Marine Electrical Wire Size Calculator

In addition the dc wire selection chart shown below assumes a wire insulation rating of 105 c.

Marine electrical wire size calculator. Our calculator yields results that are within code in most locations however we advise you to check your local electrical code. Please check with your electrical inspector or a licensed electrician for the proper wire size. For ac use only the first calculator is needed as the voltage drop in ac circuits as a function of wire lengths found in a boat is negligible. In the boating world it is suggested 3 max voltage drop for conductors providing power to panels and switchboards navigation lighting bilge blowers main dc feeders and any other circuit where.

Note that most so called marine grade wire is rated at 105 c. The wire size calculator will give you a very simple and quick solution to the problem of calculating the size of wires and cables for pump applications in golf courses landscape projects and agriculture. When selecting a wire for dc use both calculators must be applied. This technical brief distills the information on these charts to a more manageable size for installers and boatowners alike.

And the calculator providing the largest wire is the required wire. A sample of 120 volts single phase copper wire 144 feet one half of a 288 foot circuit with 10 amps load on it yields a number 10 awg wire size. This should be used as a reference only. Electrical wire size calculator.

Nfpa 70 national electrical code table 310 15 b 16 17. Now you can take the advantage of this calculator to do this job j you can also check the classical wire cable size calculator in awg calculating wire cable size formula for single phase circuits. There are many factors to consider before choosing the proper gauge. This wire size calculator will calculate the appropriate wire gauge for a circuit based on amps voltage distance and load.

The requirements of the national electrical code nec and local codes must always be followed. Under no circumstances should this calculator be used as the sole basis for selecting wire size or circuit protection. Finally note that the amp capacity ampacity of the wire curtails using very short lengths of wire for large current flows as shown by the flat tops of the 10 chart areas. This website provides a wire size calculator voltage drop calculator wire ampacity charts and more.

This calculator is not a substitute for the expertise of a marine electrical professional. Quality marine wire as specified by abyc standards will always be stranded rather than solid and always tin plated copper.