3. Feeder that 1 of MDB; MCCB 225 AT /... AF wire size 120 Sq.mm. Power supply to a group home SV2 and from current measurement when the month. August 2558 as follows: Phase A = 9.5A Phase B = 4.9A Phase C = 8.8 A Distribution Panel and within the home SV2 separately by the following details- Student Village 2 (Single) were 84 room air conditioning installation size,,, 1 220V 12 000 BTU number 1 machine.- Student Village 2 (Married) were 12 room air conditioning installation size,,, 1 220V 12 000 BTU number 2 machine.- from the data using air conditioning, the 1 220 V 84 + (2 x 12) = 108 machine.The air conditioning Mitsubishi Trane size, and 1 220 V. 12 000 BTU,, Use of electricity while walking machine 5.3 A (Max), so air conditioning 108 appliances electricity 1 220 V = 5.3A X 108 = 572.4A. Average electricity 3 = 572.4 3 = 190.8 A / Phase.- from the data Main Breaker Feeder, that 1 MCCB 225 AT can load and wire size 120 Sq.mm. Walk is embedded in the metal pipe (228A). Also can get the load when using air conditioning, size 1 220V, 12 000 BTU, all back.- suggestions.- Safety Distribution Panel within a group home SV2 should make a safety Main Distribution answer Main from safety MDB and Branch to pay home each building.- Safety Main Distribution Panel from Lay - out group home SV2 should install the safety Main Distribution into 2 series.The 1 for home SV31 32 33 34,,,,,,, 35 36 37 38 39 40,,,The 2 for home SV 21 22 23 24,,,,,,, 25 26 27 28 29 30,,,
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