Bunnings dropped their price on the Projecta 400 amp jumper leads from $29.38 to $18.89.
200 amp leads have also dropped in price from $23.56 to $16.89. But why would you bother?
400amp tech specs:
- Surge protected
- 2.5m long
- 15 mm^2 copper clad aluminium
- Insulated clamps
- Suitable for 6 and 8 cylinder vehicles
- 12 and 24 volt compatible
- Carry case included
How long would you like?
A gentleman would have been too polite to ask.
Made my day, thank you! XD
only wish longer when it is in need.
In SA, Paramount-Brown carry:
How much do they cost?
When I went back, they were sold out.
On the earloer viskt, there was just 1.
If we pas again, we may look for or ask price.
Always handy
Especially when there's a damsel in distress
A little fire extinguisher is also good incase you set her car onfire
These have instructions on the back and the surge protector lights up red when it's connected in the right direction. Almost fool proof.
never understood why these have a surge protector.. they pull 300amps+ in a surge to start the other car lmao
Surge generally refers to short duration high voltage spikes above a certain voltage that can kill electronics. In this case it likely clamps the voltage above something like 15 volts (at a guess).
The voltage will be constant from the battery. The surge protection will be a surge in current.
Its basically short circuit protection.
@Grunef: We will have to agree to disagree Grunef. The whole point of jump starting a car is that you want to draw a "surge of current" to start the car with the flat battery. How exactly do you stop current flowing above a certain level (and who decides that level) in a heavy gauge wire that does not have a fuse or breaker inline. A jump starter cable has direct heavy gauge copper connection between the black clamps and between the red clamps. If you cracked open a surge suppressor box you would find devices such as MOV's or TVS (transient-VOLTAGE-suppression) diodes both of which clamp voltage above a certain level. And regrding your claim of "Its basically short circuit protection" I dare you to connect your battery to one side of the jumper cables and touch the other ends red and black cables together. You will get sparks and red hot cables that continue to get hotter until the insulation melts. They do not have short circuit protection.
This is really worth jumping on, thanks OP!
Yep deals like this really get my motor running
As long as it doesn't grind your gears, you're good
I like where this thread leads
I was reading the other day that with all the computer controlled systems in newer cars they should not be jump started as there is a risk to the electronics. This was from the NRMA
I'd laugh if NRMA come and jump start the car anyway themselves, lol
What so they can sell you a new battery?
Having to be jump started is never ideal but the risks vary from car to car. There are heaps of ways to minimise the risk of voltage spike.
For example with the ignition off you can charge up the dead battery, when the battery has gained enough charge remove the clamps and start the car under its own battery. This method takes heaps of time since charging a dead battery takes time.
Another tip to minimise surge is to lower the amount of drawn current. Turn off ancillaries eg. car stereo, lights, cigarette USB chargers, etc
Then there's the NRMA way which is to invest in as expensive equipment as you can afford for surge protection, cables, battery charging.
How is this one compared to the SCA one, which is about the same price and 400 amp 3m long.
http://www.supercheapauto.com.au/online-store/products/SCA-1…
They look similar but not rated for 24V, doesn't specify the gauge of wire and also state they're only 2.7m long.
I'd buy a brand name over SCA.
2.7m cable, plus clamps
Most likely the only reason for Bunnings to drop their price.
I'd like to know how they calculate the current ratings of jumpers.
For example, 5AWG copper wire is 16.8 mm^2, and is only rated to do about 62A, and at that current it will have a surface temperature of 60 centigrade - hot enough to give you a first-degree burn. 5AWG has a fusing current of 795A@10 seconds, i.e. it will melt in about 10 seconds at that current.
These jumpers have a smaller cross-sectional area, higher resistance (aluminium versus copper), and yet they claim it can do a higher current? Maybe for a second or two.
Here's where I copied my stats from: https://en.wikipedia.org/wiki/American_wire_gauge#Tables_of_…
Thanks OP, picked up one of these yesterday at Underwood QLD.
There's about 3 left. Nice, thick cables!
2.5m is really not quite long enough.