last bit of advice on wiring

[pottinger]

hey all,

got some led strip lights (single colour) 5 metres 24w 3a

now, the connection off the led strip is a pos and neg wire.
the wire itself is VERY thin.

i was going to run a wire from a fusebox (fused at 3a) onto a switch then onto the LED strip.

If i run a normal size wire (ie a 5amp wire) from the fusebox to switch then 5 amp wire from the switch to the ledstrip, surely the wiring that is on the LED strip is a weak spot ???

ie, the 3amp fuse prortects the 5amp wire, but what protects the wire you attach to on the LED strip ? :msn4: :?

doin my head in this is :lol:

a thought id finished but obviously not potts.... :roll:

 

[creationblue]

hey all,

got some led strip lights (single colour) 5 metres 24w 3a

now, the connection off the led strip is a pos and neg wire.
the wire itself is VERY thin.

i was going to run a wire from a fusebox (fused at 3a) onto a switch then onto the LED strip.

If i run a normal size wire (ie a 5amp wire) from the fusebox to switch then 5 amp wire from the switch to the ledstrip, surely the wiring that is on the LED strip is a weak spot ???

ie, the 3amp fuse prortects the 5amp wire, but what protects the wire you attach to on the LED strip ? :msn4: :?

doin my head in this is :lol:

a thought id finished but obviously not potts.... :roll:

The fuse should protect the smallest cable, so ideally you want to find out the cross section of the wire (mm2) and find its current rating

 

[pottinger]

last question promise :msn4:

does it matter what size wire is used to get to the thinest wire, ie

fusebox
1 amp fuse then 15 amp wire connected to this and run to the 2 amp wire and connected
therefore safe :? or should the wire be matched as near as poss ? brain says it makes no difference :?:

a safety conscious potts

 

[creationblue]

last question promise :msn4:

does it matter what size wire is used to get to the thinest wire, ie

fusebox
1 amp fuse then 15 amp wire connected to this and run to the 2 amp wire and connected
therefore safe :? or should the wire be matched as near as poss ? brain says it makes no difference :?:

a safety conscious potts

As long as the cable will carry the current then it makes no odds esp when talking about tiny cables like these mate

 

[ZedBed]

If the whole lots rated at 3A the last bit of wire must be good for that x a safety factor. I'd plump for 5A. I am not an electrician.

3A is quite draw? I thought LED's were supposed to be good for power comsumption?