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What Size Wire for 200 Amps at 200 Feet?

At 200 ft, the default 200 A answer is the last published plateau before the 250 ft voltage-drop jump: 3/0 AWG copper or 250 kcmil aluminum still holds under these assumptions.
Load
200 A
Distance
200 ft
Band
200 A feeder / service
Defaults
Non-continuous, 75 C lugs, 86 F, 240 V single-phase

Computed Starting Point

Ampacity and voltage drop under common defaults for this amp and distance.

MaterialComputed sizeOCPDUsable ampacityGoverning constraintDefault check
Copper3/0 AWG200 A200 ATermination rated 75 CPasses defaults
Aluminum250 kcmil200 A205 ATermination rated 75 CPasses defaults
What Size Wire for 200 Amps at 200 Feet? under common non-continuous defaults: THHN or XHHW-2 insulation, 75 C terminations, 86 F ambient, 240 V single-phase and no more than three current-carrying conductors.

What 200 ft ChangesAt 200 ft, the page is a boundary result. It still returns 3/0 copper or 250 kcmil aluminum under the stated defaults, but the next 50 ft changes the sizing. Treat this as a final route-confirmation page before buying from the shorter-run platform.

Run the wire size calculatorCheck voltage drop alone

Zero-Length vs This Distance

If the distance-adjusted size is larger, voltage drop governed under these defaults.

CaseCopper sizeCopper constraintAluminum sizeAluminum constraint
Ampacity only (0 ft)3/0 AWGTermination rated 75 C250 kcmilTermination rated 75 C
200 ft (this page)3/0 AWGTermination rated 75 C250 kcmilTermination rated 75 C
Copper and aluminum sizes for 200 A with no distance entered versus 200 ft one-way.

Adjacent Distances at This Amp

Neighboring published lengths for 200 A under the same defaults.

DistanceCopper sizeAluminum sizeCopper constraint
150 ft3/0 AWG250 kcmilTermination rated 75 C
200 ft (this page)3/0 AWG250 kcmilTermination rated 75 C
250 ft4/0 AWG300 kcmilVoltage drop
200 A copper and aluminum starting sizes across neighboring distance pages.

200 ft Is the Last Short-Platform Page

200 A feeder / service context for 200 A at 200 ft.

A 200 ft 200 A route is a serious feeder or service-planning distance: detached shop, large ADU, remote panel, or long service-equipment relocation. Material choice and utility/AHJ approval are now part of the decision.

Under the defaults on this page, the conductor result still matches 100 ft and 150 ft. The important distinction is that 200 ft is the last published stop before the 250 ft page moves to larger conductors for voltage drop.

What Changes This Long-Run Answer

Checks that matter for distance-governed sizing in this amp band.

  • Do not guess between 200 and 250 ft

    If the measured path is uncertain, compare both pages. Under these defaults, 200 ft holds the platform while 250 ft jumps to larger conductors.

  • Confirm raceway and termination together

    Even without a drop upsize, 3/0 copper and 250 kcmil aluminum need equipment lugs, bend space and raceway planning that match the installed product.

  • Recheck actual load current

    Voltage drop follows current. If 200 A is a panel rating rather than the sustained design load, rerun the calculator with the expected load.

  • Keep utility/AHJ constraints visible

    A 200 A service-related run can be constrained by the utility, meter equipment and local practice beyond this planning result.

200 A at 200 ft FAQs

What size wire for 200 amps at 200 feet?
Under the defaults on this page, start with 3/0 AWG copper or 250 kcmil aluminum. It remains the same platform as 100 ft and 150 ft.
Why does 250 ft change the 200 A wire size?
Under these defaults, 200 ft is still termination/product governed, while 250 ft becomes voltage-drop governed and moves to larger conductors.
Can I use the 200 ft result if my route may be longer?
Only after measuring the one-way conductor path. If the final route approaches 250 ft, use the 250 ft page or the calculator before ordering.
Is this for service entrance or feeder conductors?
It is a starting point for a 200 A conductor under the page defaults. Service conductors can add utility and equipment constraints; feeders still need project load and raceway verification.