110.11 "deteriorrating agents",bonding mast

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stew

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got a correction today on 110.11. This was an original knob and tuber installatyion located on a covered porch outside. The service equipment was installed within a wooden cabinet lined with asbestos 1/8 sheets. The service disconnect was a 3 pole open knife switch with the neutral and both hots fused w 60 amp fuses. Then looped to the meter which was also located in the cabinet(wooden Hinged door).The service consisted of fuses on hots and neutrals as was the stlye in 1929. The knob and tube with all tubing still intact was attached to this open system and was in very good condition. The failure was of the service conductors and one knif on the switch that was bad. We replaced with a nice 200 amp panel adjacent to the original. tore out the guts of the old and used a 12/12 plastic j box to get the knob and tube to the new panel.. I came out of the panel wiht a plastic 2" lb and 2 45 degressw plastic fittings to get around a corner and go up. Went uo about 2 ft to an FA and used 2" rigid from the FA for our mast. Now the inspector wants me to bond the mast? And also wrote us for the 110.11 violation which I assume he means any of the knob and tube that is inside this old cabinet that is exposed befor it gets to the J box. About 10 or 12 inches before it enters the yop of the cabinet and dissapears within the walls. I always thoght that 110.11 was for arewas where there were chemical and gases etc. Therre is a sewage treatment plant across the street that has of course some odor but deteriorating gases. Hardly. This install would have lasted another 75 years if the connection at the knife switch hadnt burnedd off. Any Input?
 
Re: 110.11 "deteriorrating agents",bonding mast

I agree that the mast should be bonded. He could be citing 110.11 for the old K & T conductors in a wet or damp location. Since these conductors are outside he could be citing that portion of 110.11 and not the chemical and gases portion. You need to speak to the inspector to find out exactly what you're violating.
 
Re: 110.11 "deteriorrating agents",bonding mast

394.12 Uses Not Permitted.
Concealed knob-and-tube wiring shall not be used in the following:
(1) Commercial garages
(2) Theaters and similar locations
(3) Motion picture studios
(4) Hazardous (classified) locations
(5) Hollow spaces of walls, ceilings, and attics where such spaces are insulated by loose, rolled, or foamed-in-place insulating material that envelops the conductors
I don?t see where the use of K&T is not allowed as this installation states.
I to would question him on his thinking and show him article 394 so he know where he can find just what he is talking about.
:)
 
Re: 110.11 "deteriorrating agents",bonding mast

The requirement to bond masts and meter bases is found in 250.92(A). 250.92(B) tells how to do it.
 
Re: 110.11 "deteriorrating agents",bonding mast

Stew, see art. 250.4." Non-current carrying conductive materials enclosing electrical conductors or equipment, or forming part of such equipment, shall be connected together and to the electrical supply source in a manner that establishes an effective ground-fault current path."

Sounds like that mast needs bonding to me, or replaced with a sch. 80 pvc mast.
 
Re: 110.11 "deteriorrating agents",bonding mast

Is this riser screwed into a hub?
Is this hub screwed to the can with four screws?
Wouldn?t this bond the mast?
:confused:
 
Re: 110.11 "deteriorrating agents",bonding mast

Originally posted by jwelectric:
Is this riser screwed into a hub?
Is this hub screwed to the can with four screws?
Wouldn?t this bond the mast?
;)
 
Re: 110.11 "deteriorrating agents",bonding mast

He simply does not want the steel mast floating.A fused neutral is a very scary thought.Glad to see that will go away.

[ December 08, 2005, 05:52 PM: Message edited by: jimwalker ]
 
Re: 110.11 "deteriorrating agents",bonding mast

I see the need now for bonding the mast. will do easily. The inspectors call on the other issue was due to the fact that we used regular staples to secure the #4 to the side of the structure and he wants a non rudting staple or strap to be used. I do have some fence staples that are galv. but my helper doesnt like them. H ewill like them from now on however. thanks for the inputs.
 
Re: 110.11 "deteriorrating agents",bonding mast

Stew I know a few insps. that would tag you for using fence staples as a means of support,Not sure of the actual article # right now but I can see the tag in front of me now (unaproved method of securing grnd wire)Petty oh yes but would they tag it in a second and then look harder at the job.I don`t advocate taging it just saying what would tagged be here.
 
Re: 110.11 "deteriorrating agents",bonding mast

A horseshoe shaped staple that fits nice and snugly over a #4 awg and galvanized and you think it mite be tagged? Why would they tag it? Its a galvanized staple for gods sake! Oh well tag away and then give me a code reference.
 
Re: 110.11 "deteriorrating agents",bonding mast

Originally posted by stew:
A horseshoe shaped staple that fits nice and snugly over a #4 awg and galvanized and you think it mite be tagged? Why would they tag it? Its a galvanized staple for gods sake! Oh well tag away and then give me a code reference.
They make a little jiffy clip that fits exactly on a #4 solid copper ground wire. They're galvanized. That's what I normally use.
 
Re: 110.11 "deteriorrating agents",bonding mast

Originally posted by stew:
A horseshoe shaped staple that fits nice and snugly over a #4 awg and galvanized and you think it mite be tagged? Why would they tag it? Its a galvanized staple for gods sake! Oh well tag away and then give me a code reference.
Why would a staple cause a red tag. As stew asked what code section would be violated? Don't tell me something from Article 110.
 
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