Pertinent

A.1.1 The following is a suggested procedure for determining the Code requirements for a building or structure: (1) Determine the occupancy classification by referring to the occupancy definitions in Chapter 6 and the occupancy Chapters 12 through 42. (See 6.1.14 for buildings withmore than one use.) (2) Determine if the building or structure is new or existing. (See the definitions in Chapter 3.) (3) Determine the occupant load. (See 7.3.1.) (4) Determine the hazard of contents. (See Section 6.2.) (5) Refer to the applicable occupancy chapter of the Code, Chapters 12 through 42.

A.1.1 The Code does not address features that solely affect economic loss to private property. 1.1.1 General. The Code addresses those construction, protection, and occupancy features necessary to minimize danger to life and property. 1.1.2 Code Title. The provisions of this document shall constitute and be known as NFPA 5000, Building Construction and Safety Code, hereinafter referred to as “this Code” or “the Code.”

Wiring methods. The provisions of this section do not apply to conductors that are an integral part of factory-assembled equipment.

This Standard specifies the requirements for grid protection devices intended to be used in inverter energy systems, with ratings up to 10 kVA for single-phase units, or up to 30 kVA for three-phase units, and for the injection of electric power through an electrical installation to the electricity distribution network. NOTES: 1 Although this Standard does not apply to larger systems, similar principles can be used for the grid protection of such systems. 2 These devices do not replace devices used for protection and/or isolation as required in AS/NZS 3000.

This Standard establishes voltage standards for AC Systems in Canada to provide a guide: (a) To national committees on utilization and control equipment or devices for establishing standard ratings of such equipment or devices on a basis coordinated with standard systems; (b) To system designers so that new systems will be designed to accommodate standard ratings of equipment and devices; (c) To system operators and to electrical energy users for determining the need for corrective measures, with respect to existing systems, to accommodate current designs of equipment and devices; and (d) T

1.1 These requirements cover the following types of transformers:

1. Air-cooled transformers and reactors for general use;
2. General purpose autotransformers;
3. Ferroresonant transformers;
4. Class 2 and Class 3 transformers (which are evaluated in accordance with Part 3);
5. Cord-connected transformers (which are evaluated in accordance with Part 2);
6. Transformers incorporating overcurrent or over-temperature protective devices, transient voltage surge protectors, or capacitors; and
7. Permanently-connected transformers.

1.2 These transformers are intended to be used in accordance with the National Electrical Code, ANSI/NFPA 70, or CSA C22.1, the Canadian Electrical Code, Part I. The Canadian Electrical Code defines low voltage as any voltage from 31 to 750 V inclusive and high voltage as any voltage above 750 V. The National Electrical Code, ANSI/NFPA 70, defines low voltage as any voltage up to 600 V, nominal. Therefore, low voltage transformers intended for use in Canada may be rated above 600 V up to 750 V. Low voltage transformers intended for use in the United States are rated up to 600 V. Where information in clauses and tables in this standard reference voltage ranges, the limit of 600 V applies in the United States, while the limit of 750 V applies in Canada.

1.3 The standard does not cover the following transformers:

1. Direct plug-in types;
2. Neon;
3. Liquid-immersed;
4. Variable voltage (Variac);
5. Low voltage landscape;
6. Swimming pool and spa:
7. Ignition;
8. High intensity lighting;
9. Toy;
10. Fluorescent lamp types;
11. Transformers for welders;
12. Distribution;
13. Transformers intended for use in the United States with a nominal primary rating of more than 600 V;
14. Transformers incorporating rectifying or waveshaping circuitry;
15. Transformers for use with radio- and television-type appliances;
16. Transformers intended for use in the United States having overvoltage taps rated over 660 V;
17. Autotransformers used in industrial control equipment, which are evaluated in accordance with the requirements of the Standard for Industrial Control Equipment, UL 508, or CSA C22.2 No. 14, Industrial Control Equipment; and
18. Other special types of transformers covered in requirements for other electrical devices or appliances.

1.4 Part 1, as well as Part 2 and Part 3, establish the characteristics, construction, operating conditions, markings, and test conditions for each type of transformer.

1.5 The requirements in this standard may be modified by requirements in an end product standard if a transformer is intended for use only as a component in other equipment.

1.1 This Standard applies to all liquid-filled power transformers, except those types listed in Clause 1.3, and specifies minimum efficiency ratings. The minimum efficiencies specified are for transformers at their base kVA rating, as described in Tables 1 to 3. Minimum efficiencies are also specified for some special designs (Clause 4.3). 1.2 This Standard applies to power transformers rated from 501 to 10 000 kVA and operating with a 60 Hz waveform and does not include the effect of any harmonics.

1.1 This Standard specifies the mechanical and electrical characteristics of three-phase network distribution transformers having rated primary voltages up to 34.5 kV and kV-A ratings of 500 to 2500 Note: It is possible that transformers complying with this Standard will, if operated by a body other than an electric utility, be subject to additional requirements imposed by the electric inspection authority having jurisdiction. 1.2 This Standard applies only to three-phase distribution transformer units intended for use in a ventilated vault or enclosure below grade level.

1.1 These requirements cover instrument batteries, enclosed batteries, emergency lighting and power batteries and uninterruptible power supply batteries of the valve regulated or vented type. A battery system composed of vented or valve regulated types with battery management controls and other battery system components, and other chemistries or battery types are covered by the Standard for Batteries for Use in Light Electric Rail (LER) Applications and Stationary Applications, UL 1973.

1.1 This Standard applies to battery chargers for use on nominal system voltages not exceeding 600 V intended for household, commercial, or industrial use in accordance with the rules of the Canadian Electrical Code, Part I.