What size fuse for charging a h/h vacuum cleaner ?

[clyst]

The set up is this ....... We have a small 7.5v Black and Decker (yes yes I know but it works really well especially picking up dog hairs ) hand held vacuum cleaner fitted fwd on a small bhd next to the bow thruster battery isolating switch .
Because we are now on a swinging mooring with no 240v access I was considering charging the cleaner via a 300w inverter taking supply from the thruster iso switch and incorperating a blade fuse but what rating ?? Thanks .

 

[rosssavage]

Or... :

https://uk.rs-online.com/mobile/p/portable-car-power-adapters/4784667/

 

[VicS]

The set up is this ....... We have a small 7.5v Black and Decker (yes yes I know but it works really well especially picking up dog hairs ) hand held vacuum cleaner fitted fwd on a small bhd next to the bow thruster battery isolating switch .
Because we are now on a swinging mooring with no 240v access I was considering charging the cleaner via a 300w inverter taking supply from the thruster iso switch and incorperating a blade fuse but what rating ?? Thanks .

What exactly are you fusing? The 12 (24?) volt connection at the bow thruster isolating switch or the 240 ( 220?) volt connection from the inverter for the B&D charger

If you are fusing the 240/220 volt connection then I'm not sure blade fuses are suitable

 

[clyst]

What exactly are you fusing? The 12 (24?) volt connection at the bow thruster isolating switch or the 240 ( 220?) volt connection from the inverter for the B&D charger

If you are fusing the 240/220 volt connection then I'm not sure blade fuses are suitable

Hi Vic , thanks for your reply .........The 12v to the inverter .

 

[clyst]

Or... :

https://uk.rs-online.com/mobile/p/portable-car-power-adapters/4784667/

Ah now that's a possibility . Thanks .

 

[sarabande]

If you are fusing the 240/220 volt connection then I'm not sure blade fuses are suitable

In terms of amperage or speed/slowness of blowing ?

 

[rosssavage]

Just check the current draw by the vacuum.

Other higher current converters are available

 

[macd]

Hi Vic , thanks for your reply .........The 12v to the inverter .

Then if you plan to use the inverter for anything else (or if someone on board might conceivably be tempted to use it for anything else), then fuse the inverter for its rating. There's probably a fuse spec in the bumf that came with it. It seems a bit daft to install an inverter for the benefit of just one appliance - and even if that's the intention, I'd put money on it not standing the test of time.

If the charger manufacturer thought it desirably to fuse its 240V supply, he would have put one in the (bonded?) plug. If they didn't, you always have the option to chop it off and fit a fused plug.

 

[VicS]

In terms of amperage or speed/slowness of blowing ?

Voltage rating
Blade fuses seem to be for automotive use and are only rated for a max of 32 volt DC

but the OP is talking about the 12 volt supply so irrelevant

 

[VicS]

Hi Vic , thanks for your reply .........The 12v to the inverter .

Then if you plan to use the inverter for anything else (or if someone on board might conceivably be tempted to use it for anything else), then fuse the inverter for its rating. There's probably a fuse spec in the bumf that came with it. It seems a bit daft to install an inverter for the benefit of just one appliance - and even if that's the intention, I'd put money on it not standing the test of time.

If the charger manufacturer thought it desirably to fuse its 240V supply, he would have put one in the (bonded?) plug. If they didn't, you always have the option to chop it off and fit a fused plug.

I agree with macd.

Fuse for its max rating so probbaly 30 amp required but ensure the wiring is rated for at least 30 amps

 

[clyst]

Thanks for you replies chap some things to think about .