Split bolt

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Fred B

Fred B

Senior Member
Location
Upstate, NY
Occupation
Electrician
Use of split bolt to splice GEC together. Is it allowed? Seems it would be violation 250.64(C). Any thoughts?
 
infinity said:
It's not irreversible so it's not permitted.
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That's my thought but was wondering if I was overlooking an exception. There appears to be 5 GEC entering panel with 3 landing on the N/G busbar. Bus is full and need to add a subpanel and no spaces to land the N/G conductors for the sub. Residential older 200A 40 space SD HOM with the shorter NG busbars. It appears that per 250.64(F)(3) might allow for a bus connection to interconnect and bonding jumper applied.
 
2 points: "Tapping" one GEC onto another is not a "splice" and split bolts are allowable.

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The bussbar mentioned in 250.64(F)(3) commonly is a bar meeting the specifications noted mounted remotely from a panel
1648038371690.png
 
Would it be allowed to use a split bolt and then melt some plumbing solder into the threads? I have a torch but not a crimp tool.
 
Taps to the grounding electrode conductor to additional service disconnects are not required to be irreversible connections. In fact, for multiple service disconnects the grounded electrode bonding conductor from the grounding electrode conductor to the service disconnects are all permitted to be made using split bolts.

If you are talking about multiple grounding electrodes, each with their own GEC to the service equipment, only one of those is actually a GEC and the rest are bonding conductors. Only the GEC needs to be continuous, and the bonding conductors from the other grounding electrodes can be connected to the GEC with split bolts. Typically the largest conductor from the various grounding electrodes is the continuous one.
 
I get the need to be irreversible part. You don't want some unknowing person undoing it because it is "in the way" of something they are doing.

But, I really don't understand why there isn't some split bolt thing that has a twist off nut or something like that which is irreversible.
 
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JoeNorm said:
Would it be allowed to use a split bolt and then melt some plumbing solder into the threads? I have a torch but not a crimp tool.
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I am still wondering if this would be acceptable or would somehow void the listing go the split bolt?
 
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