• 목록
• 답변
• 글쓰기
• 게시판 리스트 옵션
  • 수정
  • 삭제

In practice most BS 546 plugs are unfused with fused versions being unusual and expensive. The Midget Gauge was rated at 3 A, the Standard Gauge rated at 5 A, and the Union Gauge rated at 10 A. Also offered were two-way and three-way "T pieces" or multi-way adaptors for the 3 A and 5 A plugs, two-way only for the 10 A. Versions of the concentric plug and socket were now offered rated at 5 A and 10 A. At the same time Lundberg were offering the 2.5 A Dot, 5 A Universal, and 15 A Magnum, and Tucker were offering a range of 5 A, 10 A and 20 A plugs and sockets. Maud Lucas Lancaster mentions an earthed iron-clad plug and socket by the English firm of A. Reyrolle & Company. The 1911 General Electric Company (GEC) Catalogue included several earthed sockets intended for industrial use. By the time the 1911 GEC Catalogue was published two-pin plugs and sockets were being offered with specifications in amps, but still with no indication as to pin size or spacing. A fused 13 A version of this continued to be available after the introduction of BS 1363, illustrating that BS 546 was not used exclusively at any time.

You'll have a great time here, guaranteed and well located for everything. And that's finally what will require going to FAA and trying to convince them that I know how to design an electrical system that handles failures in an untraditional way, what is electric cable but well. In this design the foil or mesh shield has a circular cross section and the inner conductor is exactly at its center. There is not much to say about the PCB design. Obviously you did a lot of research, and your design looks sound overall. This was used for high power industrial equipment up to 7.2 kW, such as industrial kitchen appliances, or dimmer racks for stage lighting. It is the largest in domestic use and is commonly used in the UK for indoor dimmable theatre and architectural lighting installations. This plug was also once used in theatrical installations for the same reasons as the 15 A model below. The 30 A plug is the largest of the family.

This is checked by means of the use of various gauges which are specified in the standard; these gauges ensure that the socket contacts are correctly positioned and make effective and secure contact with the plug pins. In BS 546 there are no dimensions for socket contacts, instead they are required to make good contact with the specified plug pins. To make a comment, please send an e-mail to solar (at) lowtechmagazine (dot) com. In the UK it was used for moderate sized appliances, either on its own 5 A circuit or on a multi socket 15 A circuit, and also on many adaptors (both multi socket 5 A adaptors and adaptors that also had 15 A pins). As electricity became a common method of operating labour-saving appliances, a safe means of connection to the electric system other than using a light socket was needed. Electrical sockets for single phase domestic, commercial and light industrial purposes generally provide three electrical connections to the supply conductors.

There was a lens in front of the disk to focus light onto the subject. They also require that all mains appliances for domestic use in the UK be supplied with approved BS 1363 plugs, but there is an exception for plugs fitted to shavers and toothbrushes which are normally a UK shaver plug (BS 4573) but may also be a Europlug (BS EN 50075). The regulations also contain a provision for the approval of non-BS 1363 conforming plugs when "the plugs are constructed using an alternative method of construction which provides an equivalent level of safety in respect of any risk of death or personal injury to plugs which conform to BS 1363 and is such that plugs of that type may reasonably be expected to be safe in use". Electric toothbrushes in the UK are normally supplied with the same plug. The pin dimensions are the same as those of the 5 A plug specified in the obsolete BS 372:1930 part 1 (as shown in the table above). This plug corresponds to Type M in the IEC table. Use of the BS 546 30 A plugs and sockets diminished through the 1970s as they were replaced with BS 4343 (which later became IEC 60309) industrial combo plugs and sockets.