AS/NZS 5033

DC Cable Sizing

Calculate cable size for solar string and array cables with voltage drop checking.

For reference only — always verify with the current AS/NZS 5033 standard and consult a licensed solar installer or electrical engineer for critical installations.

String Cable

Cable from a single string of panels. Use Isc (short-circuit current) of one string.

DC Cable Inputs

String Isc (A)

Short-circuit current of one string

Cable Run Length (m)

One-way distance (positive or negative conductor)

System Voltage Vmp (V)

Maximum power point voltage of the string/array

Max Voltage Drop Limit

AS/NZS 5033 allows up to 3% for DC circuits

Cable Size

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