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.
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 ...
Where and when are flexible cords allowed to be used?
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).
Where can you use flexible cables?
Common applications include machine tools, cranes, conveyors, portable designs and stationary heavy-duty equipment. Such cables can supply temporary ac or dc power to motors and generators, and can operate indoors and outdoors , depending on their temperature rating.
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. ... Concealed by walls, floors, or ceilings — or located above suspended or dropped ceilings (Fig.
What can damage flexible and extension cords?
A flexible cord may be damaged by door or window edges , by staples and fastenings, by abrasion from adjacent materials, or simply by aging. If the electrical conductors become exposed, there is a danger of shocks, burns, or fire.
Is SJO a flexible cord?
An SJO cord is flexible since its core consists of stranded conductors, but it only has a 300V rating. This makes the SJO cord ideal for lighter work than its more powerful 600-volt counterparts. It also has a temperature range of 40°C to +90°C.
What is the difference between flexible cable and flexible cord?
There are differences between Flex and Flexible Cable. ... 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.
Is it OK to use extension cords that have loosened installation and have exposed wires?
Is it OK to use extension cords that have loosen instillation and have exposed wires? The cords may not be used to raise or lower the equipment . It is not necessary to inspect cord and plug connected equipment and flexible cord sets until they are relocated.
Can so cord be hard wired?
You can not normally hard wire from building wiring to a machine using SO type cable. Be aware that SO type cables have a lower ampacity per wire size due to the heavy outer jacket.
Can I use flexible cable for lighting?
Most of your portable electrical appliances and light pendants will use flex cables, as it allows for flexible connections to the power point. ... Flex cables allow you to get a greater bend, compared to other cables, and also straighten out with ease.
Which type of cable is flexible?
Flexible cables can be divided into two types: those with conductors stranded in layers inside the cable, and those that have bundled or braided conductors .
Can I use Flex to wire a socket?
Nothing ‘wrong’ with using up some flex to wire a few sockets up in the garage. I recently used up some blue artic flex to wire up some garage lights in a mates garage, he was well impressed with the ‘blue’ cable.
What is the minimum size of regular use flexible cords?
For instance, Rule 4-002 requires that the minimum size for all copper conductors, except for flexible cord, equipment wire, or control circuit wire, and cable (which are specifically covered by other sections) is No. 14 AWG and No. 12 AWG if aluminum .
What increases the flexibility of a wire?
Most industrial wire is made up of multiple wire strands, called ‘base strands’, rather than being made of a solid piece of metal. Multiple strands make the wire more flexible, allowing it to bend and flex more easily than solid metal. The finer the base strand, the more flexible the wire.
How much weight can a flexible cord support?
| Table 4.2 – Maximum mass supported by twin flexible cord | Cross-sectional area (mm2) Maximum mass to be supported (kg) | 1.0 5 | 1.25 5 | 1.5 5 |
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