Originally Posted By: Brian A. Goodman This post was automatically imported from our archived forum.
“jonofrey” A 25 amp breaker installed serving a Carrier A/C condeser unit with a data plate indicating minimum sized breaker to be 25.4 amps?
The plate actually said 25.4 as a breaker size? Weird. No one has ever made any such breaker. Have you noticed that they almost always list an "in-between" size breaker? Hardly anyone stocks those sizes, so the installer usually has to choose between going under (20 amp) or going over (30 amp). Guess which one means less call-backs?
I would mention it in the report for CYA, but wouldn't lean on it.
Originally Posted By: dspencer This post was automatically imported from our archived forum.
In my opinion the motor has nothing to do with the wire ran to the breaker…as the breaker prevents the wire from overheating…If someone where to change the unit and the wire is not rated properly to the breaker that is the issue.
Originally Posted By: Joey D’Adamo This post was automatically imported from our archived forum.
dspencer wrote:
In my opinion the motor has nothing to do with the wire ran to the breaker...as the breaker prevents the wire from overheating.....If someone where to change the unit and the wire is not rated properly to the breaker that is the issue.
Originally Posted By: dbowers This post was automatically imported from our archived forum.
John -
I don't ever remember seeing a data plate calling for a minimum 25.4 or any other off the wall size breaker. I might guess that it actually said "minimum ampacity to be 25.4 amps". If so it was referring to the wire not the breaker.
Originally Posted By: dspencer This post was automatically imported from our archived forum.
I have NEVER have seen a HVAC installer use a lower gage wire than the breaker is rated for…and if I did find one I would report it…If the motor shorts and draws more amps than the wire is rated for a fire could occur before the breaker trips…I would take a fire in an appliance than in a wall any day.