How do I measure AC/DC current with the Innova 3320?
Plug RED test lead into mA or DC10A jack and BLACK test lead to COM. Set Selector Switch to desired Amps range position (0-200mA for low current, 200mA-10A for high). Disconnect battery/power of circuit. Place RED on disconnected wire, BLACK at disconnect point. Reconnect power after measurement.
From the official Innova 3320 manual, page 8
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