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Great68 · 03-06-2019, 02:44 PM

Yeah what you're looking for are sub-meters.

There are many different types available. The digital style with current transformers that you install on the power feed lines like LuHua linked are going to be easiest to retrofit in.

Here's another one:
https://www.powermeterstore.ca/P1069...r-power-meters
I've ordered from these guys, they're good and based in Alberta.

For most accurate results, install one on each breaker panel.

If you want to cheap out you can install just one, and minus that reading from the BC Hydro meter reading to get the other tenant's panel. The only catch is that it compounds any accuracy errors.

Place I used to rent was a triplex with 3 suites and had the following setup:

BC Hydro Meter went into main breaker panel. Main breaker panel provided feeds to to main floor circuits and 3 submeters with sub breaker panels:
Sub#1: Upstairs Suite
Sub#2: Downstairs Suite
Sub#3: Laundry & Common

Hydro was calculated:
BC Hydro Bill kWh - Upstairs kWh - Downstairs kWh - Laundry kWh = Main suite kWh

Although I found out later when I was troubleshooting a tripped breaker for my suite that some of the common stuff like exterior lighting (on all night) was fed from the main panel which I was paying for.

03-06-2019, 02:44 PM	#4
Great68 Willing to sell body for a few minutes on RS Join Date: Mar 2002 Location: Victoria Posts: 10,936 Thanked 5,583 Times in 2,055 Posts Failed 188 Times in 103 Posts	Yeah what you're looking for are sub-meters. There are many different types available. The digital style with current transformers that you install on the power feed lines like LuHua linked are going to be easiest to retrofit in. Here's another one: https://www.powermeterstore.ca/P1069...r-power-meters I've ordered from these guys, they're good and based in Alberta. For most accurate results, install one on each breaker panel. If you want to cheap out you can install just one, and minus that reading from the BC Hydro meter reading to get the other tenant's panel. The only catch is that it compounds any accuracy errors. Place I used to rent was a triplex with 3 suites and had the following setup: BC Hydro Meter went into main breaker panel. Main breaker panel provided feeds to to main floor circuits and 3 submeters with sub breaker panels: Sub#1: Upstairs Suite Sub#2: Downstairs Suite Sub#3: Laundry & Common Hydro was calculated: BC Hydro Bill kWh - Upstairs kWh - Downstairs kWh - Laundry kWh = Main suite kWh Although I found out later when I was troubleshooting a tripped breaker for my suite that some of the common stuff like exterior lighting (on all night) was fed from the main panel which I was paying for. __________________ 1968 Mustang Coupe 2008.5 Mazdaspeed 3 1997 GMC Sonoma ZR2 2014 F150 5.0L XTR 4x4 A vehicle for all occasions Last edited by Great68; 03-06-2019 at 02:51 PM.