On 08/08/2017 08:12 AM, Paul Groves wrote:
We are still at 240V but the law in the UK is 230V +10% maximum (253V) -5% mimimum (218.5V)
I personally think 240 makes more sense as it would always require an even number of turns on the transformer. Also, especially in pre-calculator days as it is divisible by 12 so easy to calculate. (e.g. 240v to 12v is a 20:1 transformer). Simple eh..
That ignores a real factor in power distribution, line loss. As you get further from the source,the line voltage will decrease. This can be compensated for, to a degree, by using taps on the transformer. But even then, changing loads will cause changing voltage. This is why the voltage drops at peak demand times. So, everything is designed for nominal voltages, with the expectation there will be variations. -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org