Installing A Sub Panel In A Detached Garage' title='Installing A Sub Panel In A Detached Garage' />Building Without a Permit Code Attorney. Disclaimer. This blog site is published by and reflects the personal views of Linda Pieczynski, in her individual capacity. It does not necessarily represent the views of her law firm or her clients, and is not sponsored or endorsed by them. The purpose of this blog site is to assist in dissemination of information about legal issues relating to building code enforcement, but no representation is made about the accuracy of the information. The information contained in this blog site is provided only as general information for education purposes, and blog topics may or may not be updated subsequent to their initial posting. Welcome to Americas Home Place Photos By Location. When it comes to selecting new home plans and building an on your lot custom built home, Ame. Installing A Sub Panel In A Detached Garage' title='Installing A Sub Panel In A Detached Garage' />By using this blog site you understand that this information is not provided in the course of an attorney client relationship and is not intended to constitute legal advice. This blog site should not be used as a substitute for competent legal advice from a licensed attorney in your state. This blog site is not intended to be advertising for legal services and Linda Pieczynski does not wish to represent anyone desiring representation based upon viewing this blog site in a state where this blog site fails to comply with all laws and ethical rules of that state. How to Run a Subpanel to a Detached Garage. Installing a sub panel in a garage makes it convenient to turn the electricity off and on when needed. You do not want to have to go all the way down to the basement when you need to shut the power off in the garage. The first thing you need to think about is the size of voltage sub panel you will need. This will depend on what you will be doing in the garage. If you are running welders and compressors that require high voltage then you will need a 1. Windows Live Mail Offline Installer 2011 here. Australian Security Systems The Protector Series Standard 21 customer reviews on Australias largest opinion site ProductReview. If you are just doing small jobs then you will only need a 5. The most common outbuilding sub panels are 6. An underground electrical service looks better then unsightly overhead wires. Step 1. Dig an 1. Step 2. Use 1 14 inch PVC conduit for a 1. PVC conduit if the sub panel is 5. Run the conduit from the garage to the main panel box. If concrete has not been poured in the garage, run conduit down into the ground on the inside of the garage. Use a 9. 0 degree sweep connector, instead of a sharp 9. If the concrete is already done, run the conduit up the wall on the outside of the garage and use a PVC LB access fitting to go through the wall where the sub panel box is to be mounted. Do the same at the main panel box. Step 3. Screw a piece of plywood that is 6 inches bigger then the sub panel to the wall where the sub panel is going. This is called a backer. Screw the sub panel box to the center of the backer and connect the conduit to the sub panel. Some local codes require the backer to be painted black. Step 4. Use 8 THHN wire for a 5. THHN wire if the sub panel is 1. Run the wire from the main panel to the sub panel box. Run black, red, white and green wires from the sub panel box to the main panel box. Step 5. In the sub panel, connect the red and black wires to the main lugs on the top of the main buss. Connect the white wire to the neutral buss bar, located along the side of the main bus, and connect the green wire to the ground buss bar, which is connected directly onto the sub panel. Step 6. In the main panel box, install the breaker into the main buss. Connect the red and black wires to the screws on the breaker. Connect the white wire to the neutral buss bar and the green wire to the ground buss bar. Step 7. Test the sub panel with a voltage meter to ensure itl has the correct amperage. Replace the panel box covers and turn the garage breaker on.