Tag Info

New answers tagged

1

Whoever told you the meter was the point of disconnect was dead wrong. The main panel or disconnect is the first means of overcurrent or disconnect. THIS is where your neutral bond must happen. 2011 NEC Article 250 Grounding and Bonding II. System Grounding 250.24 Grounding Service-Supplied Alternating-Current Systems (B) Main ...


1

The grounded (neutral) conductor is bonded to ground in one location. It's common to bond the grounded (neutral) bus and the grounding bus in the panel, but it's not a requirement. The grounded (neutral) conductor can be bonded before the panel, but you'd then be required to keep the grounding and grounded (neutral) conductors separate after that point. So ...


0

Apart from electrical considerations, one should avoid having dissimilar metals in long-term contact, especially in what could be damp or humid conditions. Electrolytic corrosion could compromise one or the other of the metals. That's why, for example, you need to use copper clamps and copper nails to fasten copper water pipe...


2

There is no such thing as BX cable. Are you working with Type AC cable (armored cable), or Type MC cable (metal-clad cable)? Metal-Clad Cable (Type MC) Type MC cable has a grounding conductor, and the sheath cannot be used as a grounding conductor. If you're working with MC cable, it's not likely any fault condition could lead to the ducting becoming ...


2

Armored cable is meant to resist damage to the conductors from contact with other materials (like a duct). The armor itself is grounded when properly installed, and touching other metal should pose no risk (assuming the armor is not so bent or compressed as to expose the conductors).


-3

I find it a better model to think of it this way: electricity wants to 'go home' to where it is made. For our homes, this 'home' is the secondary winding of the transformer. If we want the breaker to trip, we want to provide any 'lost' electricity to be able to find a good, solid, low resistance back to that transformer. Hence the desire for having separated ...



Top 50 recent answers are included