fuse size

[Graeme / New Zealand]

I'm starting to install turn signals in my v8. Using a VSM 900 6v switch (US made same as signal stat 900). Comes with easy instructions but does not tell me what size fuse to run on it. I have a roll of black 10amp black wire, I presume that would be ok to run the lines?

thanks
GB

[JSeery]

Fuses are to protect the wiring and are dependent on wire size and wire length. Wire size is dependent on the current draw of the devices it is connected to. There are charts online to help determine both.

[koates]

Presuming your indicator bulbs are 21 watts x two then they would draw around 7 amps on a 6 volt system. Therefore a 10 amp fuse would be OK. Regards, Kevin.

[Graeme / New Zealand]

Thanks thought about 10 amp

GB

[rotorwrench]

You have two choices when it comes to circuit protective device ratings. The first and most important is for the wire gauge. The second is the known current draw of the load to protect the load.
Examples
AWG 16 and 18 need a minimum of a 10 amp fuse rating
AWG 14 needs a minimum of a 15 amp fuse rating
AWG 12 meeds a minimum of a 20 amp fuse rating
AWG 10 needs a minimum of a 30 amp fuse rating

The fuse is to protect the wire foremost but if your component can use a smaller current rating to protect it then use that rating. The fuse can be a lower amp rating but it can't be a higher amp rating than the minimum for the wire gage. You don't want a fire.

[Graeme / New Zealand]

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Originally Posted by rotorwrench

You have two choices when it comes to circuit protective device ratings. The first and most important is for the wire gauge. The second is the known current draw of the load to protect the load.
Examples
AWG 16 and 18 need a minimum of a 10 amp fuse rating
AWG 14 needs a minimum of a 15 amp fuse rating
AWG 12 meeds a minimum of a 20 amp fuse rating
AWG 10 needs a minimum of a 30 amp fuse rating

The fuse is to protect the wire foremost but if your component can use a smaller current rating to protect it then use that rating. The fuse can be a lower amp rating but it can't be a higher amp rating than the minimum for the wire gage. You don't want a fire.

I'll be using 4mm wire which on the conversion table is a little thicker in guage than 16awg (3mm is a little less). Better to go heavier I suppose.

GB

[Graeme / New Zealand]

Originally Posted by rotorwrench

You have two choices when it comes to circuit protective device ratings. The first and most important is for the wire gauge. The second is the known current draw of the load to protect the load.
Examples
AWG 16 and 18 need a minimum of a 10 amp fuse rating
AWG 14 needs a minimum of a 15 amp fuse rating
AWG 12 meeds a minimum of a 20 amp fuse rating
AWG 10 needs a minimum of a 30 amp fuse rating

The fuse is to protect the wire foremost but if your component can use a smaller current rating to protect it then use that rating. The fuse can be a lower amp rating but it can't be a higher amp rating than the minimum for the wire gage. You don't want a fire.

I'll be using 4mm wire which on the conversion table is a little thicker in guage than 16awg (3mm is a little less). Better to go heavier I suppose.
Thanks for your input.

GB