Recent content by wilber

I am trying to research a test for ozone resistance. There is apparently a history of a white film forming on plastic jackets of cables exposure to ozone and sunlight at the same time. This is said to occur at Pulp and Paper mills. Does anyone have any experience with this? I would like to...

There are several superconducting projects using liquid nitrogen. For super conducting cables and current projects check out http://www.ultera.net.

Heavily shielded cables are use for airport lighting applications. The shielding is thought to help with failures due to lightning. check out http://www.mysouthwire.com This is advertised as "resistant", but not "proof"

During operation (and testing for approvals), lugs should always run "cooler" than the conductor. If a lug is at the same temperature or a higher temperature then a failure is bound to occur.

I am interested In cables made to IEC 227. The standard as available at IEC is apparently in Russian. The cable are made to a Chinese standard based on the Russian IEC 227. Does anyone know of a English version of this standard or a standard that it is equvalen towritten in English . The...

I have been asked if a Underwriter's Laboratories Type MC cable will compromise a A-60,H-60 fire-rating of bulkheads when making a multi-cable transit (MCT's) when passing through them. This job is on offshore platform project near Kuala Lumpur, Malaysia. I am familiar with "through...

For cables of the same diameter There is a factor 1 cable Factor is 1 7 cables the factor is 3 19 cables the factor is 5 37 cables the factor is 7 61 cables the factor is 9 Cables all of the same diameter, formed around a central single core follow the "rule of 6" the first layer is 6...

There is also a "Overhead Conductor Manual" book available from Southwire. http://www.mysouthwire.com/Southwire/cda/content/article/0,1443,121_691,00.html Is the table of contents you'll need to "sign in"

A good article on airport lighting cable can be found http://ecmweb.com/ar/electric_series_lighting_circuitry/index.htm

The temperature that the fiber optic member is trying to measure should be compared to the rated temp of the cable. That rated temp is assumed to be the temp of the metal conductor. So the closer you get to the conductor, the better. However the manufacturing techniques of the cable...

Be easy on me guys. I'm a Mechanical Engineer and I work for a wire manufacturer. Can the construction of a building enhance the performance of a cell phone. Can the placement of the normal power cables within a building enhance the performance of a cell phone. Is there an A&E or consultant...

There is an "overhead conductor manual" written by southwire http:/www.southwire.com

If you are wanting NOT to generate smoke in case of a fire, then don't use PVC. Investigate UL 1685 Standard for cables. This standard defines cables that pass the standard vertical ladder flame tests and carry an "LS" limited smoke rating. They are usually less dangerous fumes in...

Insulated cables are rated by a certain ampacity to keep the conductor and insulation at the rated temperature. End devices and conectors are usually rated at a temperature below the cables temp. Usually the rated temperature of the devices are 75C and the cable is 90C. Nothing delterious...

We have some literature at http://www.electricsmarts.com/catalog/catalog.aspx?rid=5&tid=7 There are also "catlog data sheets " at http://www.southwire.com We have both EPR and XLPE I'm at our technology center not the sales group.