Pilots flying in an airplane can't see the wires and might crash into them. The red balls act like flags to alert the pilots that the wires are there. Good question!
Use a voltage tester held next to the wire. Turn the switch off. If the tester stops beeping then the wires are on that switch.
A negative live voltage is used to prevent electroytic corrosion on the copper wires.
The connection wiring diagram is usually on the inside of the motor's junction box cover. If the motor has three wires at the junction box then these wires are connected to the three incoming supply wires. If there is more than three wires, check the motor's nameplate to see if the motor is a dual voltage motor.
If you have 200 megohms on an insulation test of a conductor it is more than enough to feel safe about applying a voltage to the conductor with out it shorting to ground.
A link test just confirms that there is voltage on wires 1,2,3, and 6. The active wires in the cable.
test it out and youll see
Check plugs, wires, distributor cap Do a compression test to see if problem is internal
Live Wires - 1946 is rated/received certificates of: USA:Approved
There is no power go to the motor. Test the wires to see if there is power to it.
hook wires from your 12 v battery straight to the fan motor and see if it comes on.
Brown = live (hot) - (equivalent to Red wire) Blue = neutral - (equivalent to the Black wire) Yellow and green = earth. --------------------------------------------------------------------------- However never rely on the wire colors - you should test the wires with a meter to be sure that the person before you has not made a mistake further back in the wiring.
Live Wires - 1921 was released on: USA: 17 July 1921
Live Wires - 1923 was released on: USA: 26 August 1923
Live Wires - 1946 was released on: USA: 12 January 1946
You can test their resistance with an ohmeter to see if within spec. It is so much per foot and if exceeds that, replace.
You can get a blood test to see if you have antibodies to chlamydia, but it won't change how you live your life.