treyp3
Member
- Location
- Fernandina Beach Fl
"what size overcurrent protection device is required for a 120/240v service for sizing the overcurrent protection device based on loads where supplying the following loads?"
50a lighting load (continous operation)
42.a receptacle load (noncontinous) demand factors have been applied
35a appliance load (continous)
25 kva heat
motor load 230v 1 phase 10HP
motor load 120v 1 phase 5 HP
motor load 120v 1 phase 2HP
I say 400, the book says 500. The difference came at motor load 5HP. The book thakes the 56a I used and multiplies by 250% = 150a, thus the 100a difference. Please help.
50a lighting load (continous operation)
42.a receptacle load (noncontinous) demand factors have been applied
35a appliance load (continous)
25 kva heat
motor load 230v 1 phase 10HP
motor load 120v 1 phase 5 HP
motor load 120v 1 phase 2HP
I say 400, the book says 500. The difference came at motor load 5HP. The book thakes the 56a I used and multiplies by 250% = 150a, thus the 100a difference. Please help.