answersLogoWhite

0


Best Answer

I WILL ASSUME 300 IS POWER LOAD (POWER CONSUMPTION) NOT ENERGY CONSUMPTION: SIZING OF BREAKER DEPENDS ON WHAT TYPE OF LOADS UNDER THAT PANELBOARD --- A. SINGLE MOTOR B. TOTAL OF SEVERAL MOTORS C. LIGHTINGS / HEATERS / RESISTIVE LOADS ONLY D. COMBINATION OF ABOVE IN SIZING MAIN CIRCUIT BREAKER WE MUST CONSIDER LOAD CHARACTERISTICS FOR THE SAKE OF ENGINEERING AND ECONOMICS AS WELL. IN DEEPER DESIGN ANALYSIS WE MUST CONSIDER LOAD FLOW ANALYSIS, SHORT CIRCUIT LOAD CALCULATIONS, VOLTAGE DROP / DIP CONSIDERATIONS, MOTOR STARTING METHODS THAT WILL GREATLY AFFECT SELECTION OF BREAKERS AND NOT JUST MULTIPLYING BY THE USUAL --- 125% / 150% / 200% / 250% / 300% ETC., OF FULL LOAD CURRENTS. WE NEED TO CONSIDER ALSO THE LOCKED ROTOR CURRENTS; ARE ALL MOTORS RUNNING AT THE SAME TIME AND THE REALISTIC DEMAND FACTOR SHALL BE DEFINED.

User Avatar

Wiki User

16y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: If you have 300KWh three phase 380 what is your panel board main crcuit breaker?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

Can a Siemens breaker push on be a replacement breaker for a Westinghouse breaker?

only if listed in the panel board


Is it OK to have 250 A of breakers in a 100 A panel?

Yes. Many installations have breaker totals higher that the main breaker of the panel. It is worked on a percentage basis. Not all of the breakers will be on at the same time. In a home, on a 100 amp panel the average load is 50 - 60 amps. The 100 amp main breaker is protecting the 100 amp rated panel board. If the load current goes higher that the panel board is rated at, the main breaker will trip to protect the board.


How important of panel board?

very very importrant of panel board, it has mainly all insstrument save in panel board because it has tmain part one is circuit breaker&grond conectinon.


What is the difference between a run and a circuit?

run in a electrical system means a wiring & conduit runs coming from Panel Board Circuit Breaker to its branch circuit loads in a circuit. while circuit is a designated number of branch breaker in a panel board where power load was individual connected.


What type panel does a 4 pole breaker require?

The panel and breaker have to be of the same manufacturer. This way the breaker will fit into the panel. If the panel has a push in bus bar, the breaker must also be the type to accept the bus bar. If the bus bars in the panel are of the bolt in type then the breaker also has to be a bolt in breaker.


What is installing a circuit breaker?

It is inserting a breaker into a service panel.


Will cutler hammer breaker panel fit a GE breaker?

No, a Cutler Hammer will not work in a GE panel or vice versa.


What size breaker do you use for a 100 amp sub panel?

A 100-A sub-panel would be fed from a 100-A breaker.


If an electrician have a circuit that pulls a load of 10 amps what size breaker must that circuit be protected by?

If you are talking about a breaker in a house panel then a 15 amp breaker would be used. It is the smallest amperage breaker that you will find in a house panel.


What the function of panelboard?

An electrical panel board is a place wherein power generation can be monitored. This is also wherein the generated power is distributed.


What is the smallest size circuit breaker found in the normal home?

The biggest circuit breaker in any home is the main breaker located in your main breaker panel that is installed where your electrical service cable comes into your home.


Will a siemens breaker work in a GE panel?

Possibly. Depends on which model Siemens breaker you have.