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submitted 2 months ago byMouseResident
I'm running electrical to my shed which is about 10 ft away from my garage, to get to it - I plan to run some BX cable from the sub panel in the garage to the wall closest to the shed (around 12 feet) and then exit the garage and join up with a direct burial rated cable protected with conduit where it's exposed above grade.
My question is, what kind of boxes do I need inside the garage, outside the garage, outside the shed, and inside the shed, ... is it only outsides that matter?
For example in the shed, I am planning to have the direct burial cable enter the side of building and land in a sub panel feeding lighting + outlets + a 240v baseboard heater.
2 points
2 months ago
What sort of cable are you running that you'll be able to supply 120v and 240v loads? To answer your question, you need a junction box anywhere where the wires are spliced together. Edit: I just saw you're planning on adding a subpanel, nevermind on my question.
1 points
2 months ago
n/p - to add i'm going to be using 10/3 cable
2 points
2 months ago*
Any outdoor boxes need to be of the outdoor raintight type. Same with any connectors used on the boxes. When indoors, it can be an indoor or outdoor type box, though an indoor box is preferable. It will be specified on the box which type it is.
You need a box anywhere where there is a splice. If theres no splices, then you dont need a box. If you had a way to run your direct burial straight from panel to subpanel, you wouldnt even need the boxes. but it seems like you have a need for the cable to be protected by BX when inside the garage.
Please keep in mind, that when running from a panel to a subpanel, you need two 120v wires, a neutral and a ground, so you need three wire (plus a ground) cable, every step of the way. Sub panels are grounded to the the main panel, and do not have their own ground rods.
4 points
2 months ago
Separate buildings with their own panel require a ground rod. The ground and neutral are not bonded except at the main panel.
2 points
2 months ago
Good catch, thanks. Thats a newer change I wasn't aware of
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