Standards

This standard specifies requirements and dimensions for PVC insulated cables for operation at nominal voltages up to and including 1900 V to armour or earth and 3300 V between conductors.

This standard covers thermoplastic and rubber tapes for use as electrical insulation at not more than 600 V and at 80 C (176 F) and lower temperatures on joints and splices in wires and cables in accordance with the National Electrical Code.. It is intended that rubber tape on a joint or splice be mechanically protected by a covering such as friction tape . Thermoplastic tape is acceptable without the additional mechanical protection.

BESP 100, Issue 1, November 1, 1996. This procedure describes the process for obtaining a Technical Acceptance Certificate (TAC) for Broadcasting Equipment.

This standard specifies performance requirements for hollow load-bearing concrete masonry units made from Portland cement, water and mineral aggregates with or without the inclusion of other materials. It covers three weight classifications of the concrete masonry units: (a) normal weight; (b) medium weight; and (c) lightweight.

This specification covers hollow and solid (see 5.3 and 5.4) concrete masonry units made from hydraulic cement, water, and mineral aggregates with or without the inclusion of other materials. There are three classes of concrete masonry units: Normal Weight, Medium Weight, and Lightweight. These units are suitable for both load bearing and non-load bearing applications. This standard covers hollow blocks from sizes of 3in. (76.2mm) to 8 in. (203.2mm).

Concrete masonry units covered by this specification are made from lightweight or normal weight aggregates, or both.

This standard specifies requirements for hollow non-load-bearing concrete masonry units made from portland cement, water and mineral aggregates with or without the inclusion of other materials. It covers three weight classifications of the concrete masonry units: (a) Normal weight; (b) Medium weight; and (c) Light weight. It also covers the sampling and testing of hollow non-load-bearing concrete masonry units for compressive strength, absorption, weight, moisture content and dimensions. It does not cover blocks intended solely for decorative purposes.

These requirements cover ballasts of the resistance, reactance, and electronic (solid state) types for use with fluorescent lamps involving a potential of 2500 volts or less in accordance with the National Electrical Code, NEPA 70. A fluorescent lamp ballast may be determined by investigation to be acceptable for use, in a fixture or other device, with electric-discharge lamps of other than the fluorescent type. A product that contains features, characteristics, components, materials, or systems new or different from those in use when the standard was developed, and that involves a risk of fire, electric shocks, or injury to persons shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to maintain the level of safety for the user of the product as originally; anticipated by the intent of this standard.

This standard specifies the conditions under which ready-mixed concrete shall be made and delivered, and the methods by which the purchaser can specify with his enquiry or order, the properties of the concrete required.  It provides a specification for the production and supply of ready-mixed concrete. Methods of specifying ready-mixed concrete for nominal mixes, specified strength mixes and mixes for special purposes, to meet the requirements of standard codes of practice, are covered.  It also gives guidance on the data to be provided by the purchaser when ordering ready-mixed concrete, the inspection facilities to be provided by the supplier and the appropriate tests.  Routine tests which must be carried out by the supplier and those which are the responsibilities of the purchaser are also included.  This standard does not cover the placing, compaction, curing or protection of the concrete after delivery, nor does it apply to materials for lean concrete or similar road care materials.

These requirements cover temporary-use, seasonal decorative-lighting products and accessories with a maximum input voltage rating of 120 V to be used in accordance with the National Electrical Code, ANSI/NFPA 70. Temporary-use is considered to be a period of installation and use not exceeding 90 days. 1.2 These requirements cover factory-assembled seasonal lighting strings with push-in, midget-screw, or miniature-screw lampholders connected in series for across-the-line use or with candelabra- or intermediate-screw lampholders connected in parallel for direct-connection use. These requirements also cover factory-assembled seasonal decorative outfits such as wreaths, stars, light sculptures, crosses, candles or candle sets without lamp shades, products in the shape of, or in resemblance to, Christmas trees with simulated branches and needles, products in the shape of, or in resemblance to, wreaths provided with simulated branches and needles, blow-molded figures or objects, animated figures, tree tops, controllers, tree stands, electric tree poles, and motorized decorative displays. These requirements cover products which are portable and not permanently connected to a power source.

 This standard specifies the minimum requirements for VHF transmitters and receivers fitted with a 50 Ω external antenna socket or connector for use on board ships and operating in the bands between 156 and 174 MHz allocated to the maritime mobile service by the International Telecommunications Union Radio Regulations (Radio Regulations, Appendices 18 and 19).