Infinity Fan Coil Breaker Tripping

[jtrammel]

I didn't know that was still allowed, the cable run is 20' long how much did they save by doing that?
The breaker hasn't tripped since I replace it.
Dealer still coming out on Monday.

It's not that they "saved" anything it's that 10/2 is what is used for 240volt circuits. 3 wire would be used for a 120v 3 way switch, among other things.

[ATC USN]

Electricity is not a guessiing game. People that don't understand it should leave it alone

I have a masters in electrical angering worked in aerospace for over 30 years, I think I can understand a "one wire" electrical circuit.

Looking at my CB panel water heater 10 3, pool pump 10 3, oven 10 3, cook top 10 3, dryer 10 3, compressor 8 3 back up heat 6 3, just saying.

[carmon]

there is no water heater that is 10/3 so try again... just saying

[jtrammel]

You must be counting the ground as a conductor. 10/2 with ground has 2 insulated conductors and 1 bare copper ground wire, 10/3 with ground has 3 insulated conductors and 1 bare copper ground wire. If they used 10/2 with no ground (like old cloth sheathed wire) then they should have changed the wire to 10/2 with ground.

[ATC USN]

You must be counting the ground as a conductor. 10/2 with ground has 2 insulated conductors and 1 bare copper ground wire, 10/3 with ground has 3 insulated conductors and 1 bare copper ground wire. If they used 10/2 with no ground (like old cloth sheathed wire) then they should have changed the wire to 10/2 with ground.

I’m not counting the ground I know the difference between 10 2 and 10 3.

My water heater is connected to a disconnect panel and a demand response unit they used 10 3 from the main breaker panel to the disconnect panel.

They used 10 2 Romex for the new fan coil, the circuit was previously used for the old condenser.

The old condenser seized, I think the technician damaged the breaker trying to get the old compressor to turn on, he reset it numerous times, eventually it stopped tripping and started making a loud buzzing noise.

I replaced the breaker on Saturday, I’m still waiting for the installer to come out and check the system.

[ATC USN]

The technician came out checked the wiring and ran the electric heat test, but never checked the current draw.
He asked if the breaker tripped why isn’t there a voltage fault? I asked said how can if register a fault if the unit isn’t getting any power.
I noticed the fan coil has two 60 amp breakers but the unit is fed by a 60 amp circuit and a 30 amp circuit the fan coil has a 10K and a 5K electric heater pack.
Shouldn’t the 5k heater pack have a 30 amp breaker not a 60 amp?
It's the 30 amp breaker on my load center that is tripping.

[ATC USN]

My dealer replaced the heater pack, the problem was a 8 inch section of coil was stretched out and tangled, looks to me like it got snagged during installation.