dual trumpet horns

[Dave70]

Hello,can anyone tell me what amp cable i should use for dual trumpet horns,12 volt 9 amps Cheers Dave

 

[Searush]

Hello,can anyone tell me what amp cable i should use for dual trumpet horns,12 volt 9 amps Cheers Dave

Why do you not think anything over 9A would be OK? Is the compressor a long way from the battery?

 

[neale]

Hello,can anyone tell me what amp cable i should use for dual trumpet horns,12 volt 9 amps Cheers Dave

How far away from the power source are they?

 

[Dave70]

horn wiring

hello, about about 10--12 ft cheers,dave

 

[cliffdale]

Hi

I have just installed twin horns but on a 11m run. I had to use 4.4mm2 cable to cope with the current. I also used a relay to reduce current through the switch.

Dont skimp on cable size when dealing with this current load.

 

[neale]

On that length of run 2 mm2 cable will give you approx 5% voltage drop,which is acceptable.

 

[longjohnsilver]

Surely it depends on how long you intend to blow the horns? One of mine went AWOL recently so now just one horn, cable looks pretty weedy. Can't see a problem when usage is infrequent.

 

[VicS]

Surely it depends on how long you intend to blow the horns? One of mine went AWOL recently so now just one horn, cable looks pretty weedy. Can't see a problem when usage is infrequent.

The cable should be heavy enough to safely carry the current . 1 mm² will safely carry 9 amps but over a distance of more than a metre or so the volts drop will become significant.

2mm² suggested above will result in only 0.46 volt drop over a 10 ft distance or 0.56 volt in 12 ft at 9 amps.

longer runs would require heavier cable but time or frequency of use does not come into the equation.

 

[Dave70]

trumpet horns

On that length of run 2 mm2 cable will give you approx 5% voltage drop,which is acceptable.

Thanks for info. could i ask what 2mm2 cable is in amps. cheers Dave.

 

[prv]

could i ask what 2mm2 cable is in amps.

Three bags of sugar. Or half an hour.

(ie, the question is meaningless because the units don't make sense.)

Pete

 

[neale]

Three bags of sugar. Or half an hour.

(ie, the question is meaningless because the units don't make sense.)

Pete

That's right. You shouldn't have any trouble getting the right stuff if you ask for 2mm2

 

[Elemental]

Three bags of sugar. Or half an hour.

(ie, the question is meaningless because the units don't make sense.)

Pete

Gosh you're being harsh on the OP. Not everyone understands the details of power dissipation along cables....

You'll probably want tinned wire too - it won't corrode.

There's a table here that you can use to look up your cable length and current draw. From there you can determine the cable size (listed as AWG sizes). The drop-down list above the table will convert to cable sizes expressed as square millimetres ( mm2 ). You should be fine with 14AWG (2mm2) wire.

 

[prv]

Gosh you're being harsh on the OP. Not everyone understands the details of power dissipation along cables....

I don't understand the details of power dissipation along cables. But I do know you can't measure diameter (or cross-sectional area) in amps any more than you can measure time in metres or temperature in kilograms.

Pete

 

[VicS]

Thanks for info. could i ask what 2mm2 cable is in amps. cheers Dave.

To give you the straight answer you are looking for

2mm² would be rated at about 20 to 25 amps but as said you should be able to buy it as 2mm² or 14 AWG

http://www.power-store.com/?id=69

http://www.furneauxriddall.com/acatalog/Cables.html

 

[Dave70]

trumpet horns

To give you the straight answer you are looking for

2mm² would be rated at about 20 to 25 amps but as said you should be able to buy it as 2mm² or 14 AWG

http://www.power-store.com/?id=69

http://www.furneauxriddall.com/acatalog/Cables.html

Thanks for the info. cheers Dave