To fuse or not to fuse ? (1 Viewer)

May 1, 2009
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Just had my 1000w inverter wired up by my dealer workshop .I already fitted the inverter in place ,they did the electrics part. It looks a tidy job with the wiring run under the van in a conduit about a 1mtr in legnth .I dont see a in line fuse,should there be one ?
 

Fireman Sam

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It might be in a small fuse carrier where the cable connects to the battery.
 

hilldweller

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Dec 5, 2008
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Im no sparky but that sounds a huge fuse


Theory:

1000 / 12 = 83A

But in practice you need much bigger for surges.

Basically the fuse protects the wiring so if it shorts out it goes not catch fire.

So you need 100A min for the load but with heavy cables they would easily blow 200A if shorted.

150 or 200 gets my vote.

Remember, you plug in 1000W and the poor battery tries to find 100A ( remember losses in the inverter ) with a mighty "WTF is going on, 100A, you can't be serious". It won't say it for long, that you can be sure of.
 

Techno

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My 1800watt is fused at 250 amps as recommended by Sterling
CA_07071314284820-L.jpg

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pappajohn

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curious Andy, what is the .75mm flat twin for.

it appears to disappear directly inside the inverter next to the right hand socket outlet.
 

Techno

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Hi John
That's not a flat twin. The cable I believe you mean is ribbon cable to the remote inverter on off switch
Inverter%20remote-M.jpg
 
Apr 27, 2008
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My 1500w (3000w peak) inverter has a 300A fuse, but as I have two batteries the cable linking the batteries has a 150A fuse, working on the basis that each battery should carry half the load (batteries are identical and bought together). Seems to work.:thumb:

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