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F <br /> I <br /> I <br /> t <br /> 2. Work performed under a homeowner's permit as indicated in Section R105.91. <br /> 3. I nstallation or replacement of domestic water heaters. <br /> r <br /> i <br /> 4. The installation, maintenance, extension or repair of processed drain systems, or <br /> piping, drains, drainage systems, or facilities for mechanical manufacturing, industrial <br /> processing refrigeration, heating, air conditioning, sprinkler or sprinkler system <br /> purposes, or parts, materials, devices or appurtenances in connection therewith or for <br /> the utilization or operation thereof, provided, however, final connection of any such , <br /> system or line to a water line containing potable water or to a drainage line containing <br /> any form of human waste shall be done by a licensed person as stated herein. <br /> i <br /> R191.3 Licensed contractors required to perform plumbing and drainlaying. No <br /> person who is not a licensed master plumber, a licensed journeyman, or a registered <br /> plumber apprentice working under the direction of a licensed master plumber shall <br /> engage in or perform any plumbing work with the exception of repairs which involve only <br /> the working parts of a faucet or valve; the clearance of stoppages; the installation of <br /> domestic water heaters; or the installation, maintenance, extension or repair of <br /> processed drains, processed drain facilities, processed drain systems, or piping, drains, <br /> drainage systems, or facilities for mechanical manufacturing, industrial processing, 1 <br /> refrigeration, heating, air conditioning, sprinkler or sprinkling system purposes, or parts, <br /> materials, devices or appurtenances in connection therewith or for the utilization or t <br /> operation thereof; provided, however, final connection of any such system or line to a <br /> drainage line containing any form of human waste shall be done by a licensed person f <br /> as stated herein. No person who is not a licensed master drainlayer shall engage in the f <br /> business of drainlaying. <br /> R191.4 Work by firms or corporations. Any firm or corporation engaged in the 5 <br /> business of plumbing shall employ a master plumber, registered as herein provided, as <br /> a responsible official and permit applicant. Any firm or corporation engaged in the <br /> business of drainlaying shall employ a master drainlayer, registered as herein provided, <br /> as a responsible official and permit applicant. <br /> l <br /> 5 <br /> (SECTION R192 ELECTRICAL CONTRACTOR LICENSE) <br /> R192.1 Application for electrical permit. All contractors applying for permits to <br /> perform electrical work governed by the scope of this Code shall be licensed and <br /> bonded by St. Louis County as a master electrician, and the contractor shall be f <br /> registered by the City of University City. i <br /> t <br /> , <br /> Exceptions: <br /> t <br /> 1. Work, repairs or installations that are specifically exempt from permit requirements. <br /> Last Printed:10/28/2013 6:01:00 PM • 9 of 16 Residential Code <br />