The NEC and local utility requirements don't always agree. It is fairly common for the utility to require a minimum 100A service to single-family, duplex, and triplex residences these days. At four-plex, they require a house meter with safety bypass and lower the individual unit minimum to 60A.
Matt Lafferty -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Dave Click Sent: Friday, August 27, 2010 5:10 AM To: RE-wrenches Subject: Re: [RE-wrenches] minimum service 230.79(C): 230.79 Rating of Service Disconnecting Means. The service disconnecting means shall have a rating not less than the calculated load to be carried, determined in accordance with Part III, IV, or V of Article 220, as applicable. In no case shall the rating be lower than specified in 230.79(A), (B), (C), or (D). (A) One-Circuit Installations. For installations to supply only limited loads of a single branch circuit, the service disconnecting means shall have a rating of not less than 15 amperes. (B) Two-Circuit Installations. For installations consisting of not more than two 2-wire branch circuits, the service disconnecting means shall have a rating of not less than 30 amperes. (C) One-Family Dwellings. For a one-family dwelling, the service disconnecting means shall have a rating of not less than 100 amperes, 3-wire. (D) All Others. For all other installations, the service disconnecting means shall have a rating of not less than 60 amperes. -------- Original Message -------- Subject: [RE-wrenches] minimum service From: Marco Mangelsdorf <[email protected]> To: 'RE-wrenches' <[email protected]> Date: 2010/8/27 01:41 > I believe that there's a section the code that states that a residence > shall have a minimum 100A service. > > Can anyone tell me where that is? > > Thanks, > > marco _______________________________________________ List sponsored by Home Power magazine List Address: [email protected] Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
