Verifying high voltage on a part (for using ESP8266 to trigger relays)

Using Arduino General Electronics
#1

TL/DR - I want to verify that these two phoenix connectors can handle high voltage (110V - standard household voltage, with <= 4 amps):

The relay I’m planning to use is this: https://www.digikey.com/products/en?keywords=CPC1965G

I realize this may be a stupid question because the datasheets clearly say the phoenix connectors support well over 110V and over 10A. But with high voltage I figure better safe than sorry and people here might have best practices.

Project overview: I’m using a NodeMCU to act as a wifi interface to turn on and off a set of outlets into which I will plug in decorative lights. My friend built a version of this using XBee years ago and I’m upgrading it to be usable via WiFi with a node MCU.

More detail:
I have 110V coming into the PCB to a 2 port phoenix connector, then going through a relay as you can see in the schematic. The NodeMCU is powered via 5V and then reads settings from an 8-dipswitch, and uses an I2C IO expander. It turns the relays on and off according to signals.

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schematic.png
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#2

The connectors are rated adequately for what you are doing, however the relay won't cut it.

The relay is rated for 1 A MAX. without derating :frowning:

For reliability you should only use this relay below 0.5 amp. You stated you need up to 4A so you will need another relay.

Not knowing what you plan for a board, what ever you do keep the 120 VAC physically away from any of the arduino signals.

#3