Just got RVK 5"extractor fan n carbon filter help with wiring

Hi there just got Rvk 5" extractor fan and carbon filter, im using it with ds90 tent 400w hps. Thing is it had no plug or cable with it for the fan, u have to fit it yourself which is fine i can do that, it says its 0.3 amp, has any1 fitted cable to this before, would b and q sell the wire and plug also would a 3 amp fuse be fine with that as i thought it would be more amps than 0.3 to run fan!!!

Thanks

post a pic of it. i have a 400w in a dr90 tent too. i have a ruck inline fan though.
wiring seems so simple but when i looked at it i was like wtf. haha

Ive only got the pic from the website i got it from, the wiring is fine i can do that its just the amp for plug im wondering about will it exceed more than 3amps as i would use a 3amp fuse, as side of fan says 0.3 amps which would leave 2.7 amp free so that would be fine, but i thought the fan would use more power than that! also fan seems heavy but ill strap it up tight inside tent and place carbon fiter on top of the tent, the tent should take the weight (i hope)
http://www.ebay.co.uk/itm/5-RUCK-EXTRACTOR-FAN-CARBON-FILTER-KIT-GROW-TENTS-/270846024784?pt=UK_HomeGarden_Garden_PlantsSeedsBulbs_JN&hash=item3f0fae5c50

i went to B and Q they had no plug and wire so had to buy a 3m extension lead, im going to cut the extension bit off and wire that end into the fan and the plugs on the other end already ill just take the 10amp out and put a 3amp in it should work thing, just need to watch the overload on the extension lead im currently using, but it should be in limit i think the 400 watt hps is like 5 amp the small fan on floor 3 amp and the extractor is like 3 amp so 11 amp all in out of 13amp