Ask Experts Questions for FREE Help !
Ask
    rhill's Avatar
    rhill Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Sep 17, 2010, 06:01 AM
    Inside of a disconnect box
    I am installing a hot tub and needed to know about the neutral bus bar and the ground bus bar. How do I look at these and know which one is which.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
    Uber Member
    		  
    #2

    Sep 17, 2010, 06:14 AM

    The Ground Bar is screwed directly to the enclosure, and will have greens and/or bare wires. A Neutral Bar will have the white wires and will be isolated from ground. They are at the same potential and should have Zero volts between them.
    rhill's Avatar
    rhill Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Sep 17, 2010, 06:23 AM
    Comment on Stratmando's post
    Thank you for this simple answer to my question. Most everything else I have read gave me way too much information... hope you have a great weekend!
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
    Uber Member
    		  
    #4

    Sep 17, 2010, 04:22 PM

    To add to the above, The white carries current and the ground is attached to all metal parts of the system, if a hot wire brakes free in a box, instead of becoming live, it shorts to ground and trips breaker.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

In a spa installation does the GFI breaker go in the disconnect box or main panel? [ 2 Answers ]

In a spa installation does the GFI breaker go in the disconnect box or main panel?

Midwest hot tub disconnect box ground bar? [ 2 Answers ]

Hi All, I've recently taken on the adventure of setting up the basic wiring of a Midwest hot tub breaker box "service disconnect" with 50 AM GFCI breaker installed. The disconnect box I purchased has an aluminum bar (ground I assume) inside the box that can be connected (?) to one of the three...

Bonding and grounding main disconnect to inside service [ 0 Answers ]

I am upgrading the service to my house and would like to ask what is the correct way to bond and ground the new meter base and a separate outside disconnect to the inside service with main breaker that is about 20 feet away. It's a 200 amp meter can, the outside separate disconnect is 200amp to a...

Factory installed jumper inside 3 Phase disconnect [ 7 Answers ]

I have a 3 phase 30 amp disconnect switch that was sent out to a job, it is being used as A disconnecting means for a fujitsu mini split air conditioning system which is a 1 phase 208 volt system. In the disconnect there is a # 10 jumper between the load side of B phase to the line side of A...

Is there a timed automatic CB Box disconnect? [ 2 Answers ]

I am looking for a way to disconnect all the power within a 200A, 42-slot, panel board (supporting single phase, 208VAC). I have found a 3-pole relay that could handle 150A and I could connect the control side to a 7 day timer and install it in a separate NEMA 1 box BUT I was looking for something...

View more questions Search