load calc multi family

[bobbymari]

Question regarding load calc. I have come up with a 592 amp calculation for a multifamily dwelling. Question is this. Are we good at a 600 amp service or do I have to calculate the overcurrent protection at 80%.
We are going to be nowhere near 600 amps but are calculating based on future plans

 

[Smart $]

Question regarding load calc. I have come up with a 592 amp calculation for a multifamily dwelling. Question is this. Are we good at a 600 amp service or do I have to calculate the overcurrent protection at 80%.
We are going to be nowhere near 600 amps but are calculating based on future plans

You only have to "calculate the overcurrent protection at 80%" if all your loads are continuous.

Though it is possible, dwelling units seldom have any loads that are continuous.

Given the monthly charge of my electric bill, I have to wonder about that. :happyyes: But in reality, the delivery charge portion nowadays is more than what my entire bill use to be years ago.

 

[bobbymari]

You only have to "calculate the overcurrent protection at 80%" if all your loads are continuous.

Though it is possible, dwelling units seldom have any loads that are continuous.


Given the monthly charge of my electric bill, I have to wonder about that. :happyyes: But in reality, the delivery charge portion nowadays is more than what my entire bill use to be years ago.

Thank you. Bumping up to 800 when not necessary creates a whole other animal with local poco. Awesome

 

[charlie b]

I have come up with a 592 amp calculation for a multifamily dwelling.

The calculation process should have already taken into account the additional 25% for any continuous loads. So I agree that a 600 amp service is acceptable.