High Quality Miniature circuit breaker-FTM9-100 Wholesale to UK
Exterior and dimensions
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Miniature circuit breaker-FTM9-100 Wholesale to UK, we are now looking forward to even greater cooperation with overseas customers based on mutual benefits. If you are interested in any of our products, please feel free to contact us for more details.
|Rated current (A):||63,80,100|
|Rated voltage (V)||230,400|
|Rated impulse withstand voltage Uimp(KV):||4|
|Operating cycle times:||/hour||120|
|Conventional non-tripping current||t≤1h(In=63A) t≤2h(In>63A)|
|Conventionaltripping current:||1.45In||t<1h(In=63A) t<2h(In>63A)|
|Instantaneous tripping type:||D|
|Instantaneous non-tripping current:||t≤0.1s||10In|
|Instantaneous tripping current:||t<0.1s||20In|
|Connection Wire ㎜²:||Min/Max||16/50|
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Multimeter tutorial – This series of videos is a tutorial on how to use a digital multimeter for beginners. It will also explain the basics of electricity and address some safety issues.
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This first video covers how to measure AC (alternating current) and DC (direct current) voltage.
I use a Fluke 177 multimeter for this demonstration provided by Comtest: www.ComTest.co.za
Items covered in this multimeter tutorial:
* Multimeter safety
* How to measure battery voltage; how to measure a car battery / lead acid battery; how to measure mains electricity / power outlet / 220 volt / 110 volt.
* What is electricity; how does electricity work; what is voltage; what is current / amps / ampage / ampere.
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“Work of the electrician in three major fields: power and lighting, communication, and transportation.”
Originally a public domain film from the Library of Congress Prelinger Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).
Wikipedia license: http://creativecommons.org/licenses/by-sa/3.0/
An electrician is a tradesman specialising in electrical wiring of buildings, stationary machines and related equipment. Electricians may be employed in the installation of new electrical components or the maintenance and repair of existing electrical infrastructure. Electricians may also specialize in wiring ships, airplanes and other mobile platforms. In the film industry and on a television crew the Electrician is referred to as a Gaffer.
“Electrician” and “electrical contractor” are related terms. An electrician is an individual tradesperson; an electrical contractor is a business that employs electricians to design, install, and maintain electrical systems. In most of the United States, separate licensing requirements exist for electricians and electrical contractors. Electricians are typically not allowed to perform work for the public unless under the employment of an electrical contractor…
In the United States, electricians are sometimes referred to as a electrical wire men as opposed to Electrical linemen, who work on electric utility company distribution systems at higher voltages. Electrical contracting is divided into four areas: commercial, residential, light industrial, and industrial wiring. Service electricians have considerable skills troubleshooting wiring problems, wiring, and making repairs. Construction electricians focus on the actual wiring of buildings and may have few skills troubleshooting wiring problems. Other specialty areas are marine electricians, research electricians and hospital electricians…
In the US, licensing requirements for construction work are controlled by local building officials. Typically, certain types of electrical work are only permitted to be performed by a Journeyman or Master electrician. The requirements for becoming a journeyman or master electrician, and the types of work they are permitted to do, vary between individual states; however, there are often interstate reciprocity agreements. Not all states offer a statewide journeyman or master electrician license, and the license may be limited to the county or city’s licencing board.
Before electricians are allowed to work without supervision, they are usually required to serve an apprenticeship lasting from 3 to 5 years under the general supervision of a Master Electrician and usually the direct supervision of a Journeyman Electrician. Schooling in electrical theory and electrical building codes are required to complete the apprenticeship program. Many apprenticeship programs provide a salary to the apprentice during training. A Journeyman electrician is a well rounded craftsman who has met the experience requirements for on the job training (usually 4080 to 6120 hrs) and classroom hours (about 144 hrs.); they may also have a two year relevant degree and another two to three years of apprenticeship training and have passed a licensing exam for their jurisdiction, be it state, county or city. They are trained in all phases of electrical construction installation in various building styles (residential, commercial, industrial, basic electronics) and maintenance of equipment after installation. All of their time is well documented under the jurisdiction of the state government in order for their time to be credited. A Journeyman is usually permitted to perform all types of electrical work except the design of electrical systems, although in some jurisdictions a Journeyman may design systems within certain limits. By contrast, a residential electrician is only permitted to work on residential projects with limitations (for example under 4 stories), and apprenticeship is typically four to five years. In certain states like Michigan, to go on to be a Master Electrician and then an electrical contractor, a journeyman has to work another two years past his passing of the extensive exam given and then apply to take the Master’s exam which is another very rigid exam. Then they can apply for an electrical contractors license according to the guidelines of that government…