1 phase 2 wire energy meter

Forums › Home Workshop DIY › 1 phase 2 wire energy meter - What is it?

mentalinc

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#315003 6-Jun-2024 19:35

Wanting to know what a '1 phase 2 wire energy meter' is?, and how it's meant to work?

There is one in the switch board for second breaker/fuse board.

The numbers on the meter haven't changed at all, but power is being used off the switch board.

I'm wanting to look at moving to a smart meter to get better pricing, but want to understand what the meter is first and how having it may impact the ability to get a smart meter installed.

thanks

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Spyware

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#3245390 6-Jun-2024 19:39

How about a photo??

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pih

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#3245395 6-Jun-2024 20:10

"1 phase 2 wire energy meter" is most likely referring to the old style energy meter with the spinning disk which tracks your energy use, we still had one at work until it was recently upgraded. In your case it sounds like a secondary circuit was installed with its own meter on the switchboard to measure usage: perhaps for tracking power use of a granny flat or similar. Your main meter upgrade will not be affected by the presence of the secondary meter. It might be useful to know what the circuit is connected to, but you could also simply get it removed if you need the space on the switchboard, for example. It may already be disconnected, which is why you're not seeing any movement.

mentalinc

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#3245403 6-Jun-2024 20:27

Photo sounds like a great idea, sorry forgot to attach to the post.

Any hints on how 'turn' it on?

The power and pulse lights don't flash at all.

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Jase2985

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#3245466 6-Jun-2024 20:44

doesnt look like an official meter as it appears to be DIN mounted and doesnt have the usual stickers etc

SomeoneSomewhere

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#3245471 6-Jun-2024 21:07

1 Phase 2 Wire simply refers to the type of electrical supply it's expected to measure - standard single phase power, not the three-wire centre tap split phase like the US uses, or two or three phase of any of a bucket of different types.

It might be fed from switched off breakers if there are any.

It might also be abandoned in place, with the wiring disconnected, because it was easier than finding blank fillers.

It should have no impact on getting a smart meter installed; your revenue meter is a different meter, and may be nearby or elsewhere.

mentalinc

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#3245474 6-Jun-2024 21:22

Cool thanks for the confirmation.
Yes the meter with ICP numbers etc is nearby, was more what does this meter do.

Thanks all

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neb

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#3245544 7-Jun-2024 08:19

Jase2985:

doesnt look like an official meter as it appears to be DIN mounted and doesnt have the usual stickers etc

It's a Chinese DDS997. The photo doesn't show a manufacturer so it's probably one of the many clones, either parallel-imported or off Aliexpress.

wellygary

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#3245552 7-Jun-2024 08:53

mentalinc: Cool thanks for the confirmation

...Was more what does this meter do.

Thanks all

it's to measure the usage on one of the house sub-circuits,

When we bought our bach we found one of these on the sub board that ran the sleepout,

IT was So they could keep an eye on a tenant's usage without having to have a more expensive ICP metered second separate street connection

mentalinc

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#3245578 7-Jun-2024 10:04

Assume it's the same purpose then, but unsure as to why it's not working.

Maybe the Aliexpress knockoff is the answer and it's just broken

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Jase2985

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#3245581 7-Jun-2024 10:36

I would assume its supply comes from a breaker, is there one thats switched off on the board? either that or its been disconnected or as you said its dead

mentalinc

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#3245593 7-Jun-2024 11:16

Nothing turned off on the board, maybe it's been disconnected (but cant see why you'd pay a sparky to disconnect it)

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raytaylor

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#3246382 9-Jun-2024 00:10

The common term for these in NZ is a "Check Meter".

Its simply a meter that counts electricity consumption on a specific circuit behind the main ICP meter.

As suggested above, usually for a granny flat or separate dwelling which is rented out so electricity consumption can be charged appropriately to the tenant and usage calculated separately from the rest of the consumption shown on the ICP / main meter.

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