Fitting an inverter question

[izwozral]

I am fitting a 2100w inverter from 2x 90amp batteries totalling 180amps, there is no inline fuse on the supplied positive cable and I am unsure what size fuse to buy. Looking at the cable rating chart I am guessing a 150amp inline fuse, is this correct?

 

[vwalan]

dare say there is a fuse built in to the inverter . there certainly is on the ring inverters i use.
mind thats a bit big for those batteries hope you dont flat them.

 

[colinm]

mind thats a bit big for those batteries hope you dont flat them.

Or the other way of putting it, use the invertor for more than a couple of minutes and it will kill the batteries stone dead.

 

[delicagirl]

why do you want an inverter ?

 

[izwozral]

Bugger, that's what I get for buying the inverter before checking the batteries. Must admit, I was surprised when I saw the batteries were only 90amp each, was expecting something a bit beefier.
Oh well, need to decide, do I upgrade the batteries or buy a new inverter? Could always sell the inverter I suppose, it's a Ring like VWAlan uses.

Thanks guys.

 

[trevskoda]

Is that the true power or peak,many are not advertised correctly,and what are you wanting to power.

 

[colinm]

Oh well, need to decide, do I upgrade the batteries or buy a new inverter? Could always sell the inverter I suppose, it's a Ring like VWAlan uses.

Thanks guys.

What do you intend to run off the invertor? If it's low powered then you should be o.k.

 

[izwozral]

A 600 watt toaster.

 

[izwozral]

Is that the true power or peak,many are not advertised correctly,and what are you wanting to power.

It's this one Trev. https://www.amazon.co.uk/Ring-Automotive-RINV2100-12v-PowerSourcePro/dp/B004OKLBWS

 

[SquirrellCook]

Remembering the 50% depth of discharge rule, you only 90ah to play with if your batteries were new. If your inverter was 100% efficient and it's not, that toaster would be pulling in excess of 50 Amp hrs

 

[colinm]

A 600 watt toaster.

Reading Allans web page will give you some ideas of what's best practice. http://www.WEBSITE BLOCKED BY ADMIN/inverters.php
You should note that generally with invertors they will draw the current required by you appliance, plus a little bit for inefficacy.
Unless you set up your system for high outputs then gas or EHU is better for heating/cooking

 

[vwalan]

why do you want an inverter ?

i use an inverter to power my fridge freezer .or the twintub washing machine.
i use caravan gas lights . do have 12v lights but prefer gas.
mind inverter is great for food mixer or making orange juice when in spain etc
when at home run a lead into the house and power the house fridge and a big freezer , vacum and during the day alsorts of 240v things .
mind do have 6x80wt panels and about 500amps of batteries.
in the summer i reckon it saves 25p a day in leccy .
if the sun is not so good i disconnect the house during the night.
cant help being a tight git. hee hee

 

[r4dent]

Remembering the 50% depth of discharge rule, you only 90ah to play with if your batteries were new. If your inverter was 100% efficient and it's not, that toaster would be pulling in excess of 50 Amp hrs

Sorry to pedantic but that should be 50 amp not 50 amp hrs.

As per the chart make sure the wire between the batteries and the inverter is at least 16 mm^2.
In practical terms 2 * 90 ah batteries would provide about 90 mins toasting and then be well flat.

 

[trevskoda]

Bit big to run a toaster ,i would have used the gas grill,to each there own.

 

[molly 2]

Don't these posh new vans come with a grill.check the garage
.get a generator . then you can use the microwave as well .

 

[SquirrellCook]

Sorry to pedantic but that should be 50 amp not 50 amp hrs.

I was talking about capacity rather than a moment in time, but if I'm wrong thank you for the correction.

 

[izwozral]

Bit big to run a toaster ,i would have used the gas grill,to each there own.

Most grills in MH's and caravans are usually inefficient, first they make the bread into a stone like slab then brown it, they take far too long. The electric toaster is super efficient and makes perfect toast and I am a right fussy bugger with my toast!

 

[izwozral]

Remembering the 50% depth of discharge rule, you only 90ah to play with if your batteries were new. If your inverter was 100% efficient and it's not, that toaster would be pulling in excess of 50 Amp hrs
[/QUOT

Reading Allans web page will give you some ideas of what's best practice. http://www.WEBSITE BLOCKED BY ADMIN/inverters.php
You should note that generally with invertors they will draw the current required by you appliance, plus a little bit for inefficacy.
Unless you set up your system for high outputs then gas or EHU is better for heating/cooking

See next post!

 

[izwozral]

Reading Allans web page will give you some ideas of what's best practice. http://www.WEBSITE BLOCKED BY ADMIN/inverters.php
You should note that generally with invertors they will draw the current required by you appliance, plus a little bit for inefficacy.
Unless you set up your system for high outputs then gas or EHU is better for heating/cooking

I didn't understand half of what Allan was saying in the link you provide but what I got the gist of, is that using an inverter isn't such a good idea unless you have a large battery bank which will then require a large solar set up and no doubt a better solar controller than the one in my MH.

Hmmm, methinks I have further thinking to do.

 

[harrow]

I didn't understand half of what Allan was saying in the link you provide but what I got the gist of, is that using an inverter isn't such a good idea unless you have a large battery bank which will then require a large solar set up and no doubt a better solar controller than the one in my MH.

Hmmm, methinks I have further thinking to do.

Just use gas to toast unless your on electric hook up.
I prefer electric toast but do whatever works best.