New Electrical Service Load Calculations

Location
NJ
How do I calculate the Service Load Calculation, if I only know the square foot and not the Connected Load in kVA.

I have 3 Retail space, which one requires 600 AMP (120/240V/3P), and the other two retail spaces are 2,000 sq/ft and 3,000 sq/ft (120/240V/3P)

Would I use article 220.88 (New Restaurant) but I don't know the connected load since the space is empty and it's for future restaurant/retail.
This location has gas, so it won't be a all electric restaurant/retail

So for Lighting Load I can use Table 220.12 (2,000 sq/ft + 3,000 sq/ft= 6,000 sq/ft)
6,000 sq/ft * 2 = 12,000 VA
I would use 100% of the load based on Table 220.42

How do I determine the approximate Receptacle Load calculation, HVAC, etc
 

topgone

Senior Member
Your VA/sq. ft. multiplied by the square area figure will tell you the required lighting load for the space/building. You have to figure out what your receptacle loads are.
 

James R HIcks

Member
Location
Dallas
Occupation
Electrician
I am trying to calculate a commercial laundry
1) Dryers 5600 kw x 8 = 44,800 / 240v =186.6
2) 8 washers .56 kw .56 x 1000 x8 =4,480 / 120 = 37.33
3) lighting 60 x 8 / 120 =4 amps

With all these listed above loads on my amp meter reads 159.7 where am I going wrong and where is the best step by step example calculation ?
 

James R HIcks

Member
Location
Dallas
Occupation
Electrician
Dryers on high heat and waited until washers were in spin cycle. monitored the amp meter for 30 minutes never over 159 amps
 
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