Issued drawing and model filenames should be as drawing numbers … 1. The first sheet of each series is numbered 01, followed by 02 through 99. ABBREVIATIONS. NGB Standard numbering system. 1.1 Symbols Included This standard is limited to North American symbols for electrical wiring and equipment. Two Character Prefix: An appropriate Prefix from the Approved Prefix List (below) indicating the type of drawing. All drawings The process is described below. Number: A sequential number (4 digits). The days of electrical engineers having drafting tables and being set up to work with D size drawings are long gone. The sheet sequence number is a two-digit number that identifies each sheet in a series of the same discipline and sheet type. Sequence numbering starts with 01; sheet number 00 is not permitted. In defining designations, prefix aspects are used: The IEC system allows drawing elements and products to be specified in either the functional, product or location aspect or some combination of two or more aspects. Hopefully and example will make it easier to understand. ELEMENTARY DIAGRAM CONNECTIONS WIRE NUMBERING. This is further illustrated in the image. ANSI/IEEE Standard Device Numbers. also summarizes recommended drawing practices for electrical construction drawings. %PDF-1.3 %���� The drawings required may be included on the E (Electrical) sheets along with the rest of the drawings produced by that designer. Still sounds a little confusing? numbers can be established by the design team using the current guidelines in the Floor and Room Numbering Standards available on the OUA web site. In this case the discipline designator, in the next Topic, I will continue explaining the, Basic Electrical Design Course – Level II, Basic Electrical Design Course – Level III, Grounding System Design Calculations Course, Lightning-1: Introduction to Lightning Protection System Design, Lightning-2: Lightning Protection System Design and Calculations, Advanced Course for Lighting Design - Level I, Introduction to Electrical Motors Basics Course, Wiring Diagrams and Calculations for HVAC Systems Course, Electrical Shop Drawings Course – Level I, Power Factor Correction Calculations Course, Electrical Water Heaters Calculations Course, Elevator Traffic and Motor Power Calculations Course, Fluorescent and Incandescent Light Fixtures Inspection Course. First 3-digit number: This is the first part of the hyphenated SLAC 6-digit base number system and shall signify the originating division department, group, or individual as determined from blocks of numbers … Work in progress drawing and model files should be named using the following format: Project – Originator – Volume/System – Level/Location – Type – Role – Number. E for electrical system. 1 - Master Element 2 - Time Delay Starting or Closing Relay 3 - Checking or Interlocking Relay 4 - Master Contactor 5 - Stopping Device 6 - Starting Circuit Breaker 7 – Rate of Change Relay 8 - Control Power Disconnecting Device 9 - Reversing Device 10 - Unit Sequence Switch 11 – Multifunction … This feature of the system makes it easy to number everything uniquely and allows for more commonality in the drawings… Handling larger paper is a hassle. For example, the electrical engineer may be the designer for a telephone system. I would like to illustrate several points with this drawing that I feel are important. ENGINEERING DRAWING STANDARDS MANUAL 3 1. NUMBERING SCHEMES The numbering scheme for electrical schematic diagrams is derived from the scheme in use for LHC drawings. 7.1 ST/EL ELECTRICAL DIAGRAMS However deviations are introduced to take into account the specific needs related to electrical … Drawing Sizes The following table defines the standard drawing sizes, and their letter designations to be used at GSFC: Notes: (a) Lengths for “J” roll size to be in ll-inch increments. H��Vˎ7��+x$h�79G{�aār0|��ج!���l#��&g�vrXM�4�U��n�X-��V^9��/�0fe�'��!eU�Jku\��΋���^�6�hmR��7���_��wC�7f����Y���f�0�G�t��'8U�F�ޙe���'��^�e����_a!ґ3ׄ>�;>0Lş�kҌ��s��¡=��U�XB�����&����6 T�4�)d���3~��͊�[P�a0 It is the first component of the sheet identification format used to identify the sheet as a member of a subset or to assign the category of subject matter contained in the drawing and it has three components as follows: UDS allows two levels of sheet identification: If the level of detail demands it, the electrical engineer may decide to segregate the telephone system information onto sheets with the Level 2 designator, For an even more complex project involving voice, data, security, and signal systems, separate drawings for each communications system may be required, perhaps even produced by a network specialist.
2020 electrical drawing numbering standards