Search Product Q&A's Answered by Jared, the Generator Expert
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My question is what size wire is run between the current transformers and the MB 125 watt meter? I want to install the watt meter in the garage next to my breaker panels. I read the manual and it mentions using 8 gauge wire, but don't see why that would be necessary since a current transformer is used.
David Galliher
from Florida
October 15, 2013
Answer
Thank you for your inquiry!
The MB125 is fitted with 20 AWG wires running from the current transformers to the meters themselves. Reliance Controls specifies an 8 AWG wiring requirement as this metering system is designed to monitor 50 amp loads. That 8 AWG wire would be the power conductor which is being metered, not the wires connected to the current transformer and meter.
It is important to understand that these current transformers are used for monitoring purposes and will not be transmitting any usable power.
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This post is old. Have you ever received an answer if the Reliance MB125 watt meter's donuts can fit over 6 awg wire?
Tom
from Rhode Island
February 28, 2013
Answer
Yes, per the most recent QA I list that you can use #6 with this watt meter. It also says "if it will fit" which is meant as if you are using standard copper wiring. Some aluminum products have a larger diameter and will not fit.
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The owner's manual states that you can not use wire over 8 AWG ? I have 6 AWG wire, will I still be able to use the Reliance MB125 watt meter?
Michael Salonia
from New Jersey
December 20, 2012
Answer
I have discussed this with Reliance Controls and they have said that you can use #6 as long as it fits in the coil (doughnut). They will be reviewing their installation instructions and will update when they get the opportunity.
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Hi Jim,
I have a 7200 watt running/9000 watt peak 120/240 volt generator. I want to monitor both 120 volt legs at the same time. I don’t need to monitor 240 volts at all. The reason for this is to balance the 2 poles. Got any suggestions?
Jay Danielson
from Idaho
April 12, 2011
Answer
A wattage meter only monitors one leg per meter. with model MB125 you wire one leg to one meter and the other leg to the other so you can keep the load balanced. You can view the installation manual on the site under the specs tab.
Owners Manual
