Browse Forums Building A New House Re: Fully electric with solar 3Mar 22, 2023 3:52 pm ![]() Im no sparky or profesionl in this space by any means, but always go three phase if you can. If you ever want to build a workshotp, do welding, have all your appliances on etc you will end up coming up against some problems. at the very least if you get an EV it wont take you forever to charge the thing using single phase There's also a maximum of 5kw per phase feed in to the grid. So if you go single phase and have a large enough system, your pay off wont be nearly as quick via the Feed in Tarif. Hi ponzutwo, thanks for your response, I get what you are saying, better to be save than sorry. cheers, Lynne Re: Fully electric with solar 4Mar 22, 2023 3:56 pm what he said.
apart from solar feed in limitation, there are also limits on how much you can consume through single phase. and while most domestic houses probably will never reach that limit, it's something to be mindful of if you're planning for lots of power hungry things, like traditional/instant electrical water heaters, large aircons, pool pumps etc. the upgrade to 3 phase isn't that much, i think it was under $1000 for us. also allowed us to put 13.3kW solar system in Re: Fully electric with solar 5Mar 22, 2023 3:57 pm go 3 phase. don't get a battery until you live in the house and determine if you will even have much to store after your required use. I have an all electric house with a 12KW system and it is not economical for me to get a battery. Re: Fully electric with solar 6Mar 22, 2023 4:08 pm ![]() go 3 phase. don't get a battery until you live in the house and determine if you will even have much to store after your required use. I have an all electric house with a 12KW system and it is not economical for me to get a battery. thanks sifntdaz, appreciate your feedback, will take it on board, our current home has solar but no battery and we find that we are hardly using any solar during the day (feeding the grid for peanuts) and then drawing all this power at night. cheers Lynne Re: Fully electric with solar 7Mar 24, 2023 10:56 am If you don't have a long run for the power from the street to your house then I would go 3 phase as the upgrade shouldn't be more than $1-2k. The two benefits are: potentially charge an EV 3 times faster than on single phase (quick top up charge) and it allows you to run any machinery/welders that require 3 phase. It's not the end of the world if you don't though. You will be fine regarding usage (unless you want to build a workshop with 3 phase machinery. An EV could still charge at 7kW with a 32 amp circuit. That means it could charge an empty battery to full overnight. As for solar PV feed in restrictions, it's likely that all states will adopt flexible exports (as SA is currently doing) meaning you could export up to 10kW on a single phase. So I wouldn't worry about the feed in restrictions as they currently stand. Re: Fully electric with solar 11Apr 23, 2023 2:17 am In addition to the reasons mentioned above, for anybody else that stumbles across this in future I thought I would add that many induction cooktops require 3 phase power in order to provide the 'boost' functionality of the cooktop and / or run multiple cooking zones. I built an all electric 3 phase house and Henley wired the bosch induction cooktop to 2 phases whilst isolating the rest of the house onto it's own phase. If you have a lot of air conditions, in addition to induction cooking plus all your standard household loads it can pull quite a bit. Finally, one other aspect I haven't seen mentioned is that 3 phase power delivery tends to be more stable. So depending on the number of houses on your street you won't see as much voltage fluctuations when compared to a single phase. Re: Fully electric with solar 12Apr 23, 2023 9:02 am ![]() In addition to the reasons mentioned above, for anybody else that stumbles across this in future I thought I would add that many induction cooktops require 3 phase power in order to provide the 'boost' functionality of the cooktop and / or run multiple cooking zones. I built an all electric 3 phase house and Henley wired the bosch induction cooktop to 2 phases whilst isolating the rest of the house onto it's own phase. If you have a lot of air conditions, in addition to induction cooking plus all your standard household loads it can pull quite a bit. Finally, one other aspect I haven't seen mentioned is that 3 phase power delivery tends to be more stable. So depending on the number of houses on your street you won't see as much voltage fluctuations when compared to a single phase. There was an article in the financial review about this on Friday. The guy was arguing against this theory suggesting its very rare that a household will ever be pulling enough load to warrant 3 phase. Especially newer houses with efficient appliances. Re: Fully electric with solar 13Apr 24, 2023 10:26 am ![]() ![]() In addition to the reasons mentioned above, for anybody else that stumbles across this in future I thought I would add that many induction cooktops require 3 phase power in order to provide the 'boost' functionality of the cooktop and / or run multiple cooking zones. I built an all electric 3 phase house and Henley wired the bosch induction cooktop to 2 phases whilst isolating the rest of the house onto it's own phase. If you have a lot of air conditions, in addition to induction cooking plus all your standard household loads it can pull quite a bit. Finally, one other aspect I haven't seen mentioned is that 3 phase power delivery tends to be more stable. So depending on the number of houses on your street you won't see as much voltage fluctuations when compared to a single phase. There was an article in the financial review about this on Friday. The guy was arguing against this theory suggesting its very rare that a household will ever be pulling enough load to warrant 3 phase. Especially newer houses with efficient appliances. Hi Josh & Eve, thanks for the info, we have decided to play it safe and have 3 phase installed if it is available, would rather be safe than sorry. cheers, Lynne Hi all. I'm thinking of installing an electric gate in front of this street front villa (link below). The gate would be between the bush on the left and the letter box on… 0 3663 9 7754 Hi All, Our current 16 year old ducted gas heating is broken and needs an urgent replacement and appreciate any advise from the industry experts to make a decision for… 0 5127 |