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These ratings on the data tag tell us exactly what minimum ampacity the circuit must be capable of carrying as well as the maximum size the circuit breaker or fuse may be able to protect the circuit against in an overcurrent condition.

In their best days (unfortunately behind them), they have merely LISTED an appliance. (Listing is currently their TOUGHEST CRITERION).

Window AC units blast for hours at time and use massive amounts of energy. An extension cord—and usually even sharing the circuit powering your AC with something else—overloads the wires. If they get too hot, the wires could short out and start a fire. Make sure the unit gets its own circuit, meaning a switch on your electrical panel dedicated to your AC and nothing else. Here are 11 more home safety risks and how to avoid them.

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One nice thing about the Sony A55 and A33′s electronic viewfinder is that the Fn menu is also available in the viewfinder display; you can make many camera settings without taking your eye from the viewfinder eyepiece. As I became more familiar with the camera’s controls, this led to a very efficient shooting style, although it would take more than the few days I’ve had with the camera thus far for this to become second nature.

For a TRIAC I bend the middle pin forward 0.1″ – 0.2″, this is often done commercially and you can even buy them pre-bent.

So it’s – what happens to this board at 110 Volts and what are the consequences and the same for 240V, 1000V 10000V, ALL of these voltages. So it’s about what voltage will cause consequences and NOT what it is going to do at a specific assumed voltage, or more to the point ** where are the first points of failure with increasing voltage and what are the consequences.

For something like this I would go to a proper electrical supplier and probably would use an AC contactor relay that’s rated twice the current. Sure a contactor needs a 24V transformer but it’s a small price to pay and the current use would be insignificant compared the the hot water heater.

Special features. The Sony Alpha A33 incorporates a variety of unusual features that have appeared previously in the company’s NEX and Cyber-shot series digital cameras, including Sweep Panorama, 3D Sweep Panorama, Auto High Dynamic Range, and Handheld Twilight modes. Each of these modes automatically captures several images, microaligns them, and then combines them into one image with attributes that couldn’t have been achieved in a single still.

I’ve thought about converting my Solidoodle 2 to 120v bed heating for ages now. I think it’s a good idea with a lot of benefits. I’ve been far to lazy to actually do it, however. Maybe one day I’ll get my act together. In the mean time I’ll just sit here and envy other people who have had the initiative to actually do it.

HVDC interties certainly simplifies some things (stability, voltage control, and frequency syncing & phasing is a non-issue), particularly in lines where their length approaches a quarter wavelength (which makes voltage control at the load end difficult). There are quite a few already: http://en.wikipedia.org/wiki/List_of_HVDC_projects and the list is growing rapidly.

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