1 1 0 0 0 2/0 2/0 2/0 3/0
        30 10 8 6 6 4 4 2 2 1 1 0 0 0 2/0 2/0 3/0 3/0 3/0 3/0
        40 8 6 6 4 4 2 2 1 0 0 2/0 2/0 3/0 3/0 4/0 4/0 4/0 4/0 4/0
        50 6 6 4 4 2 2 1 0 2/0 2/0 3/0 3/0 4/0 4/0




        60 6 4 4 2 2 1 0 2/0 3/0 3/0 4/0 4/0 4/0





        70 6 4 2 2 1 0 2/0 3/0 3/0 4/0 4/0







        80 6 4 2 2 1 0 3/0 3/0 4/0 4/0








        90 4 2 2 1 0 2/0 3/0 4/0 4/0









        100 4 2 2 1 0 2/0 3/0 4/0










        .



















        Length of Conductor from Source of Current to Device and Back to Source - Feet

        10 15 20 25 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170
        TOTAL
        CURRENT
        ON CIRUIT
        IN AMPS


        24 Volts - 3% Drop Wire Sizes (gauge) - Based on Minimum CM Area
        5 18 18 18 16 16 14 12 12 12 10 10 10 10 8 8 8 8 8 8
        10 18 16 14 12 12 10 10 10 8 8 8 6 6 6 6 6 6 6 6
        15 16 14 12 12 10 10 8 8 6 6 6 6 6 4 4 4 4 4 2
        20 14 12 10 10 10 8 6 6 6 6 4 4 4 4 2 2 2 2 2
        25 12 12 10 10 8 6 6 6 4 4 4 4 2 2 2 2 2 2 1
        30 12 10 10 8 8 6 6 4 4 4 2 2 2 2 2 1 1 1 1
        40 10 10 8 6 6 6 4 4 2 2 2 2 1 1 1 0 0 0 2/0
        50 10 8 6 6 6 4 4 2 2 2 1 1 0 0 0 2/0 2/0 2/0 3/0
        60 10 8 6 6 4 4 2 2 1 1 0 0 0 2/0 2/0 3/0 3/0 3/0 3/0
        70 8 6 6 4 4 2 2 1 1 0 0 2/0 2/0 3/0 3/0 3/0 3/0 4/0 4/0
        80 8 6 6 4 4 2 2 1 0 0 2/0 2/0 3/0 3/0 3/0 4/0 4/0 4/0 4/0
        90 8 6 4 4 2 2 1 0 0 2/0 2/0 3/0 3/0 4/0 4/0 4/0 4/0 4/0
        100 6 6 4 4 2 2 1 0 2/0 2/0 3/0 3/0 4/0 4/0 4/0



        .




















        CM = Circular mil area of conductor.



        Table X From ABYC E11 - CONDUCTORS SIZED FOR 10 PERCENT DROP IN VOLTAGE

        Note: In the event of a conflict between the voltage drop table and the ampacity table use the larger wire size.

        Length of Conductor from Source of Current to Device and Back to Source - Feet

        10 15 20 25 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170
        TOTAL
        CURRENT
        ON
        CIRUIT
        IN AMPS


        12 Volts - 10% Drop Wire Sizes (gauge) - Based on Minimum CM Area
        5 18 18 18 18 18 16 16 14 14 14 12 12 12 12 12 10 10 10 10
        10 18 18 16 16 14 14 12 12 10 10 10 10 8 8 8 8 8 8 6
        15 18 16 14 14 12 12 10 10 8 8 8 8 8 6 6 6 6 6 6
        20 16 14 14 12 12 10 10 8 8 8 6 6 6 6 6 6 4 4 4
        25 16 14 12 12 10 10 8 8 6 6 6 6 6 4 4 4 4 4 2
        30 14 12 12 10 10 8 8 6 6 6 6 4 4 4 4 2 2 2 2
        40 14 12 10 10 8 8 6 6 6 4 4 4 2 2 2 2 2 2 2
        50 12 10 10 8 8 6 6 4 4 4 2 2 2 2 2 1 1 1 1
        60 12 10 8 8 6 6 4 4 2 2 2 2 2 1 1 1 0 0 0
        70 10 8 8 6 6 6 4 2 2 2 2 1 1 1 0 0 0 2/0 2/0
        80 10 8 8 6 6 4 4 2 2 2 1 1 0 0 0 2/0 2/0 2/0 2/0
        90 10 8 6 6 6 4 2 2 2 1 1 0 0 0 2/0 2/0 2/0 3/0 3/0
        100 10 8 6 6 4 4 2 2 1 1 0 0 0 2/0 2/0 2/0 3/0 3/0 3/0
        .



















        Length of Conductor from Source of Current to Device and Back to Source - Feet

        10 15 20 25 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170
        TOTAL
        CURRENT
        ON
        CIRUIT
        IN AMPS


        24 Volts - 10% Drop Wire Sizes (gauge) - Based on Minimum CM Area
        5 18 18 18 18 18 18 18 18 16 16 16 16 14 14 14 14 14 14 12
        10 18 18 18 18 18 16 16 14 14 14 12 12 12 12 12 10 10 10 10
        15 18 18 18 18 16 14 14 12 12 12 10 10 10 10 10 8 8 8 8
        20 18 18 16 16 14 14 12 12 10 10 10 10 8 8 8 8 8 8 6
        25 18 16 16 16 14 12 12 10 10 10 8 8 8 8 8 6 6 6 6
        30 18 16 14 14 12 12 10 10 8 8 8 8 8 6 6 6 6 6 6
        40 16 14 14 14 12 10 10 8 8 8 6 6 6 6 6 6 4 4 4
        50 16 14 12 12 10 10 8 8 6 6 6 6 6 4 4 4 4 4 2
        60 14 12 12 12 10 8 8 6 6 6 6 4 4 4 4 2 2 2 2
        70 14 12 10 10 8 8 6 6 6 6 4 4 4 2 2 2 2 2 2
        80 14 12 10 10 8 8 6 6 6 4 4 4 2 2 2 2 2 2 2
        90 12 10 10 8 8 6 6 6 4 4 4 2 2 2 2 2 2 1 1
        100 12 10 10 8 8 6 6 4 4 4 2 2 2 2 2 1 1 1 1
        .




















        CM = Circular mil area of conductor.

          Compare Products

           

          Sort by Name Sort by Price
          • Information

          • About Us
          • Delivery Information
          • Privacy Policy
          • Terms & Conditions
          • My Account

          • Overview
          • Order History
          • Re-Order Items
          • Profile
          • Get In Touch

          • Call us to ask any questions (800) 562-7797
          • Send us an email Contact Us
          • or Fax to (206) 784-0506
          • 5320 28th Avenue NW, Seattle, Wa 98107, USA

          Social

          Newsletter Sign Up

          © 2023 Sure Marine Service Inc

          Sure Marine Service, Inc.
          5320 28th Ave NW
          Seattle , WA , 98107
          (206)784-9903