On 31/10/17 00:09, mad.scientist.at.la...@tutanota.com wrote: > > the issue is with plugging one thing, into another, into another and > then into the wall, most outlet strips are cheap, they don't use proper > sockets and often have/develop a significant resistance, which creates a > hazard etc.
In the UK at least also, we have ring mains. These are rated at 30 Amps, from which you can take a 13 Amp feed from any socket. Once you start taking power over multiple leads the wiring has more resistance, plugs introduce resistance, etc, and the voltage can drop rapidly. (It is mandatory, according to code, if you hard-wire a feed off a ring you must separate it with a 16 Amp fuse.) > > > There are actually multistage devices that can protect low voltage lines > (i.e. control lines on a transmitter tower) from a direct lightning > strike assuming they have a good enough ground connection. of course > it's likely to destroy the surge arrestor, which isn't cheap, but it > protects far more expensive equipment when it self sacrifices. > I've never seen one, but I would have thought a motor/generator pair with a hefty flywheel would provide very good surge/spike/whatever protection, and provide nice clean power. Plus, it would be unlikely to burn out if you had to provide protection from several big consecutive shocks, like a lightning strike. Cheers, Wol
