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Type: Posts; User: don_resqcapt19

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1. ## Thread: Handbook vs NEC Code Book

by don_resqcapt19
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204

### As far as I know none of the code making panel...

As far as I know none of the code making panel members are involved in the writing of the handbook commentary. The writers are all NFPA paid staff.
2. ## Thread: 250.20 SYSTEM GROUNDING (B)

by don_resqcapt19
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### How does 250.20(B)(1) not require a two wire 120...

How does 250.20(B)(1) not require a two wire 120 volt system to be a grounded system?
3. ## Thread: 250.20 SYSTEM GROUNDING (B)

by don_resqcapt19
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### No, a 120 volt system is required to be a...

No, a 120 volt system is required to be a grounded system. Any system that can be grounded so as to have 150 volts or less from the other conductor(s) to ground, must be grounded.
4. ## Thread: Color of 120/240v phase conductors?

by don_resqcapt19
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### I assume that you wanted to say 230.56 for the...

I assume that you wanted to say 230.56 for the reference to the use of orange, but that rule and the other rules that suggest the use of orange to identify the high leg of a 4 wire delta system do...

by don_resqcapt19
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### I agree. It very strongly suggests that the...

I agree. It very strongly suggests that the connection to earth provides the safety...even more so than does the term "equipment grounding conductor".
6. ## Thread: Grounding electrode required?

by don_resqcapt19
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### So we can apply that same logic here....the...

So we can apply that same logic here....the circuits are not serving the structure, (the wood post), they are serving the equipment (the receptacles).
7. ## Thread: Question on a ground wire leaving a metal box

by don_resqcapt19
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### I have seen the insulation of the conductor cut...

I have seen the insulation of the conductor cut down to bare copper by the sharp edge of a PVC male adapter, but since the adapter is not conductive there was no ground fault.

by don_resqcapt19
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### I am one of those who prefer a change to the term...

I am one of those who prefer a change to the term Equipment Bonding Conductor". The instructors in Canada say this became much easier for the students to understand after they started using the term...
9. ## Thread: SYSTEM GROUNDING 250.20

by don_resqcapt19
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### An example would be the 24 volt control voltage...

An example would be the 24 volt control voltage transformer in a 480 volt MCC. The secondary of that transformer is required to be grounded.
10. ## Thread: EGC through EMT ?

by don_resqcapt19
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### I was not aware of that requirement. Is is an...

I was not aware of that requirement. Is is an actual adopted requirement of just something the inspector wants?

by don_resqcapt19
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### You stopped reading the section too soon. ...

You stopped reading the section too soon.

(B)(1) clearly permits the use of single conductor cables. There are no specific securing and supporting requirements in the NEC the cover the...

by don_resqcapt19
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### But if the neutral is not connected to earth you...

But if the neutral is not connected to earth you can't have a "grounded" system and you can't use the power for any system that is required to be a grounded system by the rules in 250.20.

by don_resqcapt19
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### Most of the single conductors 1/0 and larger that...

Most of the single conductors 1/0 and larger that I install in conduit are marked "CT" on the jacket.
14. ## Thread: EGC through EMT ?

by don_resqcapt19
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### Even if you ran the pipe that you are pulling, it...

Even if you ran the pipe that you are pulling, it is much faster to pull the wire before the drywall goes on. When I did apartments or commercial work, I always pulled all of the wire before they...
15. ## Thread: Ground Rod Myth Video

by don_resqcapt19
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### The standards for both breakers and fuses would...

The standards for both breakers and fuses would permit a 15 amp rated device to carry 20.1 amps forever without tripping. At 20.25 amps the device must open the circuit in one hour or less.

by don_resqcapt19
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### That term is not defined in the NEC.

That term is not defined in the NEC.
17. ## Thread: Grounding electrode required?

by don_resqcapt19
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### But you can say that about any number of the...

But you can say that about any number of the rules found in the NEC:)
18. ## Thread: Grounding electrode required?

by don_resqcapt19
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### Four current carrying conductors sounds like two...

Four current carrying conductors sounds like two branch circuits to me.

No need to debate, just look at Article 100.
19. ## Thread: Grounding electrode required?

by don_resqcapt19
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by don_resqcapt19
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### Show me the requirement for the securing of a 1/0...

Show me the requirement for the securing of a 1/0 THWN conductor in a cable tray.

by don_resqcapt19
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### There are no specific requirements the cover the...

There are no specific requirements the cover the securing of single conductors to the tray. No securing is required for a horizontal cable tray run. Other that horizontal runs just require that...
22. ## Thread: Industrial Grounding/Bonding Nightmare

by don_resqcapt19
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### It is highly unlikely that grounding is the issue.

It is highly unlikely that grounding is the issue.
23. ## Thread: Question on a ground wire leaving a metal box

by don_resqcapt19
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### Take a look at 352.46

Take a look at 352.46
24. ## Thread: EGC through EMT ?

by don_resqcapt19
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812

### While, on large tract housing projects, there may...

While, on large tract housing projects, there may be different crews that do the conduit, they are still all electricians.
25. ## Thread: Bonding conductor size at J-Box

by don_resqcapt19
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### You are pulling all #10s, you are not using #12,...

You are pulling all #10s, you are not using #12, why would you even think about the size of the jumper?...just use some of the scrap #10. Codewise, as seen from the previous posts, the code is not...
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