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ANSI C79.1-2002 电灯玻璃灯泡的专业名词


ANSI C79.1 - 2002

American National Standard
Approved September 16, 2002 Secretariat: ANSLG National Electrical Manufacturers Association

For Electric Lamps-Nomencl

ature for Glass Bulbs Intended for Use with Electric Lamps

An American National Standard implies a consensus of those substantially concerned with its scope and provisions. It is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. Users are cautioned to obtain the latest editions. The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute.

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ANSI C79.1-2002

American National Standard

Approval of an American National Standard requires verification by ANSI that the requirements for due process, consensus, and other criteria for approval have been met by the standards developer. An American National Standard implies a consensus of those substantially concerned with its scope and provisions. Consensus is established when, in the judgment of the ANSI Board of Standards Review, substantial agreement has been reached by directly and materially affected interests. Substantial agreement means much more than a simple majority, but not necessarily unanimity. Consensus requires that all views and objections be considered, and that a concerted effort be made toward their resolution. The existence of an American National Standard does not in any respect preclude anyone, whether s/he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standards. It is intended as a guide to aid the manufacturer, the consumer, and the general public.

The American National Standards Institute does not develop standards and will in no circumstances give an interpretation of any American National Standard. Moreover, no person shall have the right or authority to issue an interpretation of an American National Standard in the name of the American National Standards Institute. Requests for interpretations should be addressed to the Committee Secretariat referred to on the title page.
CAUTION NOTICE: This American National Standard may be revised or withdrawn at any time. The procedures of the American National Standards Institute require that action be taken periodically to reaffirm, revise, or withdraw this standard. Purchasers of American National Standards may receive current information on all standards by calling or writing the American National Standards Institute.

Printed and distributed by: Information Handling Services/Global Engineering Documents 15 Inverness Way East, Englewood, CO 80112-5776 Under Contract with National Electrical Manufacturers Association Copyright ? 2002 by American National Standard Lighting Group In Affiliation with National Electrical Manufacturers Association All rights reserved.
No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without prior written permission of the publisher. Printed in the United States of America

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Copyright ? 2002 by American National Standard Lighting Group—NEMA

ANSI C79.1-2002

Foreword

(This Foreword is not part of ANSI C79.1-2002.)

Suggestions for improvement of this standard should be submitted to the Secretariat C78, American National Lighting Group of the National Electrical Manufacturers Association, 1300 North 17th Street, Suite 1847, Rosslyn, VA 22209. This standard was processed and approved by Accredited Standards Committee on Nomenclature for Glass Bulbs and Molded Glass Flares for Electric Lamps, C79. Committee approval of the standard does not necessarily imply that all committee members voted for that approval. Information concerning the approval of this standard is based on the documents listed in the table below: CDV 79/147 and RV/148 Amendment / Change Fourth Edition CDV 79 (1)/147 RV 79 (1)/148

At the time it approved this standard, the ASC 79 Committee had the following members: David Mullen, Chair ASC79 David Mullen, Technical Coordinator Randolph N. Roy, Secretariat and Coordinating Editor Ken Denton, Consulting Editor Organization Represented: Name of Representative: GE Lighting .................................................................. Bernard Rachel OSRAM SYLVANIA ..................................................... David Mullen Philips Lighting Company ............................................ Al Rousseau Underwriters Laboratories, Inc..................................... David Belt

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ANSI C79.1-2002 TABLE of CONTENTS Foreword ................................................................................................................. iii 1 2 Scope.................................................................................................................1 Definitions ..........................................................................................................1 2.1 Bulb.............................................................................................................1 2.2 Approximate reference line .........................................................................1 2.3 Base line or base circle ...............................................................................1 2.4 Base line length ..........................................................................................1 Designations ......................................................................................................2 3.1 General (other than rectangular).................................................................2 3.1.1 First letter symbol ................................................................................2 3.1.2 First number symbol ............................................................................2 3.1.3 Second letter symbol ...........................................................................2 3.1.4 Second number symbol .......................................................................2 3.1.5 Fluorescent and PAR...........................................................................6 Units...................................................................................................................6 4.1 Customary units ..........................................................................................6 4.2 SI (Metric) units...........................................................................................7 4.2.1 General ................................................................................................7 4.2.2 Fluorescent bulbs ................................................................................7 4.2.3 Round PAR..........................................................................................7 4.2.4 Rectangular bulbs................................................................................7 Examples of designations ..................................................................................8 5.1 Customary units ..........................................................................................8 5.2 SI (metric) units...........................................................................................9 Bulb shape classification....................................................................................9 6.1 Basic shapes...............................................................................................9 6.2 Modifiers ...................................................................................................12 Identification of bulbs for use in lamps .............................................................13 7.1 Lamp description in customary units.........................................................13 7.2 Lamp description in metric units................................................................13

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Appendices Annex A (informative) Decimal equivalents and metric conversions of existing bulbs.......A-3 Annex B (informative) Related Standards............................................................... A-7

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Copyright ? 2002 by American National Standard Lighting Group—NEMA

ANSI C79.1-2002

AMERICAN NATIONAL STANDARD
Nomenclature for Glass Bulbs Intended for Use with Electric Lamps
1 Scope This standard describes a system of nomenclature that provides designations for glass bulbs used as the envelopes for electric lamps. This system is shown in customary (inch-based) units and SI (metric) units. The nomenclature system is intended for application with bulbs that originate both as parts and as stock. As a part, a bulb is assembled directly into finished lamps without major alterations. As stock, a bulb may be re-worked or altered during lamp assembly, while maintaining its basic identifying characteristics. 2 2.1 Definitions Bulb

The outer envelope of glass of other transparent or translucent material enclosing the essential components of an electric lamp. 2.2 Approximate reference line

A construction line transverse to the axis through the neck of the bulb. It defines the approximate position at which the rim of a base, such as an Edison screw base, would meet the neck of a bulb. The sole purpose of the approximate reference line is to aid the establishment of technical definitions of bulb shapes. This line appears in figure 1 as a C-D line. No such line exists for pressed glass bulbs. 2.3 Base line or base circle

A diameter on the end portion of a bulb at the approximate point where the base seats. The concept of a base line or base circle is applicable only to double-ended tubular lamp bulbs. 2.4 Base line length

The distance between the two base lines.

Copyright ? 2002 by American National Standard Lighting Group—NEMA

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ANSI C79.1-2002

3 3.1

Designations General (other than rectangular)

Glass bulbs shall be described by a designation consisting of the following sequence of letter and number symbols, without spaces in between, as follows: a) A first letter symbol consisting of up to three letters which describes the bulb shape. The letter or letters of this symbol may in some cases be a basic shape letter symbol only and in other cases it may be a combination of a basic shape symbol and a modifier or modifiers. Basic shapes are defined in Clause 7.1 and modifiers are defined in clause 7.2. b) A first number symbol which states the major diameter (nominal) of the bulb c) A second letter symbol consisting of one or two arbitrary letters d) A second number symbol using arbitrary numbers 3.1.1 First letter symbol The first letter symbol shall identify the shape classification to which the bulb belongs. The letter symbols that have thus far been established are described in Clause 7.1 and illustrated in Figure 1. If additional symbols are adopted, the letters I, O, Q, and U shall not be used. 3.1.2 First number symbol The first number symbol shall indicate one of the following: a) The nominal major diameter of that part of the bulb above the CD line b) The nominal major diameter of a tubular bulb c) The maximum diameter of a round PAR bulb 3.1.3 Second letter symbol The second letter symbol shall serve to distinguish between bulbs having the same shape classification and major diameter but differing in other features above the CD line. The letters of the second letter designation shall be assigned in alphabetical order beginning with A. The letters, I, O, Q, and U shall not be used. If more than 22 variations are encountered, a second series beginning ZA, ZB, etc., shall be used. The third series, if needed, shall be YA, YB, etc. 3.1.4 Second number symbol The second number symbol shall serve to distinguish between bulbs alike in all respects above the CD line but differing below the CD line.

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ANSI C79.1-2002

Figure 1 – Basic bulb shapes

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ANSI C79.1-2002

Figure 1 (continued)

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ANSI C79.1-2002

Figure 1 (continued)

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ANSI C79.1-2002 3.1.5 Fluorescent and PAR Several variations exist in designating open-ended fluorescent bulbs and PAR-type glassware. Most manufacturers use the first letter and first number symbols designated in this standard, but vary in assignments of second letter and second number symbols. Instead of attempting standardization at this time, it has been decided to retain the various existing systems until the SI (metric) system is implemented. 4 Units

Although it is an objective to harmonize bulb designations internationally, it is expected that a transition period will be necessary to change over to use of metric designation only. During this transition period either of two types of designations, customary or metric, or dual designation showing both units, may be used. The relationship of customary, decimal and metric nomenclature for existing bulbs is shown in Annex A. Committee C79 shall develop any additional conversions that may be necessary. 4.1 Customary units

The nominal value of a bulb’s major diameter shall be the basis of the bulb size unit. The unit shall be expressed in eighths of an inch, with fractions added when necessary. A tubular shaped bulb, for example, 1-1/4 inches (10/8ths) in diameter is called a T10 bulb. Fractional units are added with regard to the following size ranges. Bulb Size <1/4” ?” to ?” >3/4” Fractional Units Eighths of an eighth of an inch, 1/64th. Fourths of an eighth of an inch, 1/32nd. Half of an eighth of an inch, 1/16th.

An example of determining bulb size with fractional units in the ?” to ?” diameter range is as follows, for a nominal bulb diameter of 0.335 inch. = 0.250 + 0.085 = 0.250 + 0.062 + 0.023 0.335 = 2/8 + 2/32 + 0.023/0.31 = 2/8 + 3/32 (rounded upward) = 2 units + 3 fractional units (As a T2-3/4 bulb, for example)

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Copyright ? 2002 by American National Standard Lighting Group—NEMA

ANSI C79.1-2002 The optional and interchangeable use of decimal equivalents, instead of fractions, is allowed for bulbs with fractional size designations. Any decimal shall be rounded to one significant place. For the same bulb size as used in the preceding note, 0.0335 inch, the decimal size would be calculated as follows. = 0.250 + 0.085 = 2/8 + 85/125 0.335 = 2 units + 0.68 decimal units = 2.7 (rounded upward) (As a T2.7 bulb, for example) 4.2 SI (Metric) units

4.2.1 General In metric designations the first number symbol shall consist of two numbers expressed in millimeters (to the nearest whole number) and separated by a diagonal line. The number to the left of the diagonal shall indicate the average major bulb diameter above the CD line; the number to the right of the diagonal shall indicate the average diameter of the bulb neck at the CD line. 4.2.2 Fluorescent bulbs For fluorescent bulbs the two-number symbol described in 5.2.1 shall be used. The number to the left of the diagonal shall designate the bulb diameter in millimeters (to the nearest whole number); the number to the right of the diagonal shall designate the base line length to the closest tenth of a millimeter. 4.2.3 Round PAR Only one number shall be used to designate round PAR-type glass bulbs. This shall be the dimension of the maximum diameter, expressed in millimeters (to the nearest whole number). 4.2.4 Rectangular bulbs Rectangular glass bulbs shall be described by the letter symbol REC followed by two sets of numbers. The first number shall designate the dimension of the shorter side; the second number shall designate the dimension of the longer side. These two numbers shall be expressed in millimeters (to the nearest whole number) and shall be separated by the multiplication symbol (x).

Copyright ? 2002 by American National Standard Lighting Group--NEMA

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ANSI C79.1-2002

5 5.1

Examples of designations Customary units

See Table 1.

Table 1 – Examples of designations in customary units General Complete customary designation First letter symbol First number symbol Second letter symbol Second number symbol A19C3 A 19 C 3 Fluorescent T12AG11 T 12 AG* 11* PAR PAR38 PAR 38 REC NONE -

*Each manufacturer uses a different system.

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Copyright ? 2002 by American National Standard Lighting Group—NEMA

ANSI C79.1-2002

5.2

SI (metric) units

See Table 2.

Table 2 – Examples of designations in SI (metric) units General Complete customary designation First letter symbol First number symbol Second letter symbol Second number symbol A60/29C3 A 60/29 C 3 Fluorescent T38/1180AG11 T 38/1180 AG* 11* PAR PAR121 PAR 121 REC REC142x200 REC 142x200 -

*Each manufacturer uses a different system.

6 6.1

Bulb shape classification Basic shapes

The basic shape symbols are listed in Table 3. The descriptive information used in conjunction with the associated illustration in Figure 1 forms the definition of each shape.

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ANSI C79.1-2002

Table 3 – Basic shapes Letter Symbol General Meaning

Explanatory Notes A bulb shape having a spherical end section that is joined to the neck by a radius that: 1) has a center outside the bulb 2) has a magnitude greater than the radius of the spherical section 3) is tangent to both the neck and the curve of the spherical end section
NOTE – These bulbs do not have any significant straight portion between the spherical end and the transitional radius into the neck.

A

B

Bulged

A bulb in which the curve making up the major portion of the side of the bulb has a radius greater than one-half the bulb diameter and a center in the plane of the maximum diameter A bulb consisting of conical or near-conical end section, which is joined to the neck by an approximately hemispherical section; if the end section is not conical the curve making up the major portion of the side of the bulb has a center below the plane of the maximum diameter A bulb similar to a “B” shape but having the sides formed by a section of an ellipse.

C

Conical

E

Elliptical

F

Flame

A bulb resembling the flame of a candle having irregular flutes on the sides.

G

Globular

A bulb of essentially spherical shape.

K

A bulb which is similar in shape to an “M” bulb, except there is a conical transitional section between the major diameter and the neck rather than a curved section. Continued on next page

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ANSI C79.1-2002 Table 3 – continued Letter Symbol General Meaning

Explanatory Notes A bulb having a spherically shaped end section blended, above the major diameter, to a smaller radius curve centered on the major diameter, which blends with a transition curve of approximately the same radius for joining the neck. A bulb having a spherical end section and a conical midsection, the sides of which are tangent to the curve of the spherical section. A bulb that includes a parabolic or elliptical section below the major diameter designed to receive a reflective coating so as to direct the beam of light.

M

Mushroom

P

R

Reflector

S

StraightSides

A bulb having a spherically shaped end section, a conical lower section and an intermediate curve joining the two.

T

Tubular

A bulb that is mostly cylindrical in form.

MR

A curved focusing reflectorized bulb which may have a multifaceted inner surface that is generally dichroic Multifaceted coated. It is commonly used with a tungsten halogen reflector light source and may be either open faced or sealed together with a glass lens. The lens, if any, may be either plain or configured. Parabolic aluminized reflector* A bulb formed by the sealing together during the lampmaking process of a pressed glass parabolic section and a pressed lens section. The lens section may be either plain or configured.

PAR

REC

Rectangular A bulb with a rectangular face.

*Aluminum is not the only material for use as a reflector coating.

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ANSI C79.1-2002

6.2

Modifiers

The basic shape designations in Clause 7.1 may be modified by the addition, as a suffix, of one of the symbols listed in Table 4. The descriptive information used in conjunction with the associated illustrations in Figure 1 forms the definition of each shape. Table 4 – Modifiers A B C D E F L S T Angular tip Bulged section below the bulb’s major diameter and above its approximate base line Conical section Dimple pointing inward or outward Elliptical section below the bulb’s major diameter and above its approximate base line Flutes which twist around the outside and taper towards the tip of the bulb Lens end Tubular neck section below the bulb and above the approximate base line Tubular neck or top section CA and BA RB
(See note 1)

CC
(See note 2)

ED, RD and TD RE
(See note 3)

CF TL PS
(See note 4)

BT and GST

NOTES 1. “RB” indicates a reflector bulb having a bulged section above its base line. This shape is commonly called “BR”. 2. “CC” indicates two conical sections, the sections being joined at their bases at the major diameter of the bulb. This shape was formerly referred to as “DC”. 3. “RE” indicates a reflector lamp with an elliptical section below the major diameter. This shape is commonly called “ER”. 4. “PS” was formerly employed as a basic shape letter symbol. In the context as a modified shape, the technical interpretation is the same.

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ANSI C79.1-2002

7

Identification of bulbs for use in lamps

When a bulb designation is used as part of a lamp identification, only the bulb’s first letter symbol and first number symbol shall be used. The following Subsections 8.1 and 8.2 describe such practice in both the customary and metric unit cases. 7.1 Lamp description in customary units

If a bulb identification is needed as part of a lamp identification, first letter symbol together with the first number symbol of the bulb’s designation, based on customary units, may become part of the lamp identification. Thus, using he examples in Table 1, customary-unit lamp identifications are derived from customary-unit bulb designations as follows: Bulb Designation A19C3 T12AG11 PAR38 7.2 Lamp description in metric units As Used in a Lamp Identification A19 T12 PAR38

If a bulb designation is needed as part of a lamp identification, the first letter symbol together with the first component of the first number symbol of the bulb’s designation, based on metric units, may become part of the lamp identification. The slash and the figures to the right of the slash in the first number symbol are dropped. Then the letters SI in parenthesis are added to the lamp identification to distinguish it as a metric designation. Thus, using the examples in Table 2, metricunit lamp identifications are derived from the metric-unit bulb designations as follows:

Bulb Designation A60/29C3 T38/1180AG11 PAR121 REC142x200

As Used in a Lamp Identification A60(SI) T38 (SI) PAR121 (SI) REC142x200

(SI) is not used in the lamp identification for REC bulbs because REC bulbs are available only in metric dimensions, the (SI) notation would be redundant. The REC bulb designation and the REC lamp identification are identical.

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ANSI C79.1-2002 The (SI) term is not used in most dual dimensioning situations employed in many lamp standards. The metric unit is usually placed in parenthesis ( ) to the right of the customary unit; i.e. A19 (A60), T12 (T38), PAR38 (PAR121) and further explanation about the information within the parenthesis is provided to the reader elsewhere in the lamp standard.

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ANSI C79.1-2002

APPENDICES

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ANSI C79.1-2002

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ANSI C79.1-2002 Annex A (informative) Decimal equivalents and metric conversions of existing bulbs It should be understood that these are not direct English-to-metric conversions. They are rounded to be in agreement with commonly-used international bulb designations. This annex includes the official customary, decimal, and metric designations for most commonly-used bulbs. Table 5 should be used as reference and conversion from one set of units to the other is deprecated. Table 5–English-to-metric conversions
CUSTOMARY DESIGNATION A15C3 A15C4 A15E1 A17A5 A19A11 A19C3 A19X1 A21C4 A21G6 A23C5 A23D3 A23E1 A23Z1 A25X1 B6E3 B9A1 B11B6 B12W1 B13C1 B17A1 B17Z1 B17Z3 B21Z1 B23-1/2A1 B28-1/2Z1 BA9-1/2A1 BA10A1 BD17A1 BT25X1 BT28X1 BT28X3 BT37Z5CA1 DECIMAL DESIGNATION SI (METRIC) DESIGNATION A48/29C3 A48/28C4 A48/29E1 A54/29A5 A60/29A11 A60/29C3 A60/29X1 A67/30C4 A67/30G6 A71/30C5 A71/32D3 A71/32E1 A71/32Z1 A79/35X1 B19/14E3 B29/15A1 B34/14B6 B38/14W1 B41/29C1 B54/29Z3A1 B54/29Z1 B54/29Z3 B66/32Z1 B75/42A1 B90/41Z1 BA30/19A1 BA32/18A1 BD54/31A1 BT80/51X1 BT90/51X1 BT90/51X3 BT118/57ZFCA1 CUSTOMARY DESIGNATION BT46Z3 BT56Z1 C7D1 C7Z1 C7-1/2F3 C8A1 C9-1/2Z1 C13Y1 E17B1 E17C1 E18Y1 E25Z1 E25Z2 ED18B1 ED231/2C1 ED23-1/2Z ED28A1 ED28C1 ED28Y2 ED37A1 ED37Y2 ER30Z1 ER40A1 F10D7 F10Z1 F15F1 F15Y1 G6F2 G7-1/2G2 G8H2 G10H2 G14B2 DECIMAL DESIGNATION SI (METRIC) DESIGNATION BT148/57Z3 BT180/57Z1 C22/14D1 C22/14Z1 C24/14F3 C25/14A1 C30/17Z1 C41/28Y E54/29B1 E54/29C1 E57/42Y1 E78/57Z1 E78/57Z2 ED57/41B1 ED75/41C1 ED78/42Z1 ED90/52A1 ED90/51C1 ED90/51Y2 ED118/52A1 ED118/52Y2 ER95/34Z1 ER127/40A1 F32/18D7 F32/19Z1 F48/29F1 F49/28Y1 G18/9F2 G24/14G2 G25/10H2 G32/16H2 G44/15B2

C7.5F3 C9.5Z1C

ED23.5C1 ED23.5Z1C

B23.5A1 B28.5Z1C BA9.5A1

G7.5G2

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ANSI C79.1-2002
CUSTOMARY DESIGNATION G16-1/2K2 G18-1/2C10 G19C3 G25K1 G25K2 G25L2 G30E5 G30L3 G30Y2 G40H3 G40H4 G40P4 G40S1 G40S2 G40V1 G40W3 G48X1 GT19W1 GT19Z1 GT24Y1 P25E2 PS25N1 PS25P5 PS30D12 PS35C14 PS40C2 PS40C20 PS52C5 R12Z1 R20A2 R20Y2 R25B R30B R30C4 R30F1 R40G1 R40R2 R40W3 R52W1 R57X1 R58A1 R80T1 RB30A1 DECIMAL DESIGNATION G16.5K2 G18.5C10 SI (METRIC) DESIGNATION G52/18K2 G59/29C10 G60/24C3 G79/30K1 G79/30K2 G79/34L2 G95/40E5 G95/30L3 G95/35Y2 G128/44H3 G128/44H4 G128/40P4 G128/40S1 G128/40S2 G128/40V1 G128/44W3 G150/44X1 GT60/29W1 GT60/32Z1 GT76/34Y1 P79/30E2 PS79/32N1 PS79/40P5 PS95/40D12 PS110/40C14 PS125/40C2 PS125/40C20 PS165/58C5 R38/16Z1 R63/27A2 R63/28Y2 R79/40B R95/40B R95/34C4 R95/35F1 R125/40G1 R125/40R2 R125/40W3 R165/57W1 R181/57X1 R183/50A1 R252/58T1 RB95/35A1 CUSTOMARY DESIGNATION RB30G1 RB32-1/2Z3 RB40J1 RB40Y2 RB40Z4 RBL38E1 RBL38F1 RD40B1 RD40Y1 RD40Z1 RD52B1 RD57Y3 RD60V1 RD60W1 RD80P1 S6G4 S8G11 S8L5 S8W1 S11L6 S11R2 S11T3 S11X1 S14W1 S14Y1 T6R1 T6-1/2BL1 T6-1/2BN1 T7G3 T7K2 T7M2 T8F2 T8M6 T8V3 T8Z4 T8-1/2A3 T8-1/2J2 T8-1/2J4 T10D8 T11K1 T12GP1 T12GP4 DECIMAL DESIGNATION RB32.5Z3 SI (METRIC) DESIGNATION RB95/30G1 RB104/33Z3 RB125/40J1 RB125/40Y2 RB125/40Z4 RBL120/38E1 RBL120/38F1 RD125/40B1 RD125/57Y1 RD125/40Z1 RD165/57B1 RD181/Y3 RD190/V1 RD190/42W1 RD252/57P1 S19/14G1 S25/15G11 S25/15L5 S25/15W1 S34/16L6 S34/16R2 S34/17T3A8 S34/19X1 S44/28W1 S44/44Y1 T14/15ZG6 T19/15R1 T21/21BL1 T21/9BN1 T22/16G3 T22/16K2 T22/16M2 T25/26F2 T25/16M6 T25/17V3 T25/16Z4 T27/23A3 T27/27J2 T27/20J4 T32/26D8 T35/35K1 T38/38GP1 T38/38GP4

T4.5ZG6 T6.5BL1 T6.5BN1

T8.5A3 T8.5J2 T8.5J4

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ANSI C79.1-2002
CUSTOMARY DESIGNATION T12YT1 T14S1 T14T1 T14.5A1 T16M1 T19E1 T20L5 T20ZP5 T21J2 DECIMAL DESIGNATION SI (METRIC) DESIGNATION T38/38YT1 T44/31S1 T44/44T1 T46/46A1 T51/51M1 T60/28E1 T63/40L5 T63/32ZP5 T66/30J2

T5 T6 T8 T9 T10 T12 T14 T17

FLUORESCENT T16 T19 T25 T29 T32 T38 T44 T54 MR

MR11 MR13-1/4 MR16 PAR16 PAR20 PAR30 PAR36 PAR38 PAR46 PAR56 PAR64

MR13.25 PAR

MR35 MR42 MR64 PAR51 PAR63 PAR95 PAR114 PAR121 PAR146 PAR178 PAR203

REC NONE NONE NONE NONE NONE REC55x135 REC72x40 REC 92x150 REC100x165 REC142x200

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ANSI C79.1-2002

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ANSI C79.1-2002 Annex B (Informative) Related Standards The bulb designations described in this standard are used as part of many individual lamp descriptions in the C78 series of American National Standards. This standard is compatible with IEC 60887-1988, Glass bulb designation system for lamps.

Copyright ? 2002 by American National Standard Lighting Group--NEMA

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