- #1
Ahmed Fadl El
- 2
- 0
I have Distribution board, Outgoing (D.B1)
But I got confuse for MCB sizing:
The busbar 400V, 125A, 50Hz, 4P, 10KA for 1Sec.
The part of Outgoing Rates as the followings:
Feeder-1: 2.5 KVA used 25A MCB 2P
Feeder-2: 3.5 KVA used 25A MCB 2P
Feeder-3: 2.0 KVA used 25A MCB 2P
Feeder-4: 1.0 KVA used 16A MCB 2P
Feeder-5: 1.5 KVA used 16A MCB 2P
Onother one (D.B2):
The busbar 230V, 100A, 1PH, 50Hz, 4P, 10KA for 1Sec.
The part of Outgoing Rates as the followings:
Feeder-1: 2 KW used 16A MCB 2P
Feeder-2: 2 KW used 16A MCB 2P
Feeder-3: 2 KW used 32A MCB 2P
Feeder-4: 2 KW used 32A MCB 2P
Feeder-5: 1 KW used 16A MCB 2P
Is the above Rating acceptable, since they used different rate with same load in the D.B2
But I got confuse for MCB sizing:
The busbar 400V, 125A, 50Hz, 4P, 10KA for 1Sec.
The part of Outgoing Rates as the followings:
Feeder-1: 2.5 KVA used 25A MCB 2P
Feeder-2: 3.5 KVA used 25A MCB 2P
Feeder-3: 2.0 KVA used 25A MCB 2P
Feeder-4: 1.0 KVA used 16A MCB 2P
Feeder-5: 1.5 KVA used 16A MCB 2P
Onother one (D.B2):
The busbar 230V, 100A, 1PH, 50Hz, 4P, 10KA for 1Sec.
The part of Outgoing Rates as the followings:
Feeder-1: 2 KW used 16A MCB 2P
Feeder-2: 2 KW used 16A MCB 2P
Feeder-3: 2 KW used 32A MCB 2P
Feeder-4: 2 KW used 32A MCB 2P
Feeder-5: 1 KW used 16A MCB 2P
Is the above Rating acceptable, since they used different rate with same load in the D.B2