Which of the following is not an acceptable application of flexible cords and cables?

Which of the following is not an acceptable application of flexible cords and cables?

This is a violation of NEC 400.8(2) since flexible cords are not permitted to be run through holes in walls, structural ceilings, suspended ceilings, dropped ceilings, or floors.

What can flexible cords be used for?

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 material is used for cables?

Electrical conductors are made up of metals such as, copper, aluminum, etc. These metals are used to make wires. Most wires are made out of copper because it conducts electricity with high flexibility and very little resistance.

Which of the following are types of flexible cords?

Extension cords (cord sets), cables, and electrical cords are types of flexible cords. A power strip must not be connected or “daisy chained” to another power strip. Power strips must be installed and used in accordance with the product’s instructions.

Which of the following is an acceptable use of a flexible cord?

Flexible cord/cables typically used in permanent installations for telephone, TV or thermostats are not prohibited from being run through holes in walls, ceilings, or floors by either the NEC or OSHA’s Subpart K.

What conductors are not approved for wet locations?

As an example, two of the most common types of wire used in residential projects are THHN and THWN. THHN is thermoplastic, highly heat-resistant (up to 90 degrees C.), and nylon-jacketed. It is not suitable for wet locations.

What is the difference between a flexible cable and a flexible cord?

Flexible cable is any cable that is flexible and easy to bend while flexing cable is designed for a certain amount of flex life cycles during an application’s runtime. …

What are the different materials used for control cables and how are they constructed?

Aircraft control cables are fabricated from carbon steel or stainless steel. The basic component of a cable is a wire. The diameter of the wire determines the total diameter of the cable. A number of wires are preformed into a helical or spiral shape and then formed into a strand.

Where flexible cord is approved for and used with a specific appliance it shall be considered to be protected?

If flexible cord is used with a specific listed appliance or luminaire, the conductors are considered protected against overcurrent when used within the appliance or luminaire listing requirements. Note: The NEC only applies to premises wiring, not to the supply cords of listed appliances and luminaires.

Where flexible cord is approved and used with a specific appliance it shall be considered protected?

overcurrent
If flexible cord is used with a specific listed appliance or luminaire, the conductors are considered protected against overcurrent when used within the appliance or luminaire listing requirements.

What of the following conductors are suitable for use in wet locations?

– Insulated conductors and cables used in wet locations shall comply with one of the following:

• Be moisture – impervious metal – sheathed.
• Be types MTW, RHW, RHW-2, TW, THW, THW-2, THHW, THWN, THWN-2, XHHW, XHHW-2, ZW.
• Be of a type listed for use in wet locations.