Cable size for Inverter

[glynhouse]

Afternoon all we actually got some rain last night thought it had forgotten how up here in FNQ, blokes down south hogging the lot !

What sized cables will I need to power a 1500/3000watt inverter ? maximum length of run from battery to inverter will be around 1 metre.
Don't have the inverter yet but it will be that size, can't see the point in anything smaller already have a hard wired 300/600 that does all I want.
When I fit the 160ah Lithium (if it gets here ? stuck on the road in the rain at present) it opens up a lot more possibility's.
Just thinking about what to do with that spare capacity !

DD

[oldtrack123]

Afternoon all we actually got some rain last night thought it had forgotten how up here in FNQ, blokes down south hogging the lot !

What sized cables will I need to power a 1500/3000watt inverter ? maximum length of run from battery to inverter will be around 1 metre.
Don't have the inverter yet but it will be that size, can't see the point in anything smaller already have a hard wired 300/600 that does all I want.
When I fit the 160ah Lithium (if it gets here ? stuck on the road in the rain at present) it opens up a lot more possibility's.
Just thinking about what to do with that spare capacity !

DD

Hi DD
ON 12V its maxDC current is around250A but its continous rating is only 125A
2mts of 2B&S will give a max voltage drop 0.25V& has a continous current rating [in open air] of 137A so would just be ok
fuse should be no larger than 140 A

You would be loosing 62.5W in cable losses[4% of battery energy lost @ full load]
I would tend to go one gauge largerto 1B&S

PeterQ

[homeless]

Why so small.

You hot water unit will probably be 1400W and then your fridge and computer and the other things you need whilst on the road.

You might want to fill that space where the old batteries came from and double up and then you will have power to spare.

Nothing like the hot shower at night, after a good stew or something in the slow cooker.

When I am having a good day I usually get the slow cooker going to keep it down a bit. I usually let the HW get to just above body temp and then start looking at what I can use to keep it down. The ALDI coffee machine sitting on a table outside and / or the pie maker gets some looks. Especially when they are both going and they can smell them and there is no geni

I hate wasting the solar. I would rather only be 90% SOC at night and have a good meal and a shower.

Realy hot days if I am loafing and don't need a shower I burn it off with the aircon. Always love the looks I get when I come out from having a couple hours under the aircon whilst the others are sweltering in the sun.

Regards
Brian

[oldtrack123]

Why so small.

You hot water unit will probably be 1400W and then your fridge and computer and the other things you need whilst on the road.

You might want to fill that space where the old batteries came from and double up and then you will have power to spare.

Nothing like the hot shower at night, after a good stew or something in the slow cooker.

When I am having a good day I usually get the slow cooker going to keep it down a bit. I usually let the HW get to just above body temp and then start looking at what I can use to keep it down. The ALDI coffee machine sitting on a table outside and / or the pie maker gets some looks. Especially when they are both going and they can smell them and there is no geni

I hate wasting the solar. I would rather only be 90% SOC at night and have a good meal and a shower.

Realy hot days if I am loafing and don't need a shower I burn it off with the aircon. Always love the looks I get when I come out from having a couple hours under the aircon whilst the others are sweltering in the sun.

Regards
Brian

Yes all nice to have BUT,
YOU FORGOT TO TELL HIM HOW MUCH SOLAR [WATTS] CHARGING he would need
REMEMBER , even with lithiums you cannot get more out than has been put in

PeterQ

[Mrcoolabah1au]

Nice one allways love a strong cuppa

[homeless]

Yep it is nice to be able to have the things you want instead of obeying the old school mob with their old fashioned ideas.

Many of us now with the lithiums are able to do things that are still taboo in the eyes of the old techos living back in the swaggy days where they had their broom handle over their shoulder and all their belongings in a scarf.

Soon what we are doing will be available to all. Only needs us to wait the 5 years they wanted so, the many people who have now taken to the technology can have the fun first.

Regards
Brian

[dapope]

got 95mm cable to run from battery to 3000 w inverter.
Hopefully will be heavy enough. supposed to be good for 250amps continuous

[T1 Terry]

got 95mm cable to run from battery to 3000w inverter.
Hopefully will be heavy enough. supposed to be good for 250amps continuous

Shitte, is that the diameter or the radius 85mm sq is 3/0awg and 107mmsq is 4/0awg, so 95mmsq must be somewhere inbetween
EDIT: Fixed my typo, well a fe of them anyway

[dapope]

got 95mm cable to run from battery to 3000 w inverter.
Hopefully will be heavy enough. supposed to be good for 250amps continuous

Shitte, is that the diameter or the radius 85mm sq is 4/0awg and 107mmsq is 4/0awg, so 95mmsq must be somewhere inbetween[
heres the link
http://www.evworks.com.au/index.php?product=ZDU95O
295 amps continuous
95mm2 if that makes any sense

[T1 Terry]

Well that doesn't add up at all It says the conductor is 14mm diameter, the engineering toolbox says 4/0 cable is 11.7mm diameter conductor http://www.engineeringtoolbox.com/awg-w ... d_731.html so 14mm diam conductors must be a greater cross section area than 4/0awg and that's 107sqmm, someone can't do the maths right by the look of it, the areas of a circle is pi x r sq = 3.1417 x 7 x 7 = 154sqmm, so I don't know whether the 14mm dia is wrong or the 95mmsq is wrong. Still, with a continuous rating of 295amps it will do just fine 3000w divided by 13v = 230 amps, plus 10% = 253 amps, the inverter can't pull a continuous load greater than that so you have a bit up your sleeve.