None.
In standard single phase wiring there are 3 wires: hot (black), neutral (white), and ground (green). Each has a different purpose and none can be used for any other purpose.
Ground wire to neutral wire.
The ribbed wire on a lamp cord is the neutral wire. On an extension cord there is no rib but the neutral wire is white in colour.
The colour of the neutral wire in Australia is blue with marking N.
You should never switch the neutral wire. The neutral of the appliance should be connected directly to the neutral wire leading to the service panel neutral bar.
The neutral wire is the return wire back to the distribution panel from the load. Without this return wire no load will work.
a loose connection of a neutral wire
A Wire can be part of a battery substitute device such as that found at batsub.com.
Typical home wiring will have one hot wire, one neutral wire, and one ground wire per circuit. An open neutral would indicate that the neutral wire, usually white wire, is broken.
If wired properly the ridged wire is the neutral.
The neutral wire and power wire are never connected together.
Ground wire to neutral wire.
yes
No
The ribbed wire on a lamp cord is the neutral wire. On an extension cord there is no rib but the neutral wire is white in colour.
The colour of the neutral wire in Australia is blue with marking N.
You should never switch the neutral wire. The neutral of the appliance should be connected directly to the neutral wire leading to the service panel neutral bar.
The neutral wire is the return wire back to the distribution panel from the load. Without this return wire no load will work.