Determine Which Type of plug in terminal block Determine 
Do you have a screw-in or a plug-in connection? Screw-in wires are secured inside the terminal block and are commonly used with equipment that doesn’t need high voltage protection.Plug-in wires have a male connection at the end and are connected to a female port located on the terminal block, which creates a secure connection. You can find plug-in blocks in the fuse boxes of cars. Terminal blocks come in different shapes and sizes, so choose one that makes the most sense for where it’ll be installed.
Secure the Connection
How to Connect Wire to Screw Terminal Block
Make sure the equipment is turned off before proceeding.
First, strip a small amount off the insulation off of the end of the wire (about one inch or so).
Unscrew the terminal block’s retaining screw, then place the wire inside the hole.
Tighten the screw, making sure that it’s secure. If the wire is loose, it’ll eventually melt the insulation.
How to Connect Wire to Plug-in Terminal Block
Place the terminal block where you want it.
Run the electrical wires to the terminal block, and connect the male terminals to the female ports.
Make sure the connections are secure.
Test Terminal Block Connection
After you’ve secured the connections, it’s time to test the equipment to make sure everything’s working as it should. Additionally, you’ll also want to check the terminal block; make sure the connections aren’t hot to the touch and are still secure. Again, loose wires will damage the equipment and cause a fire hazard.
You Need
Do you have a screw-in or a plug-in connection? Screw-in wires are secured inside the terminal block and are commonly used with equipment that doesn’t need high voltage protection. Plug-in wires have a male connection at the end and are connected to a female port located on the terminal block, which creates a secure connection. You can find plug-in blocks in the fuse boxes of cars. Terminal blocks come in different shapes and sizes, so choose one that makes the most sense for where it’ll be installed.
Secure the Connection
How to Connect Wire to Screw Terminal Block
Make sure the equipment is turned off before proceeding.
First, strip a small amount off the insulation off of the end of the wire (about one inch or so).
Unscrew the terminal block’s retaining screw, then place the wire inside the hole.
Tighten the screw, making sure that it’s secure. If the wire is loose, it’ll eventually melt the insulation.
How to Connect Wire to Plug-in Terminal Block
Place the terminal block where you want it.
Run the electrical wires to the terminal block, and connect the male terminals to the female ports.
Make sure the connections are secure.
Test Terminal Block Connection
After you’ve secured the connections, it’s time to test the equipment to make sure everything’s working as it should. Additionally, you’ll also want to check the pluggable terminal block; make sure the connections aren’t hot to the touch and are still secure. Again, loose wires will damage the equipment and cause a fire hazard.