I am doing Electrical Engineering. My viva is on day after tomorrow about cables and something else too. I will ask more questions also.
2006-08-13 02:04:38 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
can u try this
http://www.cableconsulting.net/index.htm
2006-08-13 02:40:49 · answer #1 · answered by sεαη 7 · 0⤊ 0⤋
Wow, a lot of information to answer this one...
First there are cables with single wire conductors, and cables with many wire conductors inside. So, one descriptive phrase has to do with "X" number of conductors. Good AC Power Cords are 3 Conductor, for example, to provide AC Hot, AC Return, and Green Wire Ground.
Then, depending upon the usage of the wire conductors, each wire will be either solid, or stranded, and some particular wire size. The solid conductors tend to make a cable rather stiff and hard to bend around corners, etc. Wire size requirements depend upon how much current in Amperes the given conductor (s) will carry. Wire sizes vary from thin "24" Gauge all the way to very heavy conductors like size "2" and "0." Even heavier conductors are "00", "000", and "0000." Those size cables are normally found in power generating stations and where large groups of batteries are used.
Finally, insulation is the last "major" factor to consider. The insulating capability of the material surrounding each conductor needs to be specified based upon expected usage. Also, some kind of enclosing insulation is applied to the bundle of wires within a given cable and its characteristics must be spec.'d also with regard to voltage, abrasion, moisture resistance, sunlight exposure (UV resistance), and oil/gas resistance.
So a complete description of all of those might be something like 12-3 AWG Marine Grade 600VDC/AC to denote a 3 conductor, # 12 AWG wire size, Oil/Gasoline resistant jacket for Marine service in ships/boats, and insulation capabilities suitable for 115 VAC/DC, 230 VAC/DC, and even 440 VAC/DC. For safety purposes I would prefer going to a heavier insulation when using 440 VAC/DC. Something on the order of 1000 Volt insulation might be more cautious safetywise.
I hope that this helps.
2006-08-19 19:59:02 · answer #2 · answered by zahbudar 6 · 0⤊ 0⤋
Read this book
Power System Analysis by John Grainger
2006-08-13 12:03:21 · answer #3 · answered by nima_iran_1985 3 · 0⤊ 0⤋
a person can't answer that question about cable. Need to know what the cable for. Is it for TV cable or what?
2006-08-13 09:13:51 · answer #4 · answered by rebel_southern_cableman2000 2 · 0⤊ 0⤋