Other Questions and Information
Electrical Calculations
All about calculations
How is power factor calculated?
We calculate power factor off of real power (P) and apparent power (S). Where pf = P/S. Real power is calculated from the product of the Instantaneous Voltage and Current. Apparent power is calculated from the product of the RMS values for Voltage and Current.AC (RMS) / DC (Mean) / Frequency values
The Channel Checker shows 4 values for each channel input:
AC+DC (RMS)
Geometric sum of the AC and DC values. May not match the numerical sum of the AC and DC values.
AC (RMS)
AC-only RMS value of the signal input.
DC (Mean)
DC-only value of the signal input.
Frequency
The frequency count of the signal. Firmware v4.0.5 and above calculates this based on the zero-crossing of the signal, firmware prior to v4.0.5 calculates frequency based around the mean-value of the signal.
Ratings, certifications, etc
AIC or short-circuit rating
AIC (ampere interrupting capacity) is the maximum short-circuit current that a circuit breaker can safely interrupt. The eGauge is not a circuit so it does not have an AIC rating.
Socket-meters (or any type of in-line meter) will have a maximum current that they can safely carry and such meters usually have a short-circuit current rating. For safe operation, the short-circuit current rating has to be higher than the maximum short-circuit current that could occur at a given installation location.
eGauge EG3xxx and EG4xxx meters are not inline-meters and as such do not have a short-circuit current rating. Instead, the CT sensors of the eGauge meters clamp around existing wires, so as long as those wire have suitable current rating, the installation will be safe.
Certification Documents
The EG4xxx declares the following certifications. Conformity documents are provided, individual's names and signatures have been redacted for privacy.
IEC/UL 61010-1 Ed. 3.0 B:2010
The UL file number for eGauge is E495717. This certification can be found via the live UL website. At the time of writing this is located at iq.ulprospector.com. A free account is required to perform searches. Search for the UL file number or "eGauge" for the UL certification confirmation.
IEC 61000-6-1 Ed. 3.0 B:2016, IEC 61000-6-3 Ed. 2.1 B:2011
The IEC and CE conformity statement may be downloaded here or from the sidebar on the left (CE-DoC.pdf).
FCC Title 47 CFR Part 15-Subpart B Class B, ICES-003 Information Technology Equipment Class B
The FCC and ICES verification document may be downloaded here or from the sidebar on the left (fcc.pdf).
ANSI C12.1, ANSI C12.20 (0.5%)
The ANSI Accuracy results document may be downloaded here or from the sidebar on the left (EG4xxx-ANSI-cert.pdf)LEED Credits for Submetering
See attached document for information LEED v4 credits that are applicable to the eGauge and metering.Firmware Upgrade Bugs before v4.0.4 (EG4xxx)
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