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What Size Sub-Panel Should I Install for My Garage?

How to Install a Sub Panel for a Garage: Where to Begin when Installing a Sub Panel for a Garage, Planning for a Sub Panel, Identify the Sub Panel Circuits, Sizing a Garage Sub Panel, 120 Volt and 240 Volt Circuits, Planning for Future Circuits.

Installing a Sub Panel for a Garage

Electrical Question: I currently have power ran out to my garage, however it only runs 2 lights and the wiring is old.

Any advice would be greatly appreciated.
Received from Danny a Homeowner in West Frankfort, IL.

Dave’s Reply:
Thanks for your electrical wiring question.

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  1. murray berkowitz says:

    I think I have an open neutral in one of my circuits. I get a test lamp to light from hot to ground, but NOT hot to neutral. My non-contact detector picks up current in all 3 wires: hot, neutral and bare ground. could a nail have struck the neutral wire behind the wall? I have switched off the circuit breaker at the panel since I believe this is an unsafe condition, but i need help in trouble shooting this further. I’ve never encountered this before.

    • Dave Rongey says:

      Hi Murry,
      When the neutral of a 120 volt circuit is lost it is typically due to a bad connection at one of the receptacles, a bad or burnt splice in a junction box, or a burnt connection in the panel where the neutral wire is connected to the neutral terminal strip.
      These are the areas I focus on and then make the appropriate repairs to restore the connection.


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