Ask Experts Questions for FREE Help !
Ask
    cjhalder's Avatar
    cjhalder Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Sep 23, 2011, 04:14 AM
    I have a system with four motor 50 HP, 40 HP, 5 HP, and 7.5 HP. Tell me MCB rating.
    I have a system with four motor 50 HP, 40 HP, 5 HP, and 7.5 HP. Tell me MCB rating for that system.
    tkrussell's Avatar
    tkrussell Posts: 9,659, Reputation: 725
    Uber Member
    		  
    #2

    Sep 23, 2011, 04:26 AM
    What does MCB mean to you?

    Main Circuit Breaker?

    Need to know the voltage of the system to arrive at the amp draw.

    Where are you located? This will help determine which Code or Standard applies.
    sinnadurai's Avatar
    sinnadurai Posts: 127, Reputation: 2
    Junior Member
    		  
    #3

    Sep 24, 2011, 10:23 PM
    What is your country?
    Standard used?. NEC/BS/VDE etc
    Voltage/Frequency? 110/220V,50/60Hz
    Fault level (kA) at switchboard?
    Type of load?. constant,variable,fluctuating,periodical... pump/fan,elevator,compressor,conveyor
    Duty type? AC! 2,3 etc S1,S2,S3 etc
    Type of Load connected to each motor?
    Starter used for each motor? DOL/star-delta(open/closed transition),VSD,Primary R or L,slip ring..
    In your country what is the maximum kW of motor allowed in DOL starting?
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

RUUD Blower Motor Replacement - how important is the FLA rating? [ 1 Answers ]

Motor on my RUUD gas upflow 90% furnace (~10 years old) just fried itself. Grainger has a motor that is equivalent in all ways except one - the full load amps (FLA) rating. The existing motor is a GE 115VAC 1/2hp 1050 RPM model 5KCP39KG R911. The Grainger motor has a FLA rating of 7.8A, and...

Can we use DC MCB designed on 220V DC in 110V DC System? [ 1 Answers ]

Can we use DC MCB designed on 220V DC in 110V DC System?

Green rating system [ 0 Answers ]

What do you understand by green rating system?

What is the difference between a AC MCB and DC MCB?Can I use AC MCB in place of DC MC [ 1 Answers ]

Can I use AC MCB in place of DC MCB

View more questions Search