sfork2020
Member
- Location
- Quogue N Y
- Occupation
- Electrician
I need to supply a load letter to the electrical inspector for a laundry mat.The Existing service size is 200 amp three phase 120/208 Fed from a meter bank located outdoors . I took name plate ratting of all appliances as follows
12, 3 phase 19.6/11.0Amps 120/208-240
6, 120 V A/C Amps20.0 / 10 120/208-240
27, washers 208-240 Amps 6.2 phase 1, or 3
All dryers are gas they have a power panel , and a second panel feeding a 60 Amp heat pump 3 phase , and a 3 phase 70 Amp large blower unit with strip heaters.Also they have a 3 phase 100 Amp panel for receptacles lighting and a couple of the washing machines that were added. What is this calculation, and there should be a multiplier of 1.73 I believe this should be correct how does the formula equal to this load or does this service need to be 400 Amp 3 phase ? Looking for the correct formula? Thanks
12, 3 phase 19.6/11.0Amps 120/208-240
6, 120 V A/C Amps20.0 / 10 120/208-240
27, washers 208-240 Amps 6.2 phase 1, or 3
All dryers are gas they have a power panel , and a second panel feeding a 60 Amp heat pump 3 phase , and a 3 phase 70 Amp large blower unit with strip heaters.Also they have a 3 phase 100 Amp panel for receptacles lighting and a couple of the washing machines that were added. What is this calculation, and there should be a multiplier of 1.73 I believe this should be correct how does the formula equal to this load or does this service need to be 400 Amp 3 phase ? Looking for the correct formula? Thanks