THERMAL OVERCURRENT RELAYThermal Overcurrent Relay Types TMC GEI-44203 data is not available, take...

GEI-44203AINSTRUCTIONSSUPERSEDES GEI - 44203

THERMALOVERCURRENT RELAY

TypesT MCI1BTMC12BTMC13B

asp**. *

L O W V O L T A G E S W I T C H G E A R D E P A R T M E N T

G E N E R A L E L E C T R I CAP H I L A D E L P H I A , P A .

www.nationalswitchgear.comCourtesy of NationalSwitchgear.com

GEI-44203 Thermal Overcurrent Relay Type TMC

TABLE "A"

FULL LOAD AMPERESFOR 40°C RISE

CONT. RATED MOTORINSTANTANEOUS

UNIT AMPERECALIBRATION

COIL RATINGAMPERES

MODEL FREQUENCY

MIN. MAX. MIN. MAX.50/6050/6050/6050/6050/6050/6050/6050/6050/6050/60

12TMC11B1A 2.42 2.01 2.20 10 4012TMC11B2A 2.65 2.21 102.40 4012TMC11B3A 2.92 2.41 2.65 10 4012TMC11B4A 3.20 2.66 2.90 10 4012TMC11B5A 3.52 2.91 3.20 10 4012TMC11B6A 3.87 3.21 3.51 20 8012TMC11B7A 4.25 3.52 3.86 20 8012TMC11B8A 4.68 3.87 4.25 20 8012TMC11B9A 4.265.15 4.68 20 8012TMC11B10A 5.60 4.69 5.09 20 80

2512TMC11B11A 2.42 2.01 2.20 10 4012TMC11B12A 25 2.65 2.21 2.40 10 40

2512TMC11B13A 2.92 2.41 2.65 10 402512TMC11B14A 3.20 2.66 2.90 10 4025 2.9112TMC11B15A 3.52 3.20 10 4025 3.8712TMC11B16A 3.21 3.51 20 8025 4.25 3.52 3.8612TMC11B17A 20 80

4.6825 3.87 4.25 2012TMC11B18A 8025 5.15 4.26 4.68 2012TMC11B19A 8025 4.695.60 5.09 20 8012TMC11B20A

TABLE FOR SELECTING PROPER MODEL NUMBER OF TYPE TMC11B RELAY

2


THERMAL OVERCURRENT RELAYTYPES TMC11B, TMC12B, AND TMC13B

INTRODUCTIONType TMC single pole thermal overcurrent re-lays provide both instantaneous and thermal overloadprotection for motors with compensationfor changesin relay ambient temperature. It consists of aninduction thermal unit, and instantaneous unit anda universal seal-in unit and target coil (see Fig. 1).Both the thermal and instantaneous units haveindependent open contacts with separate trargets(the seal-in unit is energized by the closing of thethermal unit contacts). The thermal unit contactsare hand reset while the instantaneous unit contactsare self -reset. The two targets are reset by thesame mechanism which resets the thermal unitcontacts.

This cradle is held firmly in the case with a latchat the top and the bottom and by a guide pin atthe back of the case. The case and cradle are soconstructed that the relay cannot be inserted inthe case upside down. The connecting plug, besidesmaking the electrical connections between the re-spective blocks of the cradle and case, also locksthe latch in place. The cover, which is fastened tothe case by thumbscrews, holds the connectingplug in place.To draw out the relay unit the cover is firstremoved, and the plug drawn out. Shorting barsare provided in the case to short the current trans-former circuits. The latches are then released,and the relay unit can be easily drawn out. Toreplace the relay unit, the reverse order is fol-lowed.

The thermal unit consists of a current coilplaced over a bi-metal helix that acts as the short-circuited secondary of a transformer. The currentheats the helix causing it to rotate in a direction toclose the hand reset contacts. Tripping current isadjustable from 90 to 110 percent of coil rating.The contacts cannot be reset until the unithas cooledfor a time.

A separate testing plug can be inserted in placeof the connecting plug to test the relay in place onthe panel either from its own source of current, orfrom other sources,drawn out and replaced by another which has beentested in the laboratory.

Or, the relay unit can be

The instantaneous unit is the small hinge-typeunit mounted on the right front side of the relay.It operates over a 4 to 1 range and has its calibra-tion stamped on a scale mounted beside the adjust-able pole piece.The relay case is suitable for either surface orsemiflush panel mounting and an assortment ofhardware is provided for either mounting. Thecover attaches to the case and also carries thereset mechanism.

APPLICATIONThe Type TMC relays are not intended for usedirectly in primary circuits. It should always beused with current transformers. It is self -protect-ing on primary short circuits because the CT willsaturate before excessive secondary currents arereached.For standard 40°C continuous rated motors(which have 115 percent service factor), the relayshould be selected so that the full load current ofthe motor falls between the minimum and maxi-mum values of full load amperes on Table "A".For 50°C or 55°C continuous-rated motors(which do not have 115 percent service factor)

multiply the motor full-load amperes by 0.9 anduse this value to select the relay.

For 0.8 power factor synchronous motors withconstant field excitation and driving d-c generatorsrated 150 percent load for two hours, obtain themotor armature current at 150 percent load on thegenerator from the motor data sheet, multiply by0.9, and use the value to select the relay. If the

The case has studs or screw connections atthe bottom only for the external connections. Theelectrical connections between the relay units andthe case studs are made through spring backed con-tact fingers mounted in stationary molded innerand outer blocks between which nests a removableconnecting plug which completes the circuits. Theouter block, attached to the case, has the studs forthe external connections, and the inner block hasthe terminals for the internal connections.The relay mechanism is mounted in a steelframework called the cradle and is a complete unitwith all leads being terminated at the inner block.

These instructions do not purport to cover all details or variations in equipment nor to provide for every possiblecontingency to be met in connection with installation, operation or maintenance. Should further information be desiredor should particular problems arise which are not covered sufficiently for the purchaser’s purposes, the matter shouldbe referred to the General Electric Company.

3


GEI-44203 Thermal Overcurrent Relay Type TMC

MOUNTING SCREWSFOR RETAININGPLATE

OPERATING COIL

SCALEPLATE

ADJUSTABLEPOLE PIECETARGET.TARGET

SEAL-INUNIT ~

INSTANTA-NEOUS UNIT

RESET ROD

o>CT>a2

01u.

Fig. 1 Type TMC! IB He!ay Withdraw From Case

RETAININGPLATE

STEELCORE

minRIBIMETAL

HELIXOl

m ioi

u.

MOVABLECONTACTBRUSH

COMPENSATINGBIMETAI

ADJUSTMENTLOCKINGSCREW

ADJUSTINGSCREW

STATIONARYCONTACT —BRUSH

CONTACTTERMINALS

Fig. 2 Thermal Unit With Current Coil and Reset Rod Removed4


Thermal Overcurrent Relay Types TMC GEI-44203data is not available, take the motor full load arma-ture current, multiply by 1.16, and use this valueto select the relay. (The motor current at 150percent load will be about 133 percent of full loadvalue. Division of 133 percent by 115 percentgives 1.16).

For 0.8 power factor synchronious motors withconstant field excitation and driving d-c gener -ators rated 125 percent load for two hours, obtainthe motor armature current at 125 percent load onthe generator from the motor data sheet, multiplyby 0.9, and use this value to select the relay. Ifthe data is not avaliable, select a relay the sameas for standard 40°C continuous-rated motors (themotor current at 125 percent load will be about 115percent of the full load value).For intermittent rated motors, or for motorsdesigned for use in higher temperature or altitudes,relays should be selected in accordance with thecharacteristics of the motor and the application.Table "A" gives the permissible applicationrange in full-load amperes for 40°C rise motorswith 115 percent service factor and the corres-ponding rated coil amperes. The coil rating is theapproximate value at which the relay will ultimatelytrip in a 40°C ambient, with the relay calibrationset at 100 percent, and is equal to 110 percent ofthe maximum full-load amperes. If the motor full-load amperes are equal to the minimum value in theapplication range, then the nominal trip value of therelay will be approximately 120 percent of fullload. If the full load amperes are equal to themaximum value, the nominal trip value will be ap-proximately 110 percent of full load. The relay canbe adjusted from 90 to 110 percent of these values.

Ratings of forms 1 through 10 of the Type TMC12Brelay correspond to forms 1 through 10 respectivelyof the Type TMC1 IB relay.Type TMC13B relay is available for 60 cycles

in current ratings from 2.20 to 3.52 ampres with20/80 ampere instantaneous unit, and from 3.87 to5.60 amperes with 20/80 ampere instantaneous unit.Rating of forms 2 through 11 of the Type TMC13Brelay correspond to forms 1 through 10 respectivelyof the Type TMC1IB relay. The rating of Model12TMC13B1A relay is 2.20 ampres with 10/40 am-pere instantaneous unit. Its minimum and maximumfull load amperes for 40°C are 1.82 and 2.00 am-peres, respectively.The current-closing rating of the contacts is 30amperes for voltages not exceeding 250 volts. Thecurrent-carrying ratings are affected by the selec-tion of the tap on the seal-in unit coil as indicated inthe following table:

Amperes^ AC or DCFunction 2-Amp Tap 0.2 Amp TapTripping DutyCarry Continuously

30 53 0.3

The 2-ampere tap has a d-c resistance of 0.13ohms and a 60 cycle impedance of 0.53 ohms whilethe 0.2-ampere tap has a 7 ohm d-c resistance and52 ohm 60 cycles impedance. The tap setting used onthe seal-in unit is determined by the current drawnby the trip coil.

The 0.2-ampere tap is for use with trip coilsthat operate on currents ranging from 0.2 up to 2.0amperes at the minimum control voltage. If this tapis used with trip coils requiring more than 2 amperes,there is a possibility that the 7-ohm resistance willreduce the current to so low a value that the breakerwill not be tripped.

The 2-ampere tap should be used with trip coilsthat take 2 amperes or more at minimum controlvoltage, provided the tripping current does not exceed30 amperes at the maximum control voltage. If thetripping current exceeds 30 amperes, an auxiliaryrelay should be used, the connections being such thatthe tripping current does not pass through the con-tacts or the target and seal-in coil of the protectiverelay.

For 50°C and 55°C rise motors, applicationof the 0.9 multiplier essentially reduces the nominaltrip point another 10 percent.Type TMC11B relay has a time-current curve(Fig. 5) suitable for use with most general purpose

a-c motors, and may be used for either 50 or 60cycle supply. Type TMC12B relay has a longertripping time (Fig. 6) than the Type TMC11B relay,and may be used with motors having a relativelylong accelerating time if the motor characteristicsare such that the curve of Fig. 6 will provide ad-equate motor protection. Type TMC13B relay isa fast tripping relay suitable for applications wherethe motor heats rapidly under stalled conditions.Time-current curve for Type TMC13B is shownin Fig. 7.

BURDENSINSTANTANEOUS UNIT

Burden data on the instantaneous unit coils aregiven in the following table:

RATINGSType TMC11B relay is available for 25 and

50/60 cycles in current ratings from 2.42 to 3.52amperes with 10/40 ampre instantaneous unit andfrom 3.87 to 5.60 amperes with 20/80 ampereinstantaneous unit. See Table "A".

Type TMC12B relay is available for 60 cyclesin current ratings from 2.42 to 3.52 ampres with10/40 ampere instantaneous unit, and from 3.87 to5.60 amperes with 20/80 ampere instantaneous unit.

Volt-Amp

Imp.Ohms PFCoil Freq. Amp

0.83 0.0330.0320.0270.0080.0080.007

0.9560 510-400.950.805500.980.6525 50.95560 0.2120-800.950.205500.980.15525

5


GEI-44203 Thermal Overcurrent Relay Types TMC

INDUCTIONUNIT

INST.UNIT

INST.UNIT

ooooy* \ / # y* \j/ sf: \ f —— f V V 00I1

i 1 I3 5

V 37 00

P o o42 6 8

u.SHORT FINGER

Fig. 3 Internal Connections for Type TMCI IB, TMCI 2B and Type TMCI3B Relays

A-C BUSTRIP BUS2 ( + )

oo3ioIN3 iU 49 oo-

-L49T~ T2 n *

ST -7- 50 Ol

t u»44-HJ « " ' X1 5 _ 5 25-1 4 9 4 9 £L 6A6 ft7 7

5 0 5 08 8

(-)1

LEGEND49 TYPE TMC RELAY51 SEAL IN UNIT50 INSTANTANEOUS UNIT52 CIRCUIT BREAKERTC TRIP COIL

a AUXILIARY CONTACT, CLOSEDWHEN BREAKER IS CLOSEOL

MOTOR

Fig, 4 Typical External Connections for Type THCIII Relay

6


Thermal Overcurrent Relay Types TMC GEI-44203THERMAL UNIT Types TMC11B and TMC12B relays.

For Type TMC11B nd TMC12B relays, the volt-ampere burden of the thermal unit at 5 amperes isapproximately equal to K divided by the square ofthe current rating, where K is 325 for 25 and 60cycles and 305 for 50 cycles. For Type TMC13Brelays, the volt-ampere burden of the thermal unitat 5 amperes is approximately equal to K dividedby the square of the current rating where K is 295.

For Type TMC11B and TMC12B relays, theburden of the thermal unit at rated current is ap-proximately 13.5 volt-amperes and 12 watts for 25and 60 cycle operation or approximately 12.5 volt-amperes and 11 watts for 50 cycle operation. ForType TMC13B relays, the burden of the thermalunit is approximately 10 percent higher than for the

RECEIVING, HANDLING AND STORAGEThese relays, when not included as a part of acontrol panel will be shipped in cartons designed toprotect theni against damage. Immediately uponreceipt of a relay, examine it for any damage sus-tained in transit. If injury or damage resulting fromrough handling is evident, file a damage claim atonce with the transportation company and promptlynotify the nearest General Electric Apparatus SalesOffice.

ing the relay in order than none of the parts areinjured or the adjustments disturbed.

If the relays are not tobe installed immediately,they should be stored in their original cartons in aplace that is free from moisture, dust and metallicchips. Foreign matter collected on the outside ofthe case may find its way inside when the cover isremoved and cause trouble in the operation of therelay.Reasonable care should be exercised inunpack-

INSTALLATIONLOCATION Fig. 8.

r The location should be clean and dry, free fromdust and excessive vibration, and well lighted tofacilitate inspection and testing.

CONNECTIONSThe internal connections for the Type TMC

relays are shown in Fig. 3. Atypical wiring diagramis shown in Fig. 4. One of the mounting studs orscrews should be permanently grounded by a con-ductor not less than No. 12 B&S gage copper wireor its equivalent.

MOUNTINGThe relay should be mounted on a vertical sur-

The outline and panel diagram is shown inface.

OPERATIONcent. Use Model 12TMC11B8A rated 4.68 amperes,50/60 cycles thermal unit, 20/80 amperes instan-taneous unit. The thermal unit has a nominal trippoint of 4.68 amperes adjustable from 90 percentto 110 percent or 4.21 to 5.15 amperes. This cor-responds to 108 to 131 percent of full load allowingoperation at 115 percent continuously if desired.

If this were a 55°C motor, the current valueto be used for selecting the relay would be 3.92x.9 or 3.53 amperes. Use Model 12TMC11B7A rated4.25 amperes. The nominal trip point is adjust-able from 98 to 119 percent of full load allowingoperation at 100 percent continuously.

For both motors, the instantaneous unit set-ting would be 3.92 x 5 x 1.6 x 1*1 = 35 amperes.

The instantaneous unit should be set at about1.6 times the maximum (110 percent normal volt-age) locked rotor current of the motor. Since therequired setting would seldom be less than 5 timesor more than 12 times full load current, the relaysrated from 2.42 to 3.52 amperes are provided with10/40 ampere units and the 3.87 to 5.60 ampere re-lays are provided with 20/80 ampere units.

The relays are tested at 100 percent calibra-The relay when hot, is tested to hold (non-tion.

operative) at 90 percent of its coil rating and tripat 100 percent. Thus, an individual relay may varyas much as 10 percent in its calibration; i.e., anindividual relay may trip at 90 percent of its coilrating with the adjustment screw set at 100 percent.

Standard 40°C motor, full voltageExample:started, 60 cycle, full load current 3.92 amperes(CT sec.) maximum locked rotor current 500 per- The

average time-current characteristic curvefor this relay is shown in Fig. 5.

7


GEI-44203 Thermal Overcurrent Relay Types TMCoOO

700

,60 CYCLES

600

toUJocUJ

2500

oooUJ

2 400ocasUJ

ctUJ

“ 300

CO

toco200to

to

cn100LU2010 30 40 50 60 70 80 90 100

S ££0ND TO TRIP200 300 400 500 600 800 100 C

Fig* 5 Average Time-Current Characteristic Curve for Type TMC11B Relay

800

r*°"04700CO3

600tOtnui

ocf3UI

01a-1Z '

S

500—iooOUJ

2 400

uioocUJa. 300

200

10050002000 30001000600 800200 300 4001008020 SO 40 50 6010

4000500 700 90070 90

SEC0NOS TO TRIP

Average Time-Curre«t Characteristics Curve for Type TMCI2B RelayFig. 68


Thermal Overcurrent Relay Types TMC GEI-44203MAINTENANCE

The relay has been adjusted at the factory andit is advisable not to disturb the adjustments. It ismost important that the bimetal helix and the com-pensating bimetal should never be tampered with atany time.

Upon leaving the factory, the relay is set forthe 100 percent calibration. If it is desired to adjustthe relay to trip at a slightly higher or lower valueof current, loosen the adjustment locking screw(see Fig. 2). Then the adjustingscrew can be turnedto provide the desired adjustment. Be sure to tight-en the adjustment locking screw.

5. Tighten the three mounting screws.8. Connect coil leads to terminals 5 and 6.CC CONTACT CLEANINGFor cleaning fine silver contacts, a flexible

burnishing tool should be used. This consists of aflexible strip of metal with an etched roughenedsurface, resembling in effect a superfine file. Thepolishing action is so delicate that no scratchesleft, yet corroded material will be removed rapidlyand thoroughly. The flexibility of the tool insuresthe cleaning of the actual points of contact. Some-times an ordinary file cannot reach the actual pointsof contact because of some obstruction from someother part of the relay.

are

To substitute a new current coil in the thermalunit, the procedure should be as follows:

1. Remove coil leads from terminals 5 and 6.2. Loosen the three mounting screws and re-move the retaining plate (see Fig. 2).3. Lift out the present coil and substitute the

replacement taking care that the coil is mountedwith the two locating pins on the lower side.

4. Replace the retaining plate so that it restssquarely against the end of the core.

Fine silver contacts should not be cleaned withknives, files or abrasive paper or cloth. Knives orfiles may leave scratches which increase arcingand deterioration of the contacts. Abrasive paperor cloth may leave minute particles of insulatingabrasive material in the contacts and thus preventclosing.

The burnishing tool described above can beobtained from the factory.

RENEWAL PARTSIt is recommended that sufficient quantities of nearest Sales Office of the General Electric Company,

renewal parts be carried in stock to enable the specify quantity required, name of part wanted,prompt replacement of any that are worn, broken and give complete nameplate data, including serialor damaged. number. If possible, give the General ElectricCompany requisition number on which the relay was

When ordering renewal parts, address the furnished.oo3 60oo CYCLE=*

Ol

u.\600coUJ£

CL.1 \500

\88£C£

H;UJO

UJ

200

100200 ?00 400 6C0 9004 5 6 7 8 9 10 20 ?0 40 50 60 70 8090100

SECCNC6 TO TRIP

Time-Current Characteristic Curve for Type TMCI 3B RelayFig0$7'*5 9


GEI-44203 Thermal Overcurrent Relay Types TMC

PANEL LOCATiONSEMI-FLUSH SURFACE

MTG.

64 6I6I'H0 l 54!£(Qh i £L:GOCT> 4-18 STUDS16 FOR

SURFACEMTG.

C\Ji 3/JZT.ZZZ

13 5 7 9o ooo ol o o o o o Jv—2 4 6 8 IOyNUMBERING OF STUDS

( FRONT VIEW)

5LL 10- 32 SCREW 53(OR STUD) §I d 1 4.i

OUTLINE

y> ! 1032*IMTG.SCREW a®8 aooiu.

7 2723232 32321ADRILL^4 HOLES VI IX< DRILL10 HOLESr*’ 05 OJm ro CASE1 V LLJrO|£ r *

O/ =Q

-a» sy

OJ

f PANEL1 froj^£ 3E2 a>loiOJ 4-18 STUD 1161 I -J:_ !&© a:3QOasPANEL DRILLING FOR SEMI-FLUSHMOUNTING (FRONT VIEW)

4 I 34.1ill 14141» 4 O2*8-2SLr 83 54PANEL DRILLING FOR SURFACE

MOUNTING (FRONT VIEW)uVIEW SHOWING ASSEMBLY OF

HARDWARE FOR SURFACE MTG-ON STEEL PANELS

Fig. 8 Outline and Panel Drill ing for Types TMCIIB, TMC! 28 and TMCI 3B10


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420 Madison Ave.Des Moines 12, IowaDetroit 2, MichDuluth 2,MinnElmira, N. Y.. . Main & Woodlawn Aves.

215 No. Stanton

'.214 E. Hanover St.Milwaukee 3, Wise..Minneapolis 3, Minn.Mobile, AlaNashville 3, Tenn.. .Newark 2, N. JNew Haven 6, Conn.New Orleans 12, La,

Tulsa 3, OklaUtica 2, N. YWashington 5, D. C.Wheeling, W. Va.. .Wichita 2, Kan.. . .Worcester 5, Mass..York, PaYoungstown 7, Ohio

El Paso, TexasErie 2, Pa.. .. 1001 State St.Eugene, Ore P.O. Box 352, 1170 Pearl St.

P.O. Box 1 57312 N.W. Seventh St.

P.O. Box 1626310 Jacobs Bldg.

Evansville 5, Ind.Newport News, VaFairmont, W. Va,

Canada: Canadian General Electric Company, Ltd., TorontoHawaii: American Factors, Ltd., P.O. Box 3230,Honolulu 1

GENERAL ELECTRIC SERVICE SHOPSparts are used to maintain peak performance of your equipment. Forfull information about these services, contact your nearest serviceshop or sales office.* Denotes Aircraft Service Shops

WHEN YOU NEED SERVICE . . . These G-E service shops will repair,recondition, and rebuild your electric apparatus. The facilities are

-available day and night, seven days a week, for work in the shopsor on your premises. Latest factory methods and genuine G-E renewal

Dallas, TexasDavenport, Iowa. . . .

3400 Wood St.Ont. Int’i Airport

, 1 040 E. Erie Ave., 6519 Penn Ave.370 Atwater St.

. . .2727 N.W. 29th Ave.1403 Ingram Ave.

115 Albermarle Ave., S.E.. 99 N. 17th St.

1115 East Rd.

Oakland, Calif*Ontario, CalifPhiladelphia 24, Pa.Pittsburgh 6, Pa.. . .Plantsville, Conn.. . ,Portland 10, Ore.. .Richmond 24, Va.. .Roanoke 7, VaSacramento, Calif..

. .3202 Manor WayP.O. Box 6301039 State St.. . , 3353 Larimer St.

. . . . 5950 Third Ave.606 W. Superior St.. . . 1062 E. 28th St.

Houston 20, Texas. . . .5534 Harvey Wilson Dr.. .1740 W. Vermont St.

841 Oak St.. . . .3525 Gardner Ave.. . . .6900 Stanford Ave.. . .3900 Crittenden Dr.. .3404 Bankhead Hwy.

. . .940 W. St. Paul Ave.2025 49th Ave., N.

. ,2815 N, Robertson St.New York-N. Bergen,N. J...6001 Tonnelle Ave.*New York-Linden,N.J..1611 W, Elizabeth Ave.

1097 Central Ave.668 E. Highland St.

Midway Industrial Area,County Trunk (P), P.O. Box 83.. .5035 Peachtree

Indus. Blvd.P.O. Box 526...920 E. Fort Ave.

. .7-18th St., S.W.3960 Mystic

Valley Pkwy.318 Urban St.

Charleston 28,W.Va.. .306 MacCorkle Ave.,S.E.2328 Thrift Rd.

...4360 W. 47th St.444 W. Third St.

260 W.Mitchell Ave.4966 Woodland Ave.

2128 Eakin Rd.115 Busse St.

Albany, N. YAllentown, Pa.. .Appleton, Wise.Atlanta-Chamblee, Ga

Denver, Colo..Detroit 2, Mich.Ft. Wayne, IndHialeah, Fla...*Arkansas City, Kan

Baltimore 30, MdBirmingham, AlaBoston-Medford 55, Mass. wIndianapolis 22, IndJohnstown, Pa St. Louis 10, Mo

Salt Lake City 4, Utah. . .301 S. Seventh W. St.San Francisco 3, Calif

Kansas City 20, Mo..Los Angeles 1, Calif..Louisville 9, KyMidland, TexasMilwaukee 3, Wise.. .Minneapolis 12,Minn,New Orleans, La....

Buffalo 11, N. Y 1098 Harrison St.. . . 3422 First Ave., S., . . . . 220 Dawson St.. .S. 155 Sherman St.

P.O. Box 1245, .405 Dearborn Ave.. . . 54 N. Harrison St.272 E. Indianola Ave.

Seattle 4, Wash.. .*$eattle 8, Wash..Spokane 3, Wash..Tampa 1, FlaToledo 4, Ohio. . . .York, PaYoungstown 7, Ohio

Charlotte 8,. N. C...Chicago 32, IIICincinnati 2,Ohio...^Cincinnati 3, Ohio. .Cleveland 4, Ohio.. .Columbus 23, Ohio. .-Corpus Christi, Texas

V.s. A-GENERAL ELECTRIC COMPANY, PHILADELPHIA, PA.12* 56


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