what can flexible cords be used for

Flexible cords and cables shall be used only for:

• Pendants (a lampholder or cord-connector body suspended by a length of cord properly secured and terminated directly above the suspended device);
• Wiring of fixtures;
• Connection of portable lamps or appliances;
• Elevator cables;
• Wiring of cranes and hoists (where flexibility is necessary);

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Why are flexible cords finely stranded?

What is the OSHA standard for cords?

Why are flexible extension cords needed?

What type of cord is needed for extension cords?

What is 1926.405?

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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 can extension cords be used for?

Extension CordsExtension cords are to be used for only temporary wiring for up to 90 days. An extension cord can be used when it is running directly from the appliance to the wall, but only as temporary wiring. ... Extension cords can be used for power tools, clamp lights, etc. for temporary power connections.

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

Flexible cords and cables shall be used only for the following: (1) Pendants. (2) Wiring of luminaires. (3) Connection of portable luminaires, portable and mobile signs, or appliances.

What should not be connected with flexible cords?

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.

Can a TV be plugged into an extension cord?

Yes, As long as the cord can handle the current that the TV draws. Most extension cords are less than 10 feet long and uses #AWG 18 or larger wire and can be used with loads that draw up to10 amps.

When should you not use an extension cord?

Do not substitute extension cords for permanent wiring. Do not run through walls, doorways, ceilings, or floors. If a cord is covered, heat cannot escape, which may result in a fire hazard. Do not use an extension cord for more than one appliance.

Can flexible cable be used for fixed wiring?

Flexible cables may also be used for overhead wiring between buildings. Regulation 521.9. 1 permits the use of flexible cables for fixed wiring if they are of the heavy duty type or the risk of damage is low or protection against mechanical protection is provided.

What are allowable situations for using flexible cords and cables include?

Use flexible cords only for:Pendants.Wiring fixtures.Connecting portable lamps and appliances.Connecting portable signs.Elevator cables.Wiring cranes and hoists.Connecting fixed equipment.Preventing noise or vibration.More items...•

Are extension cords against fire code?

However, facilities should use caution when substituting fixed building power with temporary power sources such as power-strips and extension cords. The International Fire Code and NFPA 70 National Electrical Code both state that “Extension cords and flexible cords shall not be a substitute for permanent wiring.”

What is the difference between flexible cable and flexible cord?

Difference between flexible cable and cord Flexing cord is designed for a specific number of flex life cycles over an application's runtime. Flexible cable is any cable that is flexible and easy to bend.

Why do some things say not to use an extension cord?

The appliance draws a current higher than the ampacity of most extension cords. This will heat the cord and is a fire risk. The length of the cord could result in a voltage drop which the appliance cannot tolerate.

Where flexible cords are permitted to be permanently connected?

Flexible cords and cables shall be permitted for the electrical connection of permanently installed equipment racks to the premises wiring system to facilitate access to equipment or for the purpose of isolating the technical power system of the rack from the premises ground.

Why do some things say not to use an extension cord?

The appliance draws a current higher than the ampacity of most extension cords. This will heat the cord and is a fire risk. The length of the cord could result in a voltage drop which the appliance cannot tolerate.

Can you use an extension cord in your house?

For home use, a 50-foot extension cord with a 12-gauge wire thickness offers the best in portability and power. A 12-gauge, 50-foot wire can handle 15 amps, which matches most residential breakers and many older fuses.

What is the importance of having an extension cord at home?

They are used to connect multiple appliances, such as lights, heaters, and power tools, to one outlet. Extension cords can be used to extend the length of an electrical cord by several feet for your convenience.

Why are extension cords prohibited?

many colleges prohibit cords altogether, while others won't allow them unless they're surge protected, as unprotected cords can overwhelm a dorm's electrical system and cause electrical failure or other dangers.”

Extension and Flexible Cords: Safety Guidelines & OSHA Standards - Gowrie

Extension and Flexible Cords: Safety Guidelines & OSHA Standards. Flexible extension cords are widely used at marinas, construction sites, yacht clubs, homes, businesses, and more.

regon Plus OSHA FACT SHEET FACT SHEET Flexible cords and cables ...

regon OSHA FACT SHEETFACT SHEET Plus Plus Website: osha.oregon.gov alem entral fce 350 Winter t. E alem, 9301-3 hone: 503-3-3 Toll-free: 00-9-9 a: 503-94-41 Flexible cords and cables

What Does OSHA Say About Plugging Extension Cords Together?

We had a client once comment: “I have been reading about plugging extension cords.I want to make sure when I go on one of our sites and say, ‘You can’t plug one cord into another’ that I can give a reason why.

Flexible Cords and Cables - OSHAcademy

Flexible Cords and Cables. This standard for safe use of flexible cords is one of the most frequently violated electrical standards, particularly in smaller plants.

What is OSHA interpretation letter?

OSHA requirements are set by statute, standards and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. This letter constitutes OSHA's interpretation of the requirements discussed. Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information. To keep apprised of such developments, you can consult OSHA's website at https://www.osha.gov.

When was Subpart K of OSHA?

Subpart K was promulgated in 1986. At that time, the most current version of the National Electrical Code (NEC) was the 1984 version.

Can flexible cords be run through walls?

In sum, flexible power cords/cables used to power portable lamps and plug-in type portable construction power tools are permitted under Subpart K to be run through walls, ceilings, or floors (where necessary). 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 is utilization equipment?

utilization equipment, generally other than industrial, normally built in standardized sizes or types, which is installed or connected as a unit to perform one or more functions.

Does NEC 400.4 list cords?

The NEC Article 400.4 Table does not list cords or cables with a designated use of telephone, TV or thermostats.1 Therefore, neither the 1984 NEC nor the OSHA standard prohibits those from being run through walls, ceilings, or floors. In addition, the Tables do not list SER, NMB, MC or AC2 designated cable.

Why are flexible cords not used?

This standard for safe use of flexible cords is one of the most frequently violated electrical standards, particularly in smaller plants. There is a definite need and place for cords, but there is also a temptation to misuse them because they seem to offer a quick and easy way to carry electricity to where it is needed. The basic problem is that flexible cords in general are more vulnerable than the fixed wiring of the building. Therefore, cords should not be used if one of the recognized wiring methods could be used instead.

Why are flexible cords connected to devices and fittings?

Flexible cords shall be connected to devices and fittings so that strain relief is provided which will prevent pull from being directly transmitted to joints or terminal screws.

What is a pendant lamp?

Pendants (a lampholder or cord-connector body suspended by a length of cord properly secured and terminated directly above the suspended device);

What happens if a flexible cord is damaged?

If the conductors become partially exposed over a period of time, there will be danger of shocks, burns, or fire.

What is a fastening appliance?

Appliances where the fastening means and mechanical connections are designed to permit removal for maintenance and repair (e.g. water coolers, exhaust fans);

Can flexible cords be repaired?

Flexible cords shall be used only in continuous lengths without splice or tap. Hard service flexible cords, No. 12 or larger, may be repaired if spliced so that the splice retains the insulation, outer sheath properties, and usage characteristics of the cord being spliced.

What is the purpose of a connection of stationary equipment?

Connection of stationary equipment to facilitate their frequent interchange (equipment which is not normally moved from place to place, but might be on occasion);

What is flexible cord?

Flexible cords and cables 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.

Can you use flexible cords on equipment?

Flexible electric cords connected to equipment must not be used for raising or lowering the equipment. Flexible cords must not be fastened or hung in a way that could damage the outer jacket or insulation. Portable cord-and-plug connected equipment and extension cords must be inspected before use on each shift for defects such as loose parts, deformed and missing pins, or damage to outer jacket or insulation and for evidence of internal damage such as a pinched or a crushed outer jacket.

Do you need a receptacle outlet for flexible cords?

receptacle outlet must be installed where flexible cords with attachment plugs are used. Receptacles are not necessary in situations where flexible cords are allowed by code to be permanently connected.

What is a raceway?

Raceway. An enclosed channel of metallic or nonmetallic

Can tray cable be installed in a raceway?

If this is tray cable then I believe it can be installed in a raceway even in a residence. I am not at my book but I remember looking it up and we determined it would be compliant

Can you sleeve flexible cable in conduit?

I believe you can sleeve flexible cable in a piece of conduit. As CS stated that is not a raceway and would be compliant IMO.

Is flexible cable allowed in a raceway?

Art. 400.8 (6) seems to not allow flexible cable in a raceway but if there is another section of the code that specifically allows it then it may be okay. Art. 690 may allow it but I am not sure

Can you run a TC-ER in conduit?

You can run TC-ER in conduit. Or you could strap it to some angle or put it in channel or strut.

What are the covers of outlet boxes that have holes through which flexible cord pendants pass?

Covers of outlet boxes that have holes through which flexible cord pendants pass must have bushings designed for that purpose or must have smooth, well-rounded surfaces on which the cords bear.

What is strain relief?

Use strain relief when connecting flexible cords so that tension, including tension from the weight of the cord, will not be transmitted to the conductor terminals. Examples of strain relief include knotting the cord, winding with tape, and use of fittings designed for that purpose.

What is flexible cord?

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 type of cord is used for portable electric tools?

Cord sets used with portable electric tools and appliances must be of the three-wire type and must be designed for hard or extra-hard use.

What is the phone number for OSHA in Oregon?

For information about Oregon OSHA services and answers to technical questions, call (503) 378-3272 or toll-free within Oregon, (800) 922-2689.

Do flexible cords have to be energized?

Connecting moving parts. Temporary wiring. Flexible cords must have an attachment plug and must be energized from a receptacle outlet when they are used for connecting portable lamps and appliances, connecting fixed equipment, and connecting appliances that can be easily moved for maintenance and repair. Do not:

Can flexible cords pass through doorways?

Flexible cords must be protected from damage; avoid sharp corners and projections. Flexible cords can pass through doorways and other pinch points, if the cords are protected. Cord sets used with portable electric tools and appliances must be of the three-wire type and must be designed for hard or extra-hard use.

What is not allowed in 400.8?

Banned uses. In 400.8, the NEC lists specific types of uses that are not permitted for flexible cords and cables [400.8]. Unless specifically allowed in 400.7, flexible cords must not be: Used as substitutes for the fixed wiring of a structure.

What is fixture wire?

Fixture wires. Fixture wires are flexible conductors used for wiring fixtures and control circuits, but not branch circuits. There are some special uses and requirements for fixture wires, and NEC Art. 402 deals especially with fixture wires. Some key points:

What is the first rule of working with flexible cords and cables?

The first rule of working with flexible cords and cables is always use that table. Some other basic rules to always keep in mind include: Always use a cord and fittings identified for the application [400.3]. Never use a flexible cord or cable in place of a permanent wiring method.

What is flexible cord?

Flexible cord also called 'cabtire' is a fine stranded highly flexible cable. Like SJOW or SOOW. Could be used in extension cords, or where connection needs flexibility (feed drop for a machine). Very popular in tradeshow industry, film sets, and temporary power for events.

What does "as built" mean on a cord?

If the appliance and/or piece of equipment comes with the cord attached "as built" it has been evaluated for safety according to a particular standard.

Why are flexible cords finely stranded?

Flexible cords are finely stranded for flexibility, so straining a cord can cause the strands of one conductor to loosen from under terminal screws and touch another conductor.

What is the OSHA standard for cords?

The OSHA construction standard requires flexible cords to be rated for hard or extra-hard usage. These ratings are derived from the National Electrical Code, and are required to be indelibly marked approximately every foot along the length of the cord.

Why are flexible extension cords needed?

With the wide use of power tools on construction sites, flexible extension cords often are necessary. Because they are exposed, flexible, and unsecured, they are more susceptible to damage than is fixed wiring.

What type of cord is needed for extension cords?

Extension cords must be 3-wire type so they may be grounded, and to permit grounding of any tools or equipment connected to them.

What is 1926.405?

1926.405, Wiring methods, components, and equipment for general use.