you know how to find out the amperage draw of a component?
- 1. First measure
the resistance with an ohm-meter.
2. Then go measure your battery voltage (preferably with motor running if
using an alternator).
- 3. Divide the battery
voltage by the resistance and there's your amperage draw! It's that simple!
A typical transbrake solenoid draws 1.4 ohms resistance. 12 volts divided
by 1.4 ohms = 8.57 amps! Now check this out... 16 volts divided by the same
1.4 ohms = 11.4 amps! You
should up your wire sizes and fuse sizes when using 16 volt batteries!!!
formula is one of three "Ohm's Law": V/R=I
(the other's are V/I=R & IxR=V) and this simple check will help you
decide what size fuse and what gauge wire should be used when wiring your
This test does not work on electric motors such as fuel pumps, fans, and
Did you know an 18 gauge
coil cord will drop 1.2 volts to an 8 amp transbake solenoid? Our 14
gauge coil cord only drops 0.4 volts to the same solenoid. Can you
afford losing a race because your transbrake wouldn't set?