they need to know what a facility is capable of to manage and plan power delivery.
But that’s a single value measured in Ampere.
The size in square feet is something completely irrelevant to know.
And even the Ampere value is only relevant for the local provider that connects to your house, not for the company selling you the actual electric energy.
The company selling me electricity knows nothing about me but my electric meter ID.
Lighting load on new construction homes is calculated based on square footage.
That doesn’t even make sense as it treads someone just putting up a single 5W bulb the same as someone having an indoor hemp plantation or heavy machine shop in their basement.
Well the NEC still uses wattages from old incandescent bulbs for general lighting load calcs, plus there’s always a reasonable amount of overspeccing built into the calculation.
You would then add any large loads specifically. Clothes drier, oven, fridge, HVAC, anything that comes with a nameplate wattage rating should be included in the load calc.
Most utilities these days will also just round up to a 200A service for anything larger than a trailer. Big houses would get multiples of 200A services if needed.
But that’s a single value measured in Ampere.
The size in square feet is something completely irrelevant to know.
And even the Ampere value is only relevant for the local provider that connects to your house, not for the company selling you the actual electric energy.
The company selling me electricity knows nothing about me but my electric meter ID.
Lighting load on new construction homes is calculated based on square footage.
That doesn’t even make sense as it treads someone just putting up a single 5W bulb the same as someone having an indoor hemp plantation or heavy machine shop in their basement.
Well the NEC still uses wattages from old incandescent bulbs for general lighting load calcs, plus there’s always a reasonable amount of overspeccing built into the calculation.
You would then add any large loads specifically. Clothes drier, oven, fridge, HVAC, anything that comes with a nameplate wattage rating should be included in the load calc.
Most utilities these days will also just round up to a 200A service for anything larger than a trailer. Big houses would get multiples of 200A services if needed.