Three phase meter socket/single phase service

Meternerd to the rescue....

Meternerd to the rescue....

GoldDigger said:

The difference is in the voltage on the unused leg. And the meter cannot depend on a neutral connection if it is designed to work with either wye or delta service.
However I have not really worked with one. "This looks like a job for *meternerd*!"

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Well, in my humble but absolutely always correct opinion.....if it's solid state (which most likely it will be), the meter will meter accurately whether there is a missing phase or not...but....there will be a "loss of phase" alarm which will likely drive the techs and the billing department nuts. Also, I programmed the meters to stop transmitting (for remote read meters) on a loss of phase, so the meter tech (me) had to go out and verify all three phases and clear the alarm to restart the transmission. It's mostly because of CT meters, since the service would still supply normal power even if one of the phases of the meter wiring failed due to a bad connection, blown PT fuse, etc., but the POCO would meter only 2/3 of total usage. If it was me, I'd definitely put the Kabosh on a 3 phase socket with single phase connections. Plus, I loved to "p**s off" the contractors. :lol: By the way, 3P 4W meters always depend on the neutral for metering. All three phase four wire meters have three phase jaws and one neutral jaw for the voltages. Delta meters can't be used on a Wye service.

Meternerd to the rescue....Well, in my humble but absolutely always correct opinion.....if it's solid state (which most likely it will be), the meter will meter accurately whether there is a missing phase or not...but....there will be a "loss of phase" alarm which will likely drive the techs and the billing department nuts. Also, I programmed the meters to stop transmitting (for remote read meters) on a loss of phase, so the meter tech (me) had to go out and verify all three phases and clear the alarm to restart the transmission. It's mostly because of CT meters, since the service would still supply normal power even if one of the phases of the meter wiring failed due to a bad connection, blown PT fuse, etc., but the POCO would meter only 2/3 of total usage. If it was me, I'd definitely put the Kabosh on a 3 phase socket with single phase connections. Plus, I loved to "p**s off" the contractors. :lol: By the way, 3P 4W meters always depend on the neutral for metering. All three phase four wire meters have three phase jaws and one neutral jaw for the voltages. Delta meters can't be used on a Wye service.

We have extremely high electricity meter readings for our home which doesn’t make sense to us  and we have constantly questioned this with our supplier since moving in.

We inherited a 3 phase electricity supply to one meter which gives one meter reading. We have been advised by an electrician that a meter reading is obtained by taking the reading from one phase and tripling it. Obviously each phase of electricity supply covers different parts of the property and will use widely varying amounts of electricity, so this is concerning.

We had the supplier out to install a smart meter fitted but they cannot fit a smart meter to a 3 phase system. We were told by the electrician that came out, that the reading will be of actual usage across the three supplies but he was not familiar with this sort of supply and so we were not confident about what we were told.

Goto acrel to know more.

We have not been able to get a breakdown of the usage to each phase.

Can anyone advise us on a 3 phase supply and how readings should be taken?

Should we have a meter for each phase of supply?

How can we check if someone else is feeding off our system?

all thoughts gratefully received.

If you want to learn more, please visit our website 3 phase power monitor.