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Goodman AH2429-1A

You're after the light blue wires According to the wiring diagram and photo posted, the light blue wires in your setup are the C wires. You may need to use a "piggyback" tab crimp terminal ...
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2 votes

Does the NEC recommend metal or plastic boxes for 240V?

Metal can contain arcing much better than plastic. Plus if a hot wire gets loose and touches the box it is an immediate short and breaker trip, where in a plastic box it would be lurking, waiting to ...
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3 votes

Does the NEC recommend metal or plastic boxes for 240V?

The NEC doesn't care what material, so long as it's a listed and approved junction box, of an appropriate size for the number and gauge of wires and other items that count towards "box fill" ...
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3 votes

Does the NEC recommend metal or plastic boxes for 240V?

Depends what your needs are. From a practical standpoint, the purpose of a junction box is to contain any arcing that might occur. It doesn't matter if it's metal or plastic. Metal's big advantage is ...
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2 votes
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Existing thermostat wire colors - no white?

Someone used telephone wire (2-pair red/green & black/yellow) for the thermostat wire here. So, ignore anything you may think applies about "thermostat wire colors" and just pay ...
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Ecobee 3 Lite / Fan Center for Fan Coil / Aquastat

Here is a diagram of how your fan control should be wired: Note that all three boxes on the right are contained in the fan control. The middle box represents the terminal block on the front of the ...
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1 vote

Can I split a single 2500 watt baseboard heater into 2 smaller heaters?

The answer should be yes NEC 220.51 in this case there is not enough diversity in the load electric heat in this case so it is continuous and 1920w max on a 20 a 120v circuit. fixed space heating is ...
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4 votes
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Can I split a single 2500 watt baseboard heater into 2 smaller heaters?

Your plan will work. You'll need to pigtail to the first heater and continue the 240V run to the next heater. NB cable can be run in the walls and individual wires in conduit. Check codes to see if ...
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1 vote
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Lennox Wiring for Ecobee SmartThermostat

The issue was that the C and Y wires apparently went nowhere. I traced them as best I could, but couldn't figure it out. Fortunately, there was a deprecated humidifier control box right next to the ...
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Why does my furnace blower turn on when the thermostat is turned off?

Sounds like you have an intermittent short-circuit affecting the "call-for-heat" wires, or a problem on a circuit board with the same effect as that. Intermittent faults are generally ...
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1 vote

Is it possible that Thermostat Y wire and C wire is the same wire on my air handler (furnace)?

Connect your C to the purple wire The reason the first diagram seems confusing is because they dot the Y wire in from the thermostat to the outdoor unit, but do not specify a color for it. This is ...
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1 vote

How to wire Honeywell MT1 THR830TEU

Here's the diagram that Andrew didn't find helpful: It's pretty obvious to me, though it would have been more obvious if they showed the switch in heating position for the heating diagram. It's a ...
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2 votes

Where can I find a thermostat that will heat and cool without intervention?

The term you're looking for is "Auto Changeover" If the feature simply says "Auto" you're likely looking at a mode for the fan. Auto Changeover Changeover refers to the thermostat ...
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