USA wiring question

[Fox's Mercantile]

On 2/27/20 9:46 AM, bruce2bowser@gmail.com wrote:

Why not just to the one where the branch circuits all
connect (if different from where the meter is)?

At the risk of stating the obvious, because that's code.
Despite what everyone else states.

It's there for protection to make sure the line voltages
are referenced to ground.

Simply put, one and only one ground, and it's at the
service entrance.

If you insist on putting in a second ground, such as at
a well/pump house, or an amateur radio station, the
grounds must remain separate.


--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com

 

[Ron D.]

Since the pump house is a "detached" structure, the pump house panel should have a local ground rod for lightning protection. Ground and neutral should remain separated.

The number of breakers determine whether or not it needs a main breaker. Memory says >6.

Panels are divided into two major categories "main lug" or "main breaker". "main lug" is wired for separated N and ground. "Main breaker" has a "main breaker" and the N and G are bonded together.

Usually there is a way to unbond the neutral and you purchase a ground bar kit to add to the panel. This gives you the separate G and N connections and a disconnect for that sub-panel.

You can read the NEC for free online.

 

[Michael Terrell]

On Thursday, February 27, 2020 at 10:46:58 AM UTC-5, bruce2...@gmail.com wrote:

On Wednesday, February 26, 2020 at 10:20:06 PM UTC-5, Fox's Mercantile wrote:
On 2/26/20 7:26 PM, Tom Biasi wrote:
On 2/26/2020 1:10 PM, pfjw@aol.com wrote:
If you do not have an existing separate ground coming from the house,
you will need to add a ground rod in the pump-house to ground the
sub-panel.

A sub panel should not have the neutral and earth ground bonded. They
need to be separate.

Absolutely. The ONLY place the Neutral should be connected to ground
is a the service panel (the one with the Meter).

Why not just to the one where the branch circuits all connect (if different from where the meter is)?

What happens when that one wire opens? A bad neutral is a very common fault. Then you have no place for a fault current to go. RIP!.

 

Why not just to the one where the branch circuits all connect (if different from where the meter is)?

What happens when that one wire opens? A bad neutral is a very common fault. Then you have no place for a fault current to go. RIP!.

Its even worse, if that one wire opens disconnecting the machine from the neutral/ground, the case of the machine can become electrically live because current will flow through the load to the ground/neutral.

Anyone touching the case could be shocked.

m

 

[Jeff Urban]

>As usual, you are wrong.

Mm Hhm.

You say what you want Means nothing.

 

[Fox's Mercantile]

On 3/5/20 3:00 AM, Jeff Urban wrote:

As usual, you are wrong.

Mm Hhm.

You say what you want Means nothing.

I suppose it wouldn't if you have zero comprehension.


--
"I am a river to my people."
Jeff-1.0
WA6FWi
http:foxsmercantile.com