by Beaker » Tue Jul 25, 2017 5:29 pm
find out what your appliances are rated at, and use the formula I = P/V
So for example my water pump is rated at 25 Watts, so I (current) = 25 / 12 = just over 2 Amps continuous rating. You need to allow for voltage drop over the cable length, and current surge when you turn on and off (nuisance blows), so double that 2 Amps to 4 and a bit Amps. 5 Amp fuses are dead common, so it's fine to use one of these.
LED lights, you can use 1Amp fuses, probably 15 Amp for a fridge - but do check the rating on your fridge and do the maths to be on the safe side.
2011 SWB medium roof 2.2l Mk7 115 T300 in Frozen White. Stealth Camper converted.
"It's better to burn out, 'cause rust never sleeps..."