VerifyTheFacts

I use Thomson Washers, recently just bought the 3rd one as every five years or so need to replace due to bearing noise but when new is really silent. Will still purchase Thomson again even though last only 5~6 each one for me so far because the washing and drying is really perfect and not matched by any japanese machines which my family used in the past.

Yes, this is time of year where expo sales will be regular affairs and you can really get very good deals for the items you need. TVs are really at rock bottom and crazy prices.

Fully agree but the advice by some member is to turn off the mains to save energy during standby, hence for those who are worried of high standby consumption (true or not nobody knows at this point unless it is listed on product catalog) will naturally listen to such advice and start turning off the mains irrespective of the neccessity. 15A sockets as you rightly indicated can still be used and also correctly noted only at the inside of house hence it is convenient to turn off, which is what was recommended earlier in this thread. What I highlight is the higher risks comparing 15A and Isolator. Considering that the reason for the Isolator to be located near the outdoor unit is meant for service person to turn off the unit for service and not meant for turning off to conserve energy for standby. Also consider the movable parts of 15A socket outlet and plug and Isolator where in the Isolator case, the supply wires to Outdoor unit are firmly screwed into the connectors compared to the 15A socket where the wires are screwed to the Plug and then the Plug is attached to the socket outlet, how many movable mechanical contacts are there (3 pins to 3 springloaded connectors)? Less mechanical movement means less chance of arching when contacts are poor. What I am trying to get at is why try to save a few dollars and put yourself at risk, if energy savings is the priority, use an Electric Fan.

Connecting to an Isolator is a safer option and is a common practice now. Look at all the new condo and HDB apartments, why are they provided with Isolators and not 15A plugs anymore? Poor contacts or moisture can cause arcing/sparking across the connection and worst case can cause a fire if there are some material around to fuel it. If you need to change the aircon, the installer can easily connect it properly into the Isolator.

If you have a System3, I will assume you have 1 system serving 3 rooms, then when the complete system is turn off (all 3 rooms are stop by remotecontrol but mains is still on), only then the standby will apply, if you operates any room unit, the system is now in operations and so it is not considered as standby.

I think your logic is right, it should turn on below 21 instead of above 21.

I would think that before we start switching off equipments, find out actually how much it really consume. Should not risk endangering yourself just because of some hearsay. Aircons are very much different from our TVs and Radios where they are plugged into 13A plugs and meant to be turned off by users but Aircons are high power operating equipments and turning on and off at the circuit breakers does not seem to be a very smart move. If there are real concerns it may be better to seek clarifications from manufacturers and have their advice on record.