Backup generators for sub metering is a PITA. I got permission from the
utility to connect the generator ahead of a bank of individual meters on a MTU
once. But that meant that my generator was turning the utilities meters during
an outage, including the meters on the units we were in. So we were paying for
the generator we were making. It was the only practical solution.
From: Chris Fabien
Sent: Saturday, October 1, 2022 1:45 PM
To: AnimalFarm Microwave Users Group
Subject: Re: [AFMUG] Datacenter power submetering
It's flat rate power billing. But thats a good thought to keep in mind. We
currently have individual meters installed for the two colo racks but are
installing redundant generators and transfer switches, so makes the # of meters
double so I'll have like 12 seperate feeds at the start to meter and that could
increase as datacenter grows. I think it will be cleaner to have two large
panels and meter individual circuits vs a cascade of panels to put a physical
meter at each appropriate point.
On Sat, Oct 1, 2022, 3:20 PM Zach Underwood <zunder1...@gmail.com> wrote:
Do you have a fixed cost per kwh or is time of use or different cost per kwh
based on what bucket your overall usage.
You have any other than fixed cost per kwh then just wire everything in the
same leased spaces to its own meter. If that retail space ends up being food
service do you really want to foot the bill for their power usage when they hit
peak traffic during peak power rates like at lunch time.
On Sat, Oct 1, 2022 at 2:10 PM Chuck McCown via AF <af@af.afmug.com> wrote:
Found by googling:
https://accucdn.accuenergy.com/wp-content/uploads/AcuRev-2100-Multi-Circuit-Submeter-Datasheet.pdf
From: Chris Fabien
Sent: Saturday, October 1, 2022 11:41 AM
To: AnimalFarm Microwave Users Group
Subject: [AFMUG] Datacenter power submetering
We are remodeling our old office building into a datacenter with 2 or 3
tenants and a 2500 sqft general retail space. I want to be able to sub-meter
the power on a per-circuit basis, and ideally be able to assign a group of
circuits to each tenant they serve. I have seen some inexpensive solution using
small current transformers in the panel but they are targeted at residential.
The circuits needing to be metered will be from 20 to 200A feeds. Any solutions
out there like this?
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My website
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