Authentic voices. Remarkable stories. AOL On Originals showcase the passions that make the world a more interesting place.
Go behind the scenes with some of the biggest digital celebrities to see what life is like when the blogging and tweeting stops.
The story of punk rock singer Laura Jane Grace of Against Me! who came out as a woman in 2012, and other members of the trans community whose experiences are woefully underrepresented and misunderstood in the media.
Documentary shorts conceived of and directed by famous actors. Jeff Garlin, Katie Holmes, Alia Shawkat, Judy Greer, and James Purefoy
Park Bench is a new kind of "talking show" straight from the mind of born and bred New Yorker and host, Steve Buscemi.
Digital influencer Justine Ezarik (iJustine) is back. After covering the world of wearable tech last season, iJustine is expanding her coverage this year by profiling the hottest tech trends across the country.
Enter the graceful but competitive world of ballet through the eyes of executive producer, Sarah Jessica Parker. This behind-the-scenes docudrama reveals what it takes to perform on the ultimate stage, the New York City Ballet. Catch NYCB on stage at Lincoln Center.
Nicole Richie brings her unfiltered sense of humor and unique perspective to life in a new series based on her irreverent twitter feed. The show follows the outspoken celebrity as she shares her perspective on style, parenting, relationships and her journey to adulthood.
Explore what it means to be human as we rush head first into the future through the eyes, creativity, and mind of Tiffany Shlain, acclaimed filmmaker and speaker, founder of The Webby Awards, mother, constant pusher of boundaries and one of Newsweek’s “women shaping the 21st Century.”
Gwyneth Paltrow and Tracy Anderson spend time with women who've overcome hardship, injury, and setbacks to triumph in the face of adversity.
Hank Azaria’s touching, humorous, and often enlightening journey from a man who is not even sure he wants to have kids, to a father going through the joys, trials and tribulations of being a dad.
ACTING DISRUPTIVE takes viewers inside the businesses and passion projects of Hollywood’s top celebrities.
Follow Scott Schuman, the Sartorialist, from the streets of NYC to the capitals of Europe on his quest to photograph and document the best in culture and fashion.
Learn how to calculate various (cable size, maximum demand, earth loop impedence, short circuit calculations, etc.) components ...
of an electrical installation.
Tags:How to Calculate Cable Size,cable calculations,cable size,circuit design,control wiring,earth loop impedence,electrical software,estimating program,maximum demand,power factor correction,voltage drop
Grab video code:
What we’re going to do is simple cable calculation using cable calc’s in solutions electrical software. First of which is a phases or number of phases, in this case we’ll use single phase. So simply give that cable an ID and it could be a number nine call it whatever you like and in that case so called nines. Now, you can have some additional info in here as well. I’ll call this office. I’ll go down further, your cable type, conducted type or we’re going to use Copper or Aluminum, we’ll just stick with copper. The voltage is 230 volts, permissible voltage drop on this particular circuit is 2.5%. But relying to that cable length we make that 47 meters the de-rating factor of one.
Up further the load in kilowatts or amps will select we say 87 amps. A cable type we’ll choose XLPE will it be singles or multi core, I would imagine in this case it will be singles. They have a little cable be installed. It will be above there, spaced, touching and conduit or partial insulated. Options of buried direct below ground or buried enclosed and also we have the option of aerial cables. We’ll select partial insulated, get three some ceilings and wall cavities.
Now actually measure what the program needs to calculate the size of the cable so it’s cable here and click calculate. We’ve been given a 35 millimeter squared cable. Let’s write it at 120 amps. A voltage drop of 5.29 volts at 2.3%, the cables do write it to 120 amps because it will be running out of time, maximum length of run here is 51 meters, you’ve seen length selected 47 meters over here.
Running at the ID 87.00 amps full live. The fault level of 5005 amps that’s the current that the conductive will actually handle and default conditions for one second before the insulation will actually break down.
The running temperature of full live will be 66.3oC, the second bracket size is 100 amps. From here we can also go on and calculate the earth loop impedance so we’ll just click on this one and you’ll see up here is going to stay at 35 no cable, one core in parallel. To choose circuit protection using we will use a circuit breaker, type C circuit breaker with a trip time of 0.4 seconds. It’s given us one fault conductor in parallel and that size happens to be 10.0 mm2 and copper of course.
Forty seven meters is the length thereon. So that’s the length and measure as well. We’ll just calculate on here and all your results displayed on this page makes my length to run but we can also close this page up and they’ll sign details will be relayed down here below the cable calculation result. And that’s how easy it is.