armoyr current

what happens if multiple earthing is done (2-3mtr)in 33kv single core 630sq.mm cable.circulating current get earthed at its nearest point.is it ok

Welding Machine Cables

Hi mates:

Do we have any regulations for the length of welding cables and the power cable supplied power to it? This is to avoid overheating the cables.

I am not sure about the welding cable but the power-supply cable shall be short and the size shall be adequate to the carry current.

Recycling Plastics

I'm curious (and a little surprised) at the various types/grades of plastic and ability to recycle them. My trash service gives me an extra can for recycled materials. For plastic they say they accept 1, 2, 3, & 5. I'm wondering what is 4, and we just found a 6, are there others? If I have a pla

Lauch Day Tomorrow

Mission/Orbiter: STS-131 / Discovery

Crew: Commander: Alan Poindexter, Pilot: James P. Dutton Jr, Mission Specialists: Rick Mastracchio, Stephanie Wilson, Dorothy Metcalf-Lindenburger, Naoko Yamazaki and Clayton Anderson. Crew bios here.

Note: There are only three scheduled shuttle missions remaining. For you near the launch site, you will see the ISS fly over about 15 minutes before the launch.

Current Status: Go

Launch Date: Monday April 5, 2010 06:21 EDT (10 minute window)

Odds of Launch: >80 percent.


Launch Pad 39A — Webcam Image courtesy: NASA/Kennedy Space Center

NOAA’s Forecast:

Tonight: Mostly clear, with a low around 66. East wind between 5 and 10 mph.

Monday: Sunny, with a high near 78. East wind between 5 and 10 mph.

To keep current with the news about the launch, take a look at NASA’s Launch Blog. Anna Heiney will be giving updates from inside Firing Room 3 at Launch Control. The launch blog will be live at 01:15 EDT. Be sure to refresh your browser to get the latest from that site.

You can catch the launch at NASA-TV

Engineer , President of Co.

I am looking for about 8 or 10 Small strong Torsion Sorings for a Medical related product. No more than one Inch Wide, three quarter inch deep, with whatever Shaft opening available per those specs.

700 post anniversary open thread | Not Exactly Rocket Science

I just noticed that last Wednesday’s piece on the movies of the dividing cells was my 700th proper post for Not Exactly Rocket Science! That includes opinion pieces, Not Exactly Pocket Science and the usual lengthy articles, but excludes reposts, photo posts or random missives. At the current pace, I’m averaging a respectable rate of around 100 posts every 5 months or so (the full list is here).

I always like to mark these moments as little milestones for myself. But enough from me. Over to you. This is an open thread. Say or ask whatever you like.