We're building a new house and I'm not confident with the skills of the electrician who installed the receptacles. In our country, residential structures are supplied with 240 V, 60 Hz (single phase).
Here's what I currently know: 1. Hot and neutral conductors may have been switched (he used the same color of wires for both so there's really no way of knowing which is which when installing a receptacle) 2. Grounding conductor is connected to a ground rod. 2. Grounding conductor is not yet bonded with the neutral conductor 3. At the receptacle, voltage across the hot and neutral conductors are 240V, as expected. 4. However, voltage across either hot and neutral and ground hovers around half of the line-to-neutral voltage, at about 120V.
What could cause this? It's my understanding that since the neutral conductor is already grounded at the transformer on the utility pole, even if the neutral conductor at the load side is not yet bonded with a grounding conductor, measuring the voltage across neutral and a grounding conductor should read a very small voltage (e.g. < 3V).