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The cable which feeds your sub panel should match the ampere capacity of the new panel. To determine what amperage you need, refer to the panel rating and the manufacture's instructions included with the sub panel. Also check your local Code. Also be sure that the sub panel you buy has sufficient capacity for the number of circuits you wish to connect to it. Installing a sub panel requires use of two circuits in the main panel. Be certain your new sub panel can accommodate these two ciruits plus your additions.
If there is no main shutoff, do not attempt the work. Call an electrician.
1. Before starting switch the main circuit breaker to "Off" or remove main fuse. BE CAREFUL! Remember the incoming power cable and breakers are still live even though the rest of the box has been disconnected.
2. The sub panel is usually mounted next to your main panel and connected with a conduit nipple.
3. Run your extension cable from the main panel to the sub panel through the conduit nipple. Make sure that there is extra cable at each end to make the actual connections.
4. Cut the insulated wires long enough to connect to the screw terminals, neutral bar and equipment ground bar.
5. The black and red wires connect to the screw terminal at the top of your new panel, the white wire connects to the neutral bar, and the green or bare wire connects to the equipment ground bar.
6. Cut the wires within the main panel long enough to connect to the branch breaker terminals, the neutral, and the equipment ground bars of the main panel.
7. The black and red wires are connected to the branch breaker terminals, the white wire is connected to the neutral bar, and the green or bare wire is connected to the equipment ground bar.
8. You are now ready to add branch circuits to your sub panel.
If there is no main shutoff, do not attempt the work. Call an electrician.
1. Before starting switch the main circuit breaker to "Off" or remove main fuse. BE CAREFUL! Remember the incoming power cable and breakers are still live even though the rest of the box has been disconnected.
2. The sub panel is usually mounted next to your main panel and connected with a conduit nipple.
3. Run your extension cable from the main panel to the sub panel through the conduit nipple. Make sure that there is extra cable at each end to make the actual connections.
4. Cut the insulated wires long enough to connect to the screw terminals, neutral bar and equipment ground bar.
5. The black and red wires connect to the screw terminal at the top of your new panel, the white wire connects to the neutral bar, and the green or bare wire connects to the equipment ground bar.
6. Cut the wires within the main panel long enough to connect to the branch breaker terminals, the neutral, and the equipment ground bars of the main panel.
7. The black and red wires are connected to the branch breaker terminals, the white wire is connected to the neutral bar, and the green or bare wire is connected to the equipment ground bar.
8. You are now ready to add branch circuits to your sub panel.