Backup power for R35k - can it be done?

[Tankwa]

The King can blend AC and Solar.

MPP Range @ Operating Voltage30 ~ 115 VDC60~115VDC Maximum PV Array Open Circuit Voltage 145 VDC145 VDC
MPP Range @ Operating Voltage120 VDC ~ 430 VDC Maximum PV Array Open Circuit Voltage 500 VDC

 

[Tankwa]

I'm in a similar boat, and similar budget for now as I've spent who knows how much on home repairs and alterations and am sitting with a few 720W Mecers..

I've tried online power calculators but i'm worried they might not be correct.

Could someone here in the know perhaps comment on what the +/- load would be of the following:
1 x 65" TV, 3 x 42" TVs, 2 x Decoders, 2 x AppleTV, 3 x Wifi Routers, 1x 8-channel CCTV + 8 cameras, 1 x DSC alarm panel/controller, 3 x DSC wireless repeaters, 3 x 22" LED screens, 2 x Laptops, 1 x NUC, 1x Electric fence Energizer, 20 x 5W LEDs.

I'm still stuck between:
1. Getting an electrician to re-wire the 3-phase DB board so lights+plugs are on their own circuit that 1 phase inverter could power OR
2. Getting an electrician to run a separate circuit throughout the house (RED power) coming back to an inverter.

You have a lot of LED TV's.They not so light on juice as what they say they are.

 

[TheChamp]

You have a lot of LED TV's.They not so light on juice as what they say they are.

They are, in fact mine says 150W but consumes around 110 to 115W, could also be the settings affecting the draw.

But it does add up.

 

[wingnut771]

They are, in fact mine says 150W but consumes around 110 to 115W, could also be the settings affecting the draw.

But it does add up.

Brightness/backlight settings make a massive difference. I always drop the brightness down when running on battery.

 

[Lupus]

You have a lot of LED TV's.They not so light on juice as what they say they are.

Actually I can get my 65" down to under 100w by setting the backlight to eco mode, setting it to high will result in it being 150w+ but during load shedding I put it at eco and with my soundbar and a router I'm sitting at 150w.
My 58" in the room with a mistick can be as low as 100w as well.
Throw on my Series X + the soundbar in atmos mode and then I'm hitting almost 500w

 

[RonSwanson]

Can someone help me with math.

My base load at night (everyone sleeping) is about 650w. If I turn off the outside lights I can get down to about 540w. All lights already LED, etc

So assuming a base load of say 800w and my need to run off battery for 10 hours during the night, how many Hubble AM2 would I require?

Assume Hubble AM2s will be fully charged by solar / grid by evening.

During day, I expect solar to run geysers for 2 hours each. Have smart home automation already managing geyser and pool pump runtimes so those will never turn on at night.

Two should see you through.

 

[Willie Trombone]

@OP:

LiFeLnyk 4kW All-In-One Solar Inverter and Battery (Sunsynk Product ) - Solar Supply

Lifelynk All-in-One Hybrid Inverter is a new addition to the Sunsynk range. Value-engineered with customers residing in domestic premises in mind. A 4kW model that can easily slot into an average sized system. Features: Simple to program Straightforward screen design; east to...

solarsupply.co.za

No idea about the supplier but that product looks good - it's a sunsynk product.

 

[Tankwa]

They are, in fact mine says 150W but consumes around 110 to 115W, could also be the settings affecting the draw.

But it does add up.

You can set the back light then it goes down to half.

 

[Tankwa]

Actually I can get my 65" down to under 100w by setting the backlight to eco mode, setting it to high will result in it being 150w+ but during load shedding I put it at eco and with my soundbar and a router I'm sitting at 150w.
My 58" in the room with a mistick can be as low as 100w as well.
Throw on my Series X + the soundbar in atmos mode and then I'm hitting almost 500w

Not sure if anyone has tested the AC/DC led tubes because I get a different watt reading to what it says on the tube.

 

[TheChamp]

@OP:

LiFeLnyk 4kW All-In-One Solar Inverter and Battery (Sunsynk Product ) - Solar Supply

Lifelynk All-in-One Hybrid Inverter is a new addition to the Sunsynk range. Value-engineered with customers residing in domestic premises in mind. A 4kW model that can easily slot into an average sized system. Features: Simple to program Straightforward screen design; east to...

solarsupply.co.za

No idea about the supplier but that product looks good - it's a sunsynk product.

I hate it when they conveniently forgot crucial information, like the size of the battery, just makes the whole thing look scammy.

 

[Tankwa]

I hate it when they conveniently forgot crucial information, like the size of the battery, just makes the whole thing look scammy.

 

[TheChamp]

View attachment 1295016

Thanks, it looks like a good standalone solution but honestly not something to consider if expansion is what you have in mind, I can already see replacing the replacement of batteries being an issue.

 

[DuracellBunny]

@PhireSide You more than welcome me to pm me to assist with some pricing but all in all, leaving out Solar and just mainly back up would set you back around 38k to 45k with all the other miscellaneous items db pre cables and so on. I can have that setup for you so that all you would need to do is follow the labels and instructions so it’s basically a few connections and switch on but I would always recommend getting a sparky if something needs to be done DB side

 

[Tankwa]

Thanks, it looks like a good standalone solution but honestly not something to consider if expansion is what you have in mind, I can already see replacing the replacement of batteries being an issue.

I believe in axpert inverters had mine since 2013 and not one problem with them.

 

[TheChamp]

I believe in expert inverters had mine since 2013 and not one problem with them.

I think the fact that they have not kept up does count against them, my brother has one, it's bulletproof but monitoring Isa problem without wifi.

 

[Tankwa]

I think the fact that they have not kept up does count against them, my brother has one, it's bulletproof but monitoring Isa problem without wifi.

One down side of it but I use the cable

 

[TheChamp]

There's now this, I think it's excellent value for money.

Growatt SPF5000ES 5kva 48V Hybrid Inverter - DIY Geek

Specifications Integrated MPPT charge controller. Equalization charging function. Work with battery or without battery. Maximum PV input voltage up to 450VDC. Configurable grid or solar input priority. Optional WIFI/ GPRS remote monitoring. Available separately Support parallel operation for...

www.diygeek.co.za

 

[Tankwa]

I think the fact that they have not kept up does count against them, my brother has one, it's bulletproof but monitoring Isa problem without wifi.

 

[Gaz{M}]

They blind quote you? Without coming to your house and see how the lay-out is going to be?

Yup, they charge a standard install fee. Why? Do you live on a 800ft cliff?

 

[Gaz{M}]

I understand what you mean but we must be carefull with statement like these
Power use like that can easily be broken if no care is taken
Geyser pulls 2-3kW
Kettles also 2-3kW
Oven also 2-3kW
Stove tops average 1kW each
Microwaves 1.5kW

So if someone does not take those into account then they could easily get issues

But Geysers and stoves are not connected to the inverter?!