Hi Nick. My comments are marked with ** At 11:50 AM 12/17/97 -0500, you wrote: >From: "Nick Evans" <[email protected]> >Subject: US supply Voltage questions > >I wonder if anyone can help me with a couple of practical questions concerning >USA supply voltages. > >1. Does anyone know what the normal maximum current rating is on a 110V >supply for a domestic socket outlet.
** The maximum allowable by the National Electical Code is 15Amps. That is to say that the socket outlet and its wiring are protected by a circuit breaker rated 15 Amps. For industrial purposes, the circuit breaker could be rated 20 Amps, or 30 Amps; this requires that you use special plug and special receptacle. > >2. Are there any situations (for example in commercial installations) where a >single phase supply of greater than 110V can (would normally be supplied)? If >so what would be the normal maximum current supply for this increased voltage. ** Commercial installations may derive the single phase supply from a 3-phase power distribution system. Therefore, a common voltage would be 208 V. The current at this voltage varies depending on the installation need. > >Thanks a lot for any assistance. ** Hope that this helps. > >Best regards > > >Nick Evans >Managing Director >Genesys IBS Ltd >Worldwide Product Compliance & Localisation >Tel: +44 1600 710300 >Fax: +44 1600 710301 >Mobile: +44 385 367348 (GSM) >E-mail: [email protected] (data transfer limit: 2Mb) >Web: Http://www.gentel.co.uk/genesys > > > > > >
