![]() ![]() What’s unusual about this number on air conditioner data plates is that it often doesn’t jive with the chart I listed above. The maximum size will be clearly labeled on the compressor label. To determine the right circuit breaker size for an air conditioner, we look at both the minimum and maximum size allowable. The minimum circuit ampacity also tells us the minimum size of the circuit breaker it needs to be sized large enough to help prevent nuisance tripping when the air conditioner first turns on. To paraphrase from EIOED, this is because air conditioner compressors contain thermal cutouts designed to help prevent damage to the units, and these would open before it became a problem for the wires. If it says 34 amps, like in the example below, we need 8-gauge wire.Īgain, in the case of air conditioners, we don’t need to match up the size of the circuit breaker to the wire sizes. If it says 15.1 amps, we need to step it up to 12-gauge copper wire. If the minimum circuit ampacity says 14.9 amps, we’re good with 14-gauge copper wire. I use the simplified chart above to help determine this. The minimum circuit ampacity tells us how big the wire needs to be. These units all have a label applied to them that tells us the minimum circuit ampacity, and the maximum fuse or circuit breaker size. An OCPD is a generic tongue-twister for a circuit breaker or fuse.įor air conditioners and heat pumps, the only thing we need to look at is what’s printed on the compressor unit. Note: while I say circuit breaker throughout this post, what I really mean is the overcurrent protection device, or OCPD. One such place where these rules for circuit breakers or fuses don’t apply is for air conditioners and heat pump circuits. Wires can be larger, but not smaller than this… for the most part. Thankfully, this simplified chart works for most of the stuff I come across as a home inspector. While the true formula for figuring out exactly how much current a wire can carry is fairly complicated, most home inspectors rely on a simplified version of this for branch circuits: Breaker or Fuse (amps)įor the full story, you’d have to start with table 310.15(B) (16) in the National Electric Code, but there are a ton of exceptions that make it challenging to fully figure out the exact answer. Circuit breakers protect the wires from overheating. When a wire is too small for a circuit breaker, you have a potential fire hazard. Module Body Computer, Rear Distribution UnitĢ020-2021: Intelligent Battery Sensor (IBS) 1.One of the standard things home inspectors look at while inspecting an electrical panel is comparing wire sizes to circuit breakers sizes. Supply IPC/Starter Device/System Keyless Enter-N-GoĪssignment of the fuses in the engine compartment (2020-2023) № Supply ParkSense, Spot Lights Front Dome, Mirror, Electric Motor Retractable Roof, Heated Front Seats, Stabilizer Battery, ESC System, ESL Supply Uconnect System, Air Conditioning, Alarm, Power Folding Outside Mirrors, USB Port Supply IPC/Starter Device/System Keyless Enter-N-Go™Īssignment of the fuses in the engine compartment (2016, 2017) Cavityĥ0 Amp Red -1.4 With A/C And All 2.4 Modelsġ0 Amp Red - 1.4 Engines 25 Amp Clear - 2.4 Enginesġ0 Amp Red - 1.4 Engines 15 Amp Blue - 2.4 Enginesġ2V Rear Cargo Outlet Constant Battery PoweredĪssignment of the fuses in the dashboard (2016, 2017) Cavityįlashes/Electrical Movement Front Seats/Fan Air Conditioning Supply ParkSense, Spot Lights Front, Dome, Mirror, Electric Motor Retractable Roof, Heated Front Seats, Stabilizer Battery, ESC System, ESLĪlarm Power, Front Courtesy Light, Air Conditioning Compressor, Brake Pedal Switch (NC), Plaque Automatic Transmission, Compass, Rear Camera, Leveling Headlights, Air Conditioning ![]() System Power Forward Collision Warning Plus, All Wheel Drive (AWD), IPC Supply Uconnect® System, Air Conditioning, Alarm, Power Folding Outside Mirrors, USB Port Module Body Computer, Rear Distribution UnitsĮngine Control Module Power, Automatic TransmissionĮlectronic Unit Supply Automatic TransmissionĪssignment of the fuses in the dashboard (2014, 2015) Cavityįlashes/Electrical Movement Front Seats/ Fan Air Conditioning Fuse box diagrams 2014, 2015 Engine compartmentĪssignment of the fuses in the engine compartment (2014, 2015) Cavity ![]()
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