izzit safe to add additional unit aircond at home 
Dec 26 2016, 01:05 PM
QUOTE(darien99 @ Dec 25 2016, 07:42 PM)
currently using 3 units at home, plan to install another unit, will tripping the circuit breaker anot? anyone 
QUOTE(darien99 @ Dec 25 2016, 09:03 PM)
living hall one is 1.5hp, my room 1hp, another room 1.5hp, plan to get another 2hp aircond, normally 2~3 units at the same time, but if got relatives come, will on 4 units at the same time 
breakdown assuming using Acson aircond (the booklet just beside me).1HP = running Amp = 4A
1.5HP = running Amp = 6A
2 HP = running Amp = 10A
total aircond running Current = 26A.
if you factor in fridge, cooker, iron, water heater confirm around 15A. very high possibility will trip if you currently on 40A main breaker
Your breaker size if 40A, then recommended to change to 3 phase 400V. (overall cost confirm more than 3k cause you need to change the whole incoming wiring and pay expensive fee to TNB for upgrading)
NOT RECOMMENDED TO CHANGE TO 60A Single phase breaker unless you double cheek the cable size is sufficient. ( I know some contractor especially aircond will ask you do like this but better not to take the risk)
If your breaker is currently using 60A SP. then should be sufficient
total 6HP =5kW
QUOTE(dapfanbodo @ Dec 25 2016, 08:54 PM)
You install 3phase electric when you need 3phase power equipment not because you need to increase max load of electrical appliances.
Don't simply teach if you donno.
3 phase 60A and 1 Phase 60A have big difference broDon't simply teach if you donno.
3 Phase 60A can take in at least double the electrical load
This post has been edited by squarepilot: Dec 26 2016, 11:02 PM
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