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CLASS 500 ADVANCED KWH/DEMAND METER
FREQUENTLY ASKED QUESTIONS
Q. When providing line voltage to the Class 500 Meter, can l tap off of the same breaker l am monitoring?
A. Yes, the voltage can be pulled from the same breaker being monitored.
Q. Can the Class 500 Meter line voltage wires be run in the same conduit as the sensor leads?
A. Yes, there will be no effect on the Class 500 Meter if the sensor leads and line voltage wires are run in the same conduit.
Q. How do l find the cost for kWh and kW to bill my tenants?
A. Your local utility bill should list the cost per kWh and kW. If not, simply call your utility and ask them to provide you with the
cost per kWh and kW.
Q. What size wire do l use for the line voltage leads?
A. These wires are normally sized at #14 AWG, but be sure to confirm this requirement with your local and national electrical
codes requirements.
Q. What size wire should l use to extend the current sensor leads?
A. These wires are normally #14 AWG, twisted pair arrangement. Consult your local electrical code for proper sizing
requirements.
Q. The load l need to monitor has parallel feeds. How do l install the current sensors for this application?
A. There are two ways you can monitor parallel feeds. One method is to clamp the sensors around all feed wires for each
phase. The second way to monitor parallel feeds is to clamp the sensor around one of the feed wires for each phase. When
you read the Class 500, the final reading must be multiplied by the number of feed wires for each phase.
Q. I have two subpanels l would like to monitor with one Class 500 Meter. These subpanels are fed by different
transformers in the building. Can l parallel the sensors and monitor both panels with one Class 500 Meter?
A. No. These panels cannot be monitored by one Class 500 because they are different power sources. When you parallel
current sensors, all loads being monitored must be from the same voltage source.
Automation and Control Solutions
Honeywell International Inc.
1985 Douglas Drive North
Golden Valley, MN 55422
customer.honeywell.com
® U.S. Registered Trademark
© 2011 Honeywell International Inc.
62-0304—05
M.S. Rev. 06-11
Printed in U.S.A.
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