[RE-wrenches] Split bolts

[RE Ellison]

Usually just by using an ungodly amount of tape, rubber tape and standard tape ! Three layers standard electrical tape then rubber tape then more standard electrical tape.

The first layer of standard electrical tape seems to help keep the rubber tape from getting pierced by the sharp edges

Good day,
Bob Ellison

> On Jun 25, 2014, at 2:14 PM, "William Miller" <william at millersolar.com> wrote:
> 
> Friends:
>  
> I narrowly avoided catastrophe yesterday.  I created a tap connection on a 200 amp main breaker.  I wrap split bolts with Scotch 2229 mastic and then cover that with a generous layer of Scotch 33+ tape. 
>  
> On this occasion, just as I was putting the dead front in place I noticed the glint of metal poking through the mastic and tape.  The points on the legs of the split bolt are sharp and the mastic and tape had crept away from this point and exposed a tiny point of metal.  This point would have contacted the dead front lightly or at least would have been in close proximity.  Had I energized the breaker, I would have had a significant arc.  I unwrapped both connectors so both bolts had the legs facing away from the dead-front, creating a good ½” of clearance and then wrapped them more carefully.
>  
> 30 years ago I had access to rubberized cloth tape that we used instead of the mastic.  I suspect the cloth tape is more durable than the mastic, but I don’t see it in the supply houses anymore.
>  
> How do the rest of you wrap split bolts so you are confident that the mastic won’t creep away from a high point on the connector?
>  
> Thanks in advance.
>  
> William
>  
> <image003.jpg>
> Lic 773985
> millersolar.com
> 805-438-5600
>  
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