Aleman
Senior Member
- Location
- Southern Ca, USA
Just want to introduce myself. My name is Steve K and I am employed as an Maint Electrician/Industrial Electrician. I am not certified but lately I have been doing a lot of electrical work. My background is with machinery and industrial controls, PLC's, automation, along with some electrical installation work. I understand a lot of what I am doing but I run into questions about what I see. I have noticed that different electricians do work to their personal standards which at times does not seem correct to me.
An example...120V single phase circuits with no ground wire, using the conduit for the ground.
Another example is multiple hot conductors sharing a single neutral. In this case the hots are different phases but from what I understand the proper way to wire would be a separate neutral for each hot.
One more that I am not sure about is a 100A 208 3 phase 4 wire service. The ground buss is being used for the single phase branch circuits but the conduit itself is what connects the panel to the ground in the main switchgear. There is no separate wire for ground and the ground buss is not connected to the neutral buss. That doesn't seem right to me, but I did see something on the net that suggested 3" conduit would be considered ok as a ground conductor. Is this correct?
I have an Ugly's and a pdf copy of the NEC but the thing reads like a lawyer wrote it. So whatever advice I can get here would be greatly appreciated.
Steve
An example...120V single phase circuits with no ground wire, using the conduit for the ground.
Another example is multiple hot conductors sharing a single neutral. In this case the hots are different phases but from what I understand the proper way to wire would be a separate neutral for each hot.
One more that I am not sure about is a 100A 208 3 phase 4 wire service. The ground buss is being used for the single phase branch circuits but the conduit itself is what connects the panel to the ground in the main switchgear. There is no separate wire for ground and the ground buss is not connected to the neutral buss. That doesn't seem right to me, but I did see something on the net that suggested 3" conduit would be considered ok as a ground conductor. Is this correct?
I have an Ugly's and a pdf copy of the NEC but the thing reads like a lawyer wrote it. So whatever advice I can get here would be greatly appreciated.
Steve