We are doing a gas station- the dispensing portion. Do the conduits coming up out of the ground at the wireway--on the exterior of the building require bonding bushings? If so-- can we use a listed ground clamp on the conduits outside the wireway and terminate that bonding wire on the ground buss in the trough?
Bonding
- Thread starter j-dub
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- Location
- Logan, Utah
Take a look at 514.16 for the grounding and bonding requirements for motor fuel dispensing facilities.
Chris
Chris
Chris. Classified Location is a weak area of mine. I have had the same question as the OP and as I read the reference (501.3) my opinion is that bonding locknuts/bushing would be needed. However, I NEVER see that on installations I have observed. Am I overlooking a loophole ?
- Location
- Logan, Utah
You are correct, bonding bushings or locknuts are needed on the conduits in Class 1 locations in accordance with 501.30.
Classified locations are one of the areas a lot of people (myself included) are weak. I believe that is the reason you don't see the proper bonding in motor fuel dispensing facilities.
Chris
bonding
bonding
I have read N.E.C. 501.30 and it states that the locknuts are not to be depended on for bonding--R.E. 250.100 and 250.32b, 259.92b 2-4. This shows fittings that are approved\listed for bonding. I myself have never seen this application carried out either--thus the question origin. I personally thought the seal off ended the clasified area at the building. My other question was if it does have to be bonded --is external clamps as shown in exhibit 250.32 acceptable installed as a bonding jumper externally mtd. and of course terminated in the wireway ground bar.
bonding
I have read N.E.C. 501.30 and it states that the locknuts are not to be depended on for bonding--R.E. 250.100 and 250.32b, 259.92b 2-4. This shows fittings that are approved\listed for bonding. I myself have never seen this application carried out either--thus the question origin. I personally thought the seal off ended the clasified area at the building. My other question was if it does have to be bonded --is external clamps as shown in exhibit 250.32 acceptable installed as a bonding jumper externally mtd. and of course terminated in the wireway ground bar.
- Location
- Logan, Utah
The bonding requirements of 501.30 are required to followed all the way back to the service equipmnet or the point of grounding of a separately derived system.
I believe that external bonding jumpers using listed clamps and fittings would be acceptable.
Chris
I believe that external bonding jumpers using listed clamps and fittings would be acceptable.
Chris
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