Nayadic System GFCI Requirements

We have a Nayadic unit in our septic system. Recently the motor failed and was replaced. As part of that replacement the dealer removed the GFCI from the power circuit. I was told that they were removing the GFCIs from all the Nayadic units as they GFCIs kept failing.

This sounds somewha

The LHC to Shut Down… Again?

From Discovery News - Top Stories:

The epic start-up drama surrounding the world's most powerful particle accelerator just took another painful twist. Due to unforeseeable mistakes during construction, the Large Hadron Collider (LHC) will need to be shut down, for up to a year, sta

China Eyes Combustible Ice for Energy

From Discovery News - Top Stories:

Combustible ice sounds like it belongs in Star Trek--and from the photos it looks that way, too. While the reality isn't that extreme, this energy source does involve high-seas adventure, phase changes, and environmental quandaries.

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Probe Hints at Cosmic Dust

From BBC News | Science & Environment | UK Edition:

Scientists may have identified the first specks of interstellar dust in material collected by the US space agency's Stardust spacecraft. A stream of this dust flows through space; the tiny particles are building blocks that go

Counterfeit Fits?

From electronics to aerospace and automotive, bogus spare and replacement parts are an increasing problem and safety issue. The NSF International recently instituted a certification program that would ensure the safety of aftermarket structural metal auto parts, such as bumpers, energy absorbers, an

Ditch Drive-, Brake-, and Steer-by-Wire?

Toyota is actively recalling hundreds of thousands of vehicles and retrofitting or replacing floor mats, gas pedals, and brake assemblies. Jerry Flint, a longtime auto industry pundit, suggests that the problem might not be with the mechanical parts, but rather that software bugs are to blame for ru

Isolation Transformer

dear all

i want to ask one thing that we are going to purchse isolation transformer 250 kva ,now situation is that some one is saying that go for oil cooled because rating is high ,some one is saying that go for air cool because oil cool has a lot of chance of fire hazard

Common Water-Insoluble Powders to Use as Wick

Related to my heatpipe discussion, I'm looking for commonly available materials to use as a wick. Like a sugarcube on a spoon soaking up coffee. Except that since I'll probably be using water as my working fluid, the wick will need to be insoluble in water, as well as heat proof to a couple hundred

Testmasters Course for PE Electrical Power Exam?

I have been studying for the PE for the last couple of months. I got an email from Testmasters for a review for the PE that guarantees passing. My work won't pay for the course, which is $1600 and I have to take (4) vacation days, and spend (4) weekend days taking the course. I also will have to