Amazon.com: TOOLIOM 30 Amp to 110 Volt RV Adapter, NEMA 5-15P Male to NEMA TT-30R Female Heavy Duty 10/3 STW RV Power Adapter with Handle,12 Inch 15 Amp to 30 Amp RV
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Amplifier wire gauge chart
What size of cable can handle 30amps current? - Quora