What size gas pipe is needed to supply this gas range if all 4 burners and oven are being used at the same time ? 1/2" or 3/4"? null

Question

LG Digital Customer Care · Accepted Answer

A flexible metal appliance connector used to connect the range to the gas supply line should have an I.D. of 5/8" and a maximum length of 5 feet. 
To protect against gas leaks, use a qualified pipe joint sealant on all external threads.
1 Install a male 1/2" or 3/4" flare union adapter to the NPT internal thread of the manual shut-off valve, taking care to back-up the shut-off valve to keep it from turning.
2 Install a male 1/2" flare union adapter to the 1/2" NPT internal thread at the inlet of the pressure regulator. Use a backup wrench on the pressure regulator fitting to prevent damage ^CP

“What size gas pipe is needed to supply this gas range if all 4 burners and oven are being used at the same time ? 1/2" or 3/4"?”

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