The Texas Dept. of Licensing and Regulation (TDLR) has a "Residential Appliance Installer Contractors License".
From the Frequently asked questions on TDLR's website:
22. When is a Residential Appliance Installer license required to attach an appliance power cord on a clothes dryer, oven/range, or other residential appliance?
A Residential Appliance Installer license is always required when an appliance power cord is being attached in a home or other residential (single or multi-family dwelling less than four stories) installation site. If the appliance power cord is installed at the manufacturing plant or the shop of an authorized manufacturer's representative, then no license is required. Also, there is an exemption for homeowners who reside in the home to do the work if the electrical work is not regulated by city ordinance.
Of course, you can hire an EC if you want to. I think we are installing them on a current "extended stay hotel" remodel
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