Safe limit for single phase is like 50A total.. thats like a continuous 12kW of electricity usage..
3 phase installation
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 Apr 10 2021, 06:40 PM
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#21
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1,300 posts Joined: Sep 2012 
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Apr 10 2021, 06:43 PM
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6,914 posts Joined: Apr 2007
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QUOTE(ihavenoidea @ Apr 10 2021, 06:40 PM) Safe limit for single phase is like 50A total.. thats like a continuous 12kW of electricity usage.. limit will depend on incoming wire size and hence the size of cut-out fuse installed before the meter |
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Apr 10 2021, 06:56 PM
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384 posts Joined: Mar 2009
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QUOTE(iZuDeeN @ Apr 10 2021, 06:37 PM) yes.. dedicated miniature circuit breaker... dont loop to other equipment Wrong infotnb will always recommend 3phase.. they earn more.. remember each phase will have its own meter ; and it will add up these 3 for u to get ur bill... hence its very difficult to reach the lowest tier unlike on single phase its something you buy RM1mil insurance ; you pay for the high premium.. but will you ever hit your RM1mil hospitalization cost? maybe..or maybe not similar.. will you max out your single phase? maybe or maybe not... |
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Apr 10 2021, 07:10 PM
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#24
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830 posts Joined: Mar 2010
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just recently upgrade, 3.5k
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Apr 10 2021, 07:23 PM
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64 posts Joined: Nov 2007
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QUOTE(slimey @ Apr 10 2021, 06:32 PM) lel.......as if you on everything at the same time. TNB meter burnt, first the internal MCB then TNB. when mcb trip you know you over load a circuit la  My electric appliance Always/ mostly in use 4 AC 2 frigde exaust fan (kitchen when cooking) termo flask ( always on) Microwave ( when cooking) 3 water heater ( shower time only) 2 fish pump 400w (24hrs) 1 x dryer ( day time) 1 x washing machine (day time) 2 x TV (almost 24 hours) 2 Laptops night time 2 spotlights (night motion sensor) Ocassionaly Electric car charger This post has been edited by sdin3269: Apr 10 2021, 09:40 PM |
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Apr 10 2021, 07:23 PM
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QUOTE(jmas @ Apr 10 2021, 07:10 PM) just recently upgrade, 3.5k RM3.5.... from TNB connect to MCB ? |
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Apr 10 2021, 07:40 PM
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QUOTE(sdin3269 @ Apr 10 2021, 07:23 PM) TNB meter burnt, first the internal MCB then TNB. lel..... My electric appliance Always/ mostly in use 4 AC 2 frigde exaust fan (kitchen when cooking) termo flask ( always on) Microwave ( when cooking) 3 water heater ( shower time only) 2 fish pump 20a (24hrs) 1 x dryer ( day time) 1 x washing machine (day time) 2 x TV (almost 24 hours) 2 Laptops night time 2 spotlights (night motion sensor) Ocassionaly Electric car charger layman burn means what? if arcing causing melty plastic it is due to loose connection, not due to over load. |
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Apr 10 2021, 08:00 PM
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QUOTE(slimey @ Apr 10 2021, 07:40 PM) lel..... Have to replace fuse at the TNB meterlayman burn means what? if arcing causing melty plastic it is due to loose connection, not due to over load. |
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Apr 10 2021, 08:08 PM
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QUOTE(sdin3269 @ Apr 10 2021, 08:00 PM) Have to replace fuse at the TNB meter no short circuit in system? no hanky panky noob or fishy installation at mcb box? if installation is proper the indoor mcb should trip to protect the cut-out fuse |
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Apr 10 2021, 08:17 PM
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To change to 3 phase, basically two things need to be done..
1) apply to tnb. Tnb then will pull new 3 phase cabling from their source to your house tnb meter, then tnb will change to 3 phase meter. U need to pay some connection charges and additional meter deposit to tnb 2} your own electrical contractor works. Need to change the cable to 3 phase from tnb meter to your house DB box. Need to change the DB box to 3 phase type. Need to reconnect back all the wiring to the new DB box |
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Apr 10 2021, 08:17 PM
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Duplicate post
This post has been edited by yeapsc73: Apr 10 2021, 08:18 PM |
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Apr 10 2021, 08:34 PM
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64 posts Joined: Nov 2007
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QUOTE(yeapsc73 @ Apr 10 2021, 08:17 PM) To change to 3 phase, basically two things need to be done.. So need to pay also item 1)?1) apply to tnb. Tnb then will pull new 3 phase cabling from their source to your house tnb meter, then tnb will change to 3 phase meter. U need to pay some connection charges and additional meter deposit to tnb 2} your own electrical contractor works. Need to change the cable to 3 phase from tnb meter to your house DB box. Need to change the DB box to 3 phase type. Need to reconnect back all the wiring to the new DB box |
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Apr 10 2021, 08:37 PM
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QUOTE(sdin3269 @ Apr 10 2021, 08:34 PM) So need to pay also item 1)? yes |
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Apr 10 2021, 08:38 PM
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QUOTE(sdin3269 @ Apr 10 2021, 07:23 PM) TNB meter burnt, first the internal MCB then TNB. recommend you to go for 3phase in this case. new ev chargers are 3 phase My electric appliance Always/ mostly in use 4 AC 2 frigde exaust fan (kitchen when cooking) termo flask ( always on) Microwave ( when cooking) 3 water heater ( shower time only) 2 fish pump 20a (24hrs) 1 x dryer ( day time) 1 x washing machine (day time) 2 x TV (almost 24 hours) 2 Laptops night time 2 spotlights (night motion sensor) Ocassionaly Electric car charger how did you get 20a fish pump?? |
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Apr 10 2021, 08:40 PM
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6,914 posts Joined: Apr 2007
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QUOTE(fireballs @ Apr 10 2021, 08:38 PM) recommend you to go for 3phase in this case. new ev chargers are 3 phase cant be 20a la........ how did you get 20a fish pump??  connected with a 20a switch maybe la |
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Apr 10 2021, 08:44 PM
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3 phase , each phase 60 amps is 180 amps, like commercial use, can't overload
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Apr 10 2021, 08:51 PM
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#37
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384 posts Joined: Mar 2009
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QUOTE(fireballs @ Apr 10 2021, 08:38 PM) recommend you to go for 3phase in this case. new ev chargers are 3 phase Not necessary. Got 7kw 1 phase and 22kw 3 phase charger, depends on the car model requirementhow did you get 20a fish pump?? |
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Apr 10 2021, 08:59 PM
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QUOTE(yeapsc73 @ Apr 10 2021, 08:51 PM) Not necessary. Got 7kw 1 phase and 22kw 3 phase charger, depends on the car model requirement 3kw also got |
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Apr 10 2021, 09:08 PM
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#39
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384 posts Joined: Mar 2009
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QUOTE(slimey @ Apr 10 2021, 08:59 PM) 3kw also got Ya this one portable type using 13A plug, probably need to charge half a day |
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Apr 10 2021, 09:11 PM
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Junior Member
42 posts Joined: Feb 2016
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QUOTE(sdin3269 @ Apr 10 2021, 07:23 PM) TNB meter burnt, first the internal MCB then TNB. Just upgrade.... EV fast charging need 3 phase My electric appliance Always/ mostly in use 4 AC 2 frigde exaust fan (kitchen when cooking) termo flask ( always on) Microwave ( when cooking) 3 water heater ( shower time only) 2 fish pump 20a (24hrs) 1 x dryer ( day time) 1 x washing machine (day time) 2 x TV (almost 24 hours) 2 Laptops night time 2 spotlights (night motion sensor) Ocassionaly Electric car charger |
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