Hi YW,
Thank you for reaching out and we hope you are in good health. We appreciate your interest in Samsung home appliances, specifically with Samsung - 6.3 cu. ft. Freestanding Electric Range with Rapid Boil™, WiFi & Self Clean - Stainless steel
A 4-Wire Cord or 3-Wire Cord (UL Approved 40 or 50 AMP). I have shared the installation guide below. Please access the link and turn to pages 1, 4 - 6 for the electrical requirements and installation of the power cord.
https://downloadcenter.samsung.com/content/EM/202103/20210317173816090/Install_NE63A6711_DG68-01359A-00_EN-MES_210104.pdf
Please feel free to communicate with us through the channels below if you have additional questions.
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.community.samsung.com/t5/Samsung-Community/ct-p/us
Your reference number: 1144593718
Leo