On Saturday, September 14, 2019 at 12:17:37 PM UTC-4, G.B. Cricket wrote:
Hi All,

I've got a open neutral line in a circuit.

The VOM can read the voltage across the bare copper ground and the hot
lead but it does not register any voltage between the insulated neutral
and the hot lead.

What's the best way to troubleshoot this?

A loose connection is a common problem. You could have one in the circuit breaker panel or in any outlet, switch, or light on that circuit. Too often it is the outlet that has had the wires pushed into the spring loaded connections in the back rather than the screw terminals on the side that is the culprit. I usually ask my customers where they plug the vacuum cleaner in. From experience I have learned that the outlet that gets used frequently with a large load is likely the problem outlet. It is also possible that the problem is in more than one outlet. I would start at the breaker panel and tighten every connection on the neutral bar, the ground bar, and each circuit breaker. After that I would open up every outlet on that circuit, even the ones that still work. Many times I have removed an outlet and a wire will just come out of the back spring connection.

Since this is a mobile home it is possible that it was wired without standard electrical boxes and splices. Many mobile homes are wired with self-contained wiring devices and can be a PITA to troubleshoot.

John Grabowski
https://MrElectrician.TV