Menu
Search
The Wire and Cable Technical Information Handbook
The Wire and Cable Technical Information Handbook

Cable Armor

Cables often need to be placed in areas where they are subjected to harsh mechanical stresses. These stresses could damage the insulated conductors or the optical fibers in the cable if they are not properly protected.

Armor (usually a metal) is frequently applied over the cable core to provide this protection.

The armor extends the life, while improving the reliability, safety and performance of the cable core. The following are some frequently used armor types.

Interlocked Armor

Interlocked armor typically uses galvanized steel or aluminum.

However, other metals are sometimes used for specialized applications. The interlocking construction protects the cable from damage during and after installation. The armor may be applied directly over the insulation or over an inner jacket.

Materials and construction generally comply with the requirements of UL, CSA and/or ICEA.

Table 5.1– ICEA Recommended Thickness of Interlocked Armor
Table 5.1– ICEA Recommended Thickness of Interlocked Armor

Continuosly Corrugated and Welded (CCW)

CCW armor is made by forming an aluminum strip into a circle along its length and then welding it at the seam. This smooth tube is then rolled or crimped to form ridges to prevent kinking while bending (see Fig. 5.1 below).

Figure 5.1 - Continuously Corrugated and Welded (CCW) Armor
Figure 5.1 – Continuously Corrugated and Welded (CCW) Armor

This type of sheath provides an impervious seal against moisture and other chemicals as well as physical protection.

Title:The Wire and Cable Technical Information Handbook – Anixter
Format:PDF
Size:2.2 Mb
Pages:313
Download:Right here | Get Download Updates | Get Technical articles
The Wire and Cable Technical Information Handbook
The Wire and Cable Technical Information Handbook

Shape Up Your Knowledge //

Want to be a better electrical engineer? Subscribe to professional technical articles. Sharpen up your knowledge in field of electrical engineering now!

Subscribe Now

Page edited by E.C. (Google).

2 Comments


  1. rahim
    Jun 10, 2016

    Hello
    I want to twist 2 wires at the ends to increase the wire size because I have voltage drop for my solenoids.
    Does it work ? How can I calculate voltage drop ? 24 vdc nominal current for each solenoid valve 360 ma and distances are various .

    Kindly send reply by email


  2. SHIVJIBHAI bhikadia
    Jan 26, 2015

    Unarmered 1core 185 SQ. copper cable capacity to draw current more than half as 400 sq. Copper cable, why? And more over May we use two run parallel of 185 sq. mm Copper cable in the place of single run of 400 sq. mm? Is there any induction effect arise in two parallel cable in in armoured cable.

Leave a Comment

Tell us what you're thinking... we care about your opinion!

Time limit is exhausted. Please reload CAPTCHA.