Food Hall/Court Service Sizing (NEC 220.88)

[teh_engineer]

Good morning,
I am looking to size the main service for a food hall/court with 9 food tenants, each with their own range, refrigerators, freezers, &c, and have some questions.


1.) Do food stalls within a food court qualify as restaurants under NEC 220.88? They each individually serve food, but they I don't think they qualify as restaurants per se. But the entire food court itself is restaurant like, so would each tenant be considered a kitchen within the greater restaurant?

2.) If so, can multiple tenants be considered as one restaurant for the sake of demand load calculations using NEC 220.88? Alone, each tenant would be about 130A of connected load (with about 100A of the load coming from a 36kW electric water heater), but as there are 9 of them, I'm sure some demand factor can be applied, although around lunch/dinner time, near everything will be operating at full capacity. This would put it in the 326-800kVA tier, so the service size would only be 1000 as opposed to 1200.

3.) Or do the food stalls have to be treated as independent retailers and thus require 100% demand factor (and 1200A service)?


Any insight would be appreciated.
Thanks​

 

[gadfly56]

Good morning,
I am looking to size the main service for a food hall/court with 9 food tenants, each with their own range, refrigerators, freezers, &c, and have some questions.


1.) Do food stalls within a food court qualify as restaurants under NEC 220.88? They each individually serve food, but they I don't think they qualify as restaurants per se. But the entire food court itself is restaurant like, so would each tenant be considered a kitchen within the greater restaurant?

2.) If so, can multiple tenants be considered as one restaurant for the sake of demand load calculations using NEC 220.88? Alone, each tenant would be about 130A of connected load (with about 100A of the load coming from a 36kW electric water heater), but as there are 9 of them, I'm sure some demand factor can be applied, although around lunch/dinner time, near everything will be operating at full capacity. This would put it in the 326-800kVA tier, so the service size would only be 1000 as opposed to 1200.

3.) Or do the food stalls have to be treated as independent retailers and thus require 100% demand factor (and 1200A service)?


Any insight would be appreciated.
Thanks​

Each vendor is going to receive a separate dept of health inspection, so legally I think they are separate.

Given the above, I'd say it's a 1,200 amp service, if that's what you calculated.

 

[kwired]

Doesn't matter if they are separate entities or not. Service or main distribution type feeders will have more variety of loads on them than other feeders and therefore a different set of circumstances than each individual feeder which may allow for different demand factors to be applied.

Would be no different with a large service to some big convention hall (one entity) with multiple commercial kitchens within. Each individual feeder needs calculated to what is connected, each main distribution feeder or service needs calculated to what is connected.

A small kitchen with little cooking appliances may not be able to take much for demand factors, ten identical ones on a common feeder/service can take different demand factors than each individual one can.