David Wilson wrote:
I have seen US voltages listed as 110, 115, 117 and 120VAC. Is any one of these the "official" voltage?
Not really. Much depends on your locale and the power distribution in your area. Most equipment is designed for 110-120v nominal, with 5%-10% tolerance, so saying 115v +/-10% is close enough. A wider tolerance covering 100-130v would cover most of the wierdness that can happen with grid surges and brownouts. -michael Music synthesis for 8-bit Apple II's! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it is seriously underused."