- suggestions.- should change the safety and equipment safety.- MCCB 2 3,,, 4 5 should change new.- cables damaged to cut out the damaged parts and the connection, the Cable box ใต้ตู้.3. Feeder that 1 of MDB; MCCB 225 AT /... AF wire size 120 Sq.mm. This circuit power supply to a group home SV2 from current measurement เมื่อเดือน. 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 loads when the need to install air conditioning, size 1 220V, 12 000 BTU, all back.
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