Nest Learning Thermostat 3Gen and thick wires

[LordBrock]

Hello, all. I have a Learning Thermostat (3rd Gen) and wish to install it in my new residence (new to me, but with an older AC/heating unit). The current thermostat is an older GE unit, with 4 wires only, connected to W, Y, G, and R. The label on the old thermostat reads "30V A.C. 1.5 amps." Put simply, it seems that the wires are too thick to insert into the Nest thermostat. Am I overlooking something? Images attached. And thank you in advance for any insight and suggestions.

[EdwardT]

Hi LordBrock,

Thanks for reaching out. The Nest base can handle 20-30V AC. Regarding the thickness of the wires, Nest thermostats require wires between 18 and 22 gauge, which is standard for residential heating and cooling systems.

You can click on this link to learn more about this.

Thanks,

Edward

[Ryan_G]

Hey everyone,

I'd like to jump in here and check if you've seen Edward's response. Let us know if you need more help by replying to this thread.

Thank you for your help, Edward.

Regards,
Ryan 
 

[Ryan_G]

Hey there,

Thanks for being here in the Google Nest Community. 

I'd like to bump in here and make sure that you’ve seen our response.
Please let us know if you have any other questions or concerns as I will be locking this thread in 24 hours.

Have a great day.

Best regards,
Ryan