What are flexible cords?

What are flexible cords?

Flexible cords are used to connect electrical equipment to a power source. Flexible cords may have an electrical plug that connects to a power source or they may be permanently wired into a power source. Extension cords (cord sets), cables, and electrical cords are types of flexible cords.

What are the types of flexible cords?

Commonly used UL and CSA designations for flexible cable power cord include:

  • S = Severe Service (600 volt cords)
  • SJ = Junior Severe Service (300 volt cords)
  • E = Thermoplastic Elastomer.
  • OO = Oil-Resistant Outer Jacket and Oil-Resistant Interior Insulation.

What makes a flexible cable flexible?

Flexible cables, or ‘continuous-flex’ cables, are electrical cables specially designed to cope with the tight bending radii and physical stress associated with moving applications, such as inside cable carriers. These are sometimes called “chain-suitable,” “high-flex,” or “continuous flex” cables.

When can flexible cords be used?

In other words, flexible cords when used in temporary wiring may be run through doorways, windows, or similar openings provided they are protected from damage, but cannot be used as a substitute for the fixed wiring of a structure; run through holes in walls, ceilings, or floors; attached to building surfaces; or …

What’s the difference between a cord and a cable?

With regard to electrical cables vs cords, the tendency is to use “cord” for a collection of insulated wires intended to be handled frequently (as a lamp cord or the cord for your earphones), and to use “cable” for a relatively fixed connection (as the wires in your walls or the cable connecting your TV to “cable”).

Can flexible cords be run through walls?

Therefore, under these sections, flexible cords and cables are permitted to be run through walls, ceilings, or floors when used to power portable lamps. Therefore, flexible cords/cables may be run through holes in walls, ceilings, or floors to power them.

Why are wires flexible?

A cable’s flexibility is largely determined by the type of conductor used. Stranded conductors are more flexible compared to solid conductors. The flexibility of stranded conductors over solid conductors is the main reason why any flexible cable is manufactured using stranded conductors.

Which cable is used for intercom?

What Is CAT 5 Cable? Category 5 Cable, known in the industry at Cat 5, features four, twisted pairs of wire and is often used in computers, telephones, and intercom systems.

Is PVC cable flexible?

PVC Cable. Polyvinyl Chloride (PVC) insulated and sheathed cables are used in a wide variety of applications from fixed wiring to flexible installations, and are available in a number of sizes, colours and conductor materials.

Which of the following is not an acceptable use for a flexible cord or cable?

Unless specifically allowed in 400.7, flexible cords must not be: Used as substitutes for the fixed wiring of a structure. Run through holes in walls, structural ceilings, suspended or dropped ceilings, or floors. Run through doorways, windows, or similar openings.

What should workers do before using a flexible cord?

Portable cord and plug connected equipment and flexible cord sets (extension cords) shall be visually inspected before use on any shift for external defects (such as loose parts, deformed and missing pins, or damage to outer jacket or insulation) and for evidence of possible internal damage (such as pinched or crushed …

What is cord use for?

(kôrd) 1. A slender length of flexible material usually made of twisted strands or fibers and used to bind, tie, connect, or support.

What is the difference between cable and flexible cable?

Flexible Cable – A cable or special cable manufactured with flexing or constant flexing properties. Cable – A combination of conductors insulated from one another with a common covering that is not a cord. Cord – Two or more flexible insulated conductors enclosed in a flexible covering that provides mechanical protection.

Do flexible cords need to be approved for conditions?

Response: Section 1910.305 (g) covers flexible cords and cables that meet the requirements set forth in the provision. Specifically, §1910.305 (g) (1) (i) provides that flexible cords must be approved for conditions of use and location.

How many flex cycles can a cable withstand?

Typically, these cables are not tested to withstand any number of flex cycles, but some manufacturers claim to have tested their flexible cables up to 1 to 12 million flex cycles.

How do I know if my cable is flexible?

Your best bet will be to check the manufacturer’s flex cycle testing information since manufacturers consider different factors when calling a cable flexible, continuous flex, or other. Typical uses for such cables include cable tray routing, portable power equipment, wind and solar energy, oil and gas applications, and more.