Renewable Energy and Sustainability Forum
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Anyone wishing to register as a new member on the forum is strongly recommended to use a "proper" email address. Following continuous spam/hack attempts on the forum, "disposable" email addresses like Gmail, Yahoo and Hotmail tend to be viewed with suspicion, and the application rejected if there is any doubt whatsoever
Recent Articles: Navitron Partners With Solax to Help Create A More Sustainable Future | Navitron Calls for Increased Carbon Footprint Reduction In Light of Earth Overshoot Day | A plea from The David School - Issue 18
   Home   Help Search Login Register  
Pages: [1]   Go Down
Author Topic: Breakers/fuses  (Read 2139 times)
dodgy rog
Full Member
Offline Offline

Posts: 123

« on: March 25, 2008, 07:40:22 PM »

hello all, im getting to the point where i have decided to configure my system like this :24V battery bank : 8 pvs 75w configured 4 groups of 2 to give 96v (someone correct me on this please) saving on cable costs run through the outback 60A :with a 24/40/1600 charger/inverter: gonna run all lighting on DC 24V lowenergy bulbs 12v laptop with 24 to 12 stepdown thingy and audio and tvsat system also 24v; will run a few 220vac sockets in house for the inevitable unplannedfor,
hope to add a windturbine say 500w bye next winter

i have worked out my needs to be 91ah at 24v P/D

so my question is now i am thinking of types of fuses breakers good prices suppliers, ideas, kid friendly DC sockets, light switches
and as always i love to keep things simple!

any advice greatfully received rog ;javascript:void(0);
Global Moderator
Hero Member
Offline Offline

Posts: 9073

« Reply #1 on: March 25, 2008, 11:13:59 PM »


donot get me wrong ...... i just have to question it again

i had to have a big pv chargecontroller  because of the 1600 watt  PV and the MPPT MX60 was just ideal for my panels   ( there are others half the price doing their job as well but not at my required Power so i would had to get two )

you donot need an inverter if you stay at dc  ( but like you say you have to use a ac generator to charge the battery as well so a combi unit makes sense if you think you use ac in the house as well)

i just wanted to say both the solar charge controller and the combi inverter  are good choices , but costs in the end are perhaps double ( for the investment) then if you go just for a dump load pv controller ( or a lower A rated mppt controller) and a single charger to use your ac generator

but having a bigger charge controler you can ad on another string of pv later in live..

i just had to say this .....

because i am more or totaly ac in the house  ( i donot want to change your idea of dc , but how do you calculate your benefits of being dc and ac in the house ?)

all the best billi

1.6 kw and 2.4 kw   PV array  , Outback MX 60 and FM80 charge controller  ,24 volt 1600 AH Battery ,6 Kw Victron inverter charger, 1.1 kw high head hydro turbine as a back up generator , 5 kw woodburner, 36 solar tubes with 360 l water tank, 1.6 kw  windturbine
dodgy rog
Full Member
Offline Offline

Posts: 123

« Reply #2 on: March 26, 2008, 06:35:04 PM »


to have the ability to ad more pv later was in mind when i look at the MX60 also i must admit i like the sound of getting the optimum efficiency from my array,and as you have said being flexible with array sitting,  I have to ground mount it here as my roof pitch and orientation is not suitable. so I am pretty shure i am going down this route of pv controller.

as far as the inv/charger  idea goes.......still not shure, thanks for playing devils advocate.
Perhaps some others in the Know could clarify a little the pros n cons of AC or DC in the house i am searching for the correct math to calculate inverter losses and  the difference between ac WH/PD demand and dc WH/PD.

i have already tried to calculate this and it seamed to be that i would have to generate and store nearly half as much power again to run all on AC with an inverter?

also i have two 24v 250ah forklift battery's if i wire them in series it gives 48v and how many ah, if i ran everything on AC with inverter this would help to reduce inv losses wouldn't it?
Pages: [1]   Go Up
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines
SMFAds for Free Forums
Simple Audio Video Embedder
Valid XHTML 1.0! Valid CSS!