Electrical question!

stuffed, Aug 19, 8:27am
We currently have a 32 AMP mains limiter on our meter board and have been trying to get our power supplier to give options to increase it.
Is the next option 64 or is there something in between?
Thanks
johnn, Aug 19, 8:55am
The power cable that supplies your house may not be able to handle more than 32Amps, thus a bigger "mains limiter" cannot be fitted.
stuffed, Aug 19, 9:18am
There is plenty of capacity in the 3 phase supply. Wanting to put in a Tesla charger for the “kids” vehicle’s is the reason!
tweake, Aug 19, 5:30pm
i assume here that you have 32 amp 3 phase supply.
what 3 phase chargers do they make?
stuffed, Aug 20, 9:25am
It sure what you mean by “3 phase chargers”.
Got a response from our power supplier - someone in sales and they did not answer my question.
Meanwhile have got my Sparkie trying to communicate with them!
kitkat66, Aug 20, 3:55pm
You need to get your sparkie to check what cable is feeding your property, either by the pole or underground. Then we can answer your question .IE if you have a 16mm cable, you will be able to upgrade to a 63 amp.
stuffed, Aug 20, 4:23pm
Almost guarantee that it will be that cable size. When we built 36 years ago we had a 24kw heater for the spa plus our current 9 zone electric underfloor heating plus oven etc and everything ran fine. It was about 8 years ago the the power outfit “discovered” that we had 3 phase power and installed the 32 Amp limiter!
The new generation 3 Tesla wall unit is wifi connected has the ability to restrict the amount of power going to the car via the App.
tweake, Aug 20, 5:39pm
is the telsa charger 3 phase or single phase?
what connection does it need? (ie how many amps or what plug does it have).
or do you have the model number of the charger?
vivac, Aug 20, 8:19pm
That is very much dependent on the length of the cable and how it is run.
stuffed, Aug 21, 8:21am
Sorry don’t know the model number but it is single and 3 phase according to the Tesla guy that spoke to when ordering it.
pauldw, Aug 21, 11:00am
Your 3 phase supply is limited to 32A per phase to make it a residential connection. You should be able to charge an EV on that. A higher capacity connection would be charged at commercial rates.
stuffed, Aug 21, 3:44pm
Thanks for that info. All we did was ask Genisis for prices for a higher than 32A supply but a big roar of silence!
tweake, Aug 21, 5:26pm
better give them a call and find out. no point getting something you can't use.
johotech, Aug 21, 6:03pm
The 3 phase tesla chargers can be set to a lower input current by the installer.
6, 8, 10, 13, 16, 20, 25, or 32A.
stuffed, Aug 22, 9:21am
Yes we saw that and not sure but think those options are now available via the App too.
Incidentally the local Tesla approved installer did his apprenticeship under my sparkie!
tweake, Aug 22, 11:27am
that makes it simple then.
wire it in 3 phase, set the current limit to keep under your over all limits. just have to decide how what limit to put on it to allow for household power use as well. no much point blowing the fuses every time you put the oven on (when the car is being charged).

edit; pay to get a sparky to check how well balanced your usage is across the phases.
you don't want one overloaded phase tripping out the entire 3 phase.
stuffed, Oct 5, 4:55pm
Think will have it so that in winter when the time clock turns on the underfloor zones about 4am it will disconnect the Tesla charger.
According to one of our sons this generation 3 charger has the ability for any Tesla vehicle to plug into it and their account will automatically be charged. We the owner of the charger can set the unit rate and be reimbursed by Tesla.
Guess there will be an option to opt out of this for family members.
Not that we intend to establish our home as some sort of vehicle service station!