Linked Questions

0
votes
1answer
224 views

Does a sub-panel in an outbuilding require a ground wire or rod? [duplicate]

My main elect panel in the house has a common neutral/ground bar and not separate bars. If I run from this panel to a sub panel in a detached pole barn and attach the two hots for 240V and one ...
9
votes
3answers
4k views

why is a service neutral grounded but not the subpanel-neutral?

I know it's code (refer to NEC 250.24(A)5 and 250.32), but I don't understand why you can't use a bonding jumper to connect the ground bus and neutral bus in the subpanel? I've been told it's because ...
5
votes
6answers
34k views

Can I install a Subpanel (in a seperate building) using a 3 wire connection (2 hots and 1 grounded neutral)?

Can I use a 3 wire connection (2 hots and 1 grounded neutral) to install a sub panel in a separate structure if I install a separate ground rod to the grounding bus in sub panel? I have 8/3 w/o ...
3
votes
1answer
3k views

240V, 40A stove outlet was split into two 120V, 20A circuits, how do I properly isolate the neutral from ground?

I recently been told that a subpanel box that was installed in my kitchen, which previously supported an electric stove, is wired incorrectly. The subpanel takes the 240 line and splits it into two ...
4
votes
2answers
820 views

How do I wire up a shed for 60A service today with the ability to grow later?

I've been doing my research, reading tons of messages here and on other sites, and I think I know what I need to run power to my shed, but wanted to put it all together and have the collective mind ...
3
votes
4answers
667 views

In Germany, should Ground and Neutral be connected at the main service panel?

It is stated in multiple places (diy.stackexchange, web searches), that "Ground and Neutral should be bonded at the main service panel". My residence in Germany is supplied with 3-phase power, and ...
1
vote
2answers
513 views

Is a 100A breaker adequate for a garage subpanel?

I am a DIYer and want to do this project on my own. I do have a licensed electrician that I can fall back on, and will use at the end of the project to check it, but I'd really like to do this. I've ...
2
votes
1answer
649 views

Replacing subpanel in detached building - yet another ground/neutral question

Here's the situation. I've added on to my detached shop/garage and need to upgrade the very small subpanel. The existing garage pre-dates the 2008 NEC by at least a decade, and is supplied by a 3 ...
1
vote
1answer
277 views

Can you wire a 30A 2P standard circuit breaker “downstream” from a 60A GFCI 2p circuit breaker?

Will this still provide GFCI protection? Is this against code? Does this represent a hazard? I have a subpanel with a 60A GFCI circuit breaker, that I want to use that to feed to 2 30a 240v ...
3
votes
1answer
277 views

Sub panel and ground rod installation: “high differential potential between the ground locations”

We have a dock (fixed-pier) that is about 40 feet from the house, and +100 feet from the main panel. 4-wire (2 hots, 1 grounded neutral, and 1 ground) run to a large junction box at the start of the ...