main branch cb
DESCRIPTION
Main Branch CBTRANSCRIPT
Sheet2Selection of Main & Branch Circuit Breaker for Distribution Box (As per NEC)Main Circuit Breaker for D.BLoad Detail for Distribution BoxMain & Branch MCCB Rating(min) as per NEC Section:210Continious Load24AmpPole3 or 4Non-Continious Load17AmpSize63 AmpTotal Load as per NEC41AmpClassD ClassTotal Load36AmpJignesh.ParmarTripping (Amp)718 AmpMax. Size of Branch Feeder [email protected]:30maMin.Size of Main MCB as per NEC50Ampwww.electricalnotes.wordpress.comBrea.Capacity6 KAFault Current at this Point (Isc)6KAFeeder NameElectrical Load DetailsCircuit Breaker for Branch FeederCable DetailPhaseVoltP.FLoad (Kw)Type of LoadNature of LoadLoad AmpNEC AmpType of C.BSize (Amp)PoleClassTripping (Amp)Sen.InActualSize (Sq.mm)Length (Meter)Max.Length (Meter)Cable SelectionFeeder-13Ph4400.811.5BallastContinious18.923.6RCCB253 or 4C Class189In:30ma0.22031O.K22311PhLightingB ClassIn:30maContiniousMCB40.132Feeder-21Ph4400.86HeaterNon-Continious17.017.0ELCB201 or 2C Class170In:30ma0.168031Not Proper22113PhHeaterB ClassIn:30maNon-ContiniousMCCB0.1620.00.000000000000DriveC ClassIn:100maMax.MCCBRCB0.220.00.000000000000A.CC ClassIn:30maNECELCB0.2620.00.000000000000MotorC ClassIn:100maTotal AmpRCCB0.3320.00.000000000000BallastC ClassIn:30ma0.4120.00.000000000000Ind.LoadC ClassIn:100ma0.5220.00.000000000000TransformerD ClassIn:100ma0.6520.00.00000000000000.8220.00.00000000000001.0420.00.00000000000001.520.00.00000000000002.530.00.000000000000D Class440.00.0000000000003650.00.0000000000003 or 41060.00.0000000000004401670.00.00000000000002580.00.000000000000In:30ma3590.00.000000000000150100.00.00000000000055107011951212013150141851524016
ADD DETAILSNormally Fault Current220V is 6KA440V is 10KA11KV is 25KA33KV is 35KAJignesh.Parmar
DetailsMCB/ELCB SelectionConversionMaximum Circuit Length in mtr for Cu conductor ( for Alu multiply 0.62)Load Current (Amp)MCB/ELCB SizeAWGmm2Operating Cuurent Im of the Instantaneous Tripping element(A)1.52.5461016253550709512015018524006260.135010016726740016250.16637913321231726240.2806310416725041746230.261005083133200333610220.3312540671071602674271016210.411603152831252083331620200.522002542671001672674172025190.65250203353801332133334672532180.82320162642631041672603654953240171.0440013213350831332082923964045161.550010172740671071672333174550142.55609152436609514920828341750631246308132132638513218525137063801067007121929487611916722633345280100810800610172542671041461982923961001256168756101523386195133181267362457125225425100058132033538311715823331740043522560023511204712183048741041412082833573884596008001501250471116274367941271872533203484118001600O5516005813213352739914619825027232140016002000OO7020004710172742587911715820021725732020003000OOO9525005813213347639312716017420625630003200OOOO1203200461117263649739912513616120032004000OOOO15040005813212940587910010912816040005000OOOO185500047111723324763808710312850006000OOOO240630058131925375063698210260006000800047101620294050546480100005812162332404351641250047913192532354151As per GERCVoltage (Volt)Short Circuit Current (KA)4000000402200004013200032660002533000321100025415102206