Blackburn E-9H-25 SPLIT BOLT 10 STR - 12 SOL

The E-9H-25 is sized for 10 AWG stranded down to 12 AWG solid conductors. That's a small-gauge branch circuit and grounding range, so it's the wrong part if you're tapping 8 AWG or larger, you'd need a bigger split bolt in the series.

Yes, for small-gauge work. It's a mechanical split-bolt connector in silicon bronze alloy, which is the standard material for direct-burial and concrete-encased ground taps because it resists corrosion and matches copper conductors galvanically. Range is 10 AWG stranded through 12 AWG solid, so it covers equipment grounding conductors in that size, not larger electrode conductors.

The E-9H-25 is a silicon bronze alloy body. Bronze split bolts are made for copper conductors; aluminum and copper-to-aluminum taps call for a connector specifically listed and marked AL9CU or CU9AL, usually aluminum-bodied and used with an inhibitor compound. Don't put bare aluminum in a bronze split bolt.

Yes. A split-bolt connector like the E-9H-25 is a bare mechanical tap with no insulation of its own, so any splice made inside a raceway or enclosure on an insulated circuit conductor has to be re-insulated, typically with rubber splicing tape built up over the bolt and then vinyl electrical tape, or a split-bolt insulating cover. Grounding taps are usually left bare.

A split bolt is a mechanical connector, tightened with a wrench, so it needs no dies or crimp tool and can be taken apart and reused, which is why electricians and MRO crews keep them for field taps and grounding. Compression connectors need a matched tool and die and are permanent. For a 10 to 12 AWG tap where you want a torque-tightened, serviceable joint, the E-9H-25 is the simpler choice.

Mexico. That is the stated country of origin for the E-9H-25, which matters for buyers filing Buy American or trade-compliance paperwork on a government or institutional job.