Relays with inbuilt fuse question

[WiLo]

first of all not sure what section this should be in so if it's wrong i apologise.

installed these today for the headlights and just want to check if i am right in assuming the fuse on the relay is as a replacement for putting a fuse on the feed from the battery. thought id better check before the car catches fire and here would be the best place to ask.

[thechuckster]

Neat idea - tho it would pay to check what your existing relay & fuse are rated at as some headlight circuits will pull >15Amps (depending on configuration).

[WiLo]

there is no existing relay.
is there any way i can work out if ill pull >15amps?

[Big rob]

amps = power/volts, that is what the current needs to be at the globe but there is also a voltage drop accross the wire so it may be another amp.

[WiLo]

only running 55/60W globes so only around 10A so the 15A fuse should be alright shouldnt it?

[thechuckster]

fwiw: 55W @ 12V = 4.58amps - so no more than 3 bulbs on the same circuit/fuse

[WiLo]

only got the 2 globes per circuit.
will be running 3 different circuits for low beam, high beam and the driving lights

[WDE_BDY]

I just left the 30W fuses in the Narva ones I had for my spotlights, was running 100W bulbs though. Ands yes fuse covers feed from battery.

Callum