WHATSIZE BREAKER AT MAIN PEANEL FOR A 50AMP PEANL INSTALL
So either install the second panel beside the first or a 100 amp disconnect beside the first panel and feed out of the disconnect to the new panel located where you need it. You can have up to 6 disconnects per service, but they must be located adjacent to each other or in the same enclosure. What size wire do I need for 100 amp service 100 feet away When it comes to the lines connecting master and secondary panels, where the line will carry as much as a full 100 amps, use a 2-gauge non-metallic sheathed electrical cable.The cable must contain one or two hot wires depending on your needs, one neutral wire, and one ground wire. If you had a 100 amp panel on a 200 amp service (or increase the size of the service, check with your power company on the size of your service, you could add a second 100 amp panel in parallel with the first. Be careful since everything about doing this is dangerous.Another AnswerYes, you can have two breaker panels in parallel. Usually a subpanel has a means to separate the neutral and ground in a subpanel. Remember that ground and neutral are only "bonded" at the main panel.
For example a 100A breaker might be typical. You put two 50Abreakers in the 100Apanel and feed each subpanel with conductors from one 50A or the other (i.e., two hot conductors, a neutral and a grounding conductor).
Troubleshoot connections while under full load with an infrared imaging instrument to find hot spots. A multimeter isn’t likely to uncover such problems. But watch for old installations where connections have deteriorated and/or fuses have been in service for a long time. The Amperage of this subfeed breaker should match the rating of the new panel. These can be as low as 2 to 1 (100A main versus 50A branch fuse 2 to 1). Get the current draw of the main panel, and after subtracting your draw, the remainder can power the sub-panel. You put a breaker in existing panel and use that to feed the subpanel. Can you run an additional breaker panel parallel to the existing one?
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