code exam question

[PCBERRY]

Exam question; A 20 amp 240 volt single phase copper branch circuit supplying lighting on a metal pole at a traffic intersection shall be permitted to contain; a)2#8 &#8gr b) 2#10 &#12 gr c) 2#10 when polebase is bonded to the rebar cage d) 2#12 when a ground rod is driven

 

[celtic]

What answer do you say?


....then we will all chime in w/our answers

 

[PCBERRY]

2#8 and #8 ground since all other options appear to be non code compliant

 

[celtic]

2#8 and #8 ground since all other options appear to be non code compliant

You got it

 

[roger]

I agree too, your code reference would be 250.122(B)

Roger

 

[celtic]

I agree too, your code reference would be 250.122(B)

Roger

Thanks for code there Roger.

I remembered this question as someone asked it recently....I wanted to link to it for the OP ~ but cannot find it.

Do you recall that thread?

 

[JohnJ0906]

Thanks for code there Roger.

I remembered this question as someone asked it recently....I wanted to link to it for the OP ~ but cannot find it.

Do you recall that thread?

I think it was on ET (Different forum)

 

[celtic]

I have a great memory...I just can't remember where I read stuff.....or where my car keys are at

 

[Designer69]

B seems right to me

 

[LarryFine]

B seems right to me

Uh-oh. Prepare for a barrage of "Where does the NEC permit the EGC to be smaller than the BC conductors when using #10 or smaller?"

 

[Dennis Alwon]

Uh-oh. Prepare for a barrage of "Where does the NEC permit the EGC to be smaller than the BC conductors when using #10 or smaller?"

????. I think the poster is agreeing with the others.

 

[raider1]

Uh-oh. Prepare for a barrage of "Where does the NEC permit the EGC to be smaller than the BC conductors when using #10 or smaller?"

OK ready for the barrage.

250.122(B) requires that when ungrounded conductor are increased in size the equipment grounidng conductor must increased in size proportionately according to the circular mil area of the ungrounded conductors.

Chris

 

[raider1]

????. I think the poster is agreeing with the others.

Dennis, answer b was 2 #10's and 1 #12 EGC.

Chris

 

[Dennis Alwon]

Dennis, answer b was 2 #10's and 1 #12 EGC.

Chris

I thought the poster type 8 as in #8 wire-- better put the oculars on.

 

[raider1]

I thought the poster type 8 as in #8 wire-- better put the oculars on.

Quite alright Dennis.

Chris