If you have two-phase – you need to read this post as 2-phase battery systems have similar issues to 3-phase battery systems. Two-phase means there are two live wires going into your home. Two-phase: Two-phase supplies are rare, but some people have them. If you have single-phase, you can ignore this post and carry on with your day. This means that they have one live wire to their home carrying all their electricity. Single-phase: Most Australian homes have ‘single-phase’ electricity. All grid connected homes in Australia are either: It describes how your home is physically connected to the grid. Three-phase is a type of grid connection. You need to make sure that the battery will work optimally on your three-phase supply. Warning: Some salespeople may look you in the eye and tell you that the battery system will work just fine on your three-phase supply. This post will help you buy a solar battery system that plays nice with your three-phase home. The difference between a 3 phase battery system that reduces your bill on all 3 phases and one that doesn’t is often 2 current transformers (CTs). You just need to check that the one you buy works optimally with your three-phase supply. The good news is: Most battery systems can do this. The bad news is: The wrong (or misconfigured) battery system on a three-phase home will only reduce grid electricity use on the battery’s phase. It is therefore essential that you buy a battery system that is capable of offsetting your grid electricity consumption charges on all three-phases. And with the economic return of battery systems being pretty marginal in even the best case scenario, it is super important that your battery gives you the best returns possible. If you buy the wrong battery system for your three-phase home your electricity bill will not go down nearly as much as you expect.
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