4.6kw Water heater on a 10amp fuse??!!

Multiplex · 28 Apr 2006

How come I am able to run a 4.6kw instant water heater on a 10amp fuse in the fusebox?? I can't understand how this works, even when the heater is running for five minutes and has been used on and off for the past 10 days!?

Simon.

RF Lighting · 28 Apr 2006

What sort of fuses do you have in your fusebox?

Multiplex · 28 Apr 2006

Stupid German fusebox which only takes 10amp fuses.

Simon.

securespark · 28 Apr 2006

RF Lighting · 29 Apr 2006

Can you post us a picture? How old is it? Does it have a brand name on it? Are you sure it only takes 10A fuses or is it just that this is what is currently fitted? I have never seen a fusebox which only takes one size fuse.

Rob

JohnD · 29 Apr 2006

I wonder if it is just the fuseholder?

When I was in the telecomms trade we used a lot of 10Amp racks, like LAN cabinets, with lots of pieces of equipment in, oddly, they have one 10-Amp MCB feeding a row of 10Amp cartridge fuseholders on the same rail... seems a bit odd but I suppose they rely on disconnection time to discrimiate.

Spark123 · 29 Apr 2006

I take it by the other thread this German fusebox is in Germany?

Multiplex · 29 Apr 2006

Yes it's in Germany, sorry I meant to say that as well.

I'm more curious as to what the pitfalls are from continuing to run this water heater through this fuse. Should I just leave it?

Simon

RF Lighting · 29 Apr 2006

See this thread //www.diynot.com/forums/viewtopic.php?t=51074

Substitute these words:

'9.5kW shower' for '4.6kW heater'
'30A fuse' for '10A fuse'

Rob

Multiplex · 30 Apr 2006

That's a great reference, thanks for that. I guess I had better see how I can change it to a 20amp fuse.

Simon.

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4.6kw Water heater on a 10amp fuse??!!

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