Neutral Earth bonding of inverter

**Derlyn** · 20-May-23, 10:28 AM

Originally Posted by Dave A

Not just a floating neutral?
Or did you check the specs on the unit?

The specs on these types of inverters only give the live/neutral voltage output.

I was probably a bit hasty with my VOV reply. Its just seldom that one measures a floating neutral scenario so close to exactly half the supply voltage. ( possible, but seldom )
Of course the correct way, as with a generator as well, is to connect a load to the output before taking voltage measurements. I use incandescent light bulbs.
I was under the impression that the author had done this.

Had he not, it will be interesting to know the outcome after doing so.

**JackC** · 23-May-23, 03:15 PM

"Of course the correct way, as with a generator as well, is to connect a load to the output before taking voltage measurements. I use incandescent light bulbs"

I done it with a small hair dryer as load, the voltages remain the same as tested previously. I also tested the current with a clamp meter both on live and neutral (basically the same 2.3 Amp) and when I include both neutral and live in the clamp meter I get a reading of 0.07 Amp. As explained by various forum members it seems like an inverter developed specifically for mobile use.

**Derlyn** · 23-May-23, 06:39 PM

Originally Posted by JackC

"Of course the correct way, as with a generator as well, is to connect a load to the output before taking voltage measurements. I use incandescent light bulbs"

I done it with a small hair dryer as load, the voltages remain the same as tested previously. I also tested the current with a clamp meter both on live and neutral (basically the same 2.3 Amp) and when I include both neutral and live in the clamp meter I get a reading of 0.07 Amp. As explained by various forum members it seems like an inverter developed specifically for mobile use.

Thanks for that feedback brother. Interesting. So it seems as if that inverter has a VOV output.
Like you say ..... specially made for mobile use.

Cheers.

**Justloadit** · 24-May-23, 07:48 AM

Originally Posted by JackC

I also tested the current with a clamp meter both on live and neutral (basically the same 2.3 Amp) and when I include both neutral and live in the clamp meter I get a reading of 0.07 Amp.

Could the 0.07Amp be an electronic amplifier offset value that is inherent in the clamp meter?
This can be verified, by reading the display, with the jaws shut before doing the measurement. Some of the Clamp Amp meters do have a 'Zero' button.
Anyway a Clamp Amp meter with a 40/20Amp range will not read AC milliAmps correctly, as it will be out or range for the specific amp meter range.
To do these kind of low AC milliamps measurements, one will have to get a high quality, expensive AC Clamp Meter.

**JackC** · 24-May-23, 04:15 PM

"To do these kind of low AC milliamps measurements, one will have to get a high quality, expensive meter"

Repeated the test with a RS-Pro Leakage Current Clamp meter. Readings are Live- 2.180 Amp, Neutral- 2.179 Amp and with both live& Neutral together 0.001 Amp (1 Milli Amp).