Slime tyre pump cuts out

[tanneman]

It's got nowt to do with the fuse. It's a question of whether the cable will handle 7A.

The Amp rating depends on a number of things. The internal resistance of the cable which in this case should be about 0.2 to 0.3 Ohm. The insulation of the cable or lack of. An insulated cable should not exceed a temperature of about 90'C before the insulation starts to break down. Is the cable in a well ventilated area? Ventilation should keep the temperature down. The colder the environment the more current can be handled for a given conductor size. The length of the cable plays a role as you will have to factor in voltage drop but in this case it's negligible. A 20 Guage insulated conductor should be able to handle 7.5 Amp from a 12V source. That is a diameter of less than 1mm.

 

[littleredrooster]

The Amp rating depends on a number of things. The internal resistance of the cable which in this case should be about 0.2 to 0.3 Ohm. The insulation of the cable or lack of. An insulated cable should not exceed a temperature of about 90'C before the insulation starts to break down. Is the cable in a well ventilated area? Ventilation should keep the temperature down. The colder the environment the more current can be handled for a given conductor size. The length of the cable plays a role as you will have to factor in voltage drop but in this case it's negligible. A 20 Guage insulated conductor should be able to handle 7.5 Amp from a 12V source. That is a diameter of less than 1mm.

Yes - very good cut-and-paste which tells us nothing about an Optimate flying lead, nor answers the query which I raised.

So - for the hard of understanding: Will the standard lead which comes with an Optimate take the ~7A that a tyre-pump is likely to need? I would give you the answer myself, but do not have access to said lead to assess or measure it.

 

[slimpickings]

Yes - very good cut-and-paste which tells us nothing about an Optimate flying lead, nor answers the query which I raised.

So - for the hard of understanding: Will the standard lead which comes with an Optimate take the ~7A that a tyre-pump is likely to need? I would give you the answer myself, but do not have access to said lead to assess or measure it.

Did we ever get a definitive answer

Yes I know its an old thread ...
I'm a slow reader

 

[RobertG]

Optimate (and its cable) is rated for 5 Amps. For short term use (pumping tyres) it will handle 7 Amps no problem.*

 

[morty]

remember nowadays you can have thin wall wire that takes huge amounts of load compared to standard cable.

 

[(RIP) petcul]

Your pump should have come with crocodile clips. Forget any auxiliary sockets, clip it straight on to the bikes battery. .

+1 ...