Hello, I need a little help understanding the right way to size an electrical service. I am hearing two ways here at my office and now i really don't know which is the correct way. I think the best way is to explain my situation is to show you the calculation i have come up with and then we can debate whats right and what not.
ELECTRICAL SERVICE LOAD CALCULATION: Fast-Food In Mall Resturant
GENERAL LIGHTS @ 125% = 5,370VA
GENERAL RECEPTACLES @ 100% = 2,280VA
KITCHEN EQUIPMENT @ 65% = 18,635VA
HVAC @ 100% = 3,500VA
VAV ELEC. HEATER @ 100% =19,000VA
NEW DUCT HEATER @ 100% = 30,000VA
LARGEST MOTOR @ 25% = 437VA
TOTAL DEMAND LOAD = 79,222VA
TOTAL DEMAND AMPS = 95.33 AMPS @ 277/480V, 3 PHASE
**Now my question is what size service & MCB do i need?*
Person 'A' at my office is telling me a 100 Amp service (MCB) (the next breaker size up)
Person 'B' at my office is telling me a 125 amp service (MCB) since can not load the circuit breaker more than 80% because 95.33 is way more than 80% you need to go with a 125 amp service....
What do you guys thing??? Thanks for all the help..
ELECTRICAL SERVICE LOAD CALCULATION: Fast-Food In Mall Resturant
GENERAL LIGHTS @ 125% = 5,370VA
GENERAL RECEPTACLES @ 100% = 2,280VA
KITCHEN EQUIPMENT @ 65% = 18,635VA
HVAC @ 100% = 3,500VA
VAV ELEC. HEATER @ 100% =19,000VA
NEW DUCT HEATER @ 100% = 30,000VA
LARGEST MOTOR @ 25% = 437VA
TOTAL DEMAND LOAD = 79,222VA
TOTAL DEMAND AMPS = 95.33 AMPS @ 277/480V, 3 PHASE
**Now my question is what size service & MCB do i need?*
Person 'A' at my office is telling me a 100 Amp service (MCB) (the next breaker size up)
Person 'B' at my office is telling me a 125 amp service (MCB) since can not load the circuit breaker more than 80% because 95.33 is way more than 80% you need to go with a 125 amp service....
What do you guys thing??? Thanks for all the help..