Questions tagged [bonding]

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do dielectric unions preserve continuity or do the two pipes need to be jumpered to preserve continuity?

Scenario: old house (not mine) with a mix of galvanized steel pipe and copper pipe. Pinhole leak in galvanic pipe, and it was replaced by plumber with a brass nipple and a dielectric union where it ...
mr blint's user avatar
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2 votes
1 answer
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question about neutral/ground bonding when a generator runs a furnace

Looking to power my gas furnace blower with an unbonded inverter generator. Furnace has a hard-wired on/off switch (like a light switch) at the furnace. I don't want to power the circuit at the main ...
jourdin.antonius's user avatar
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Safety of direct bonding to exterior ground for CSST

The instructions for my yellow CSST propane line require it to be bonded where the service enters my home. They also specify not to bond at two points, and not to bond at the appliance. The appliance ...
aaron.kyle's user avatar
1 vote
1 answer
220 views

Sealant between Bilco Bulkhead Door and Cement Base for Water Infiltration - Colder Temperatures

Looking for some guidance on a sealant/caulk that I can use between a Bilco basement metal door, and the cement base it sits on. Temperatures are between 27°-50°F in the swings from night to day, so I ...
RocketManZ's user avatar
3 votes
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Does an original service disconnect without neutral bonding violate code?

Single family home built in 1987. Question is regarding the as-built: Is it grandfathered and does not be updated? There is no neutral-ground bond in the 100A breaker equipped main service disconnect ...
evolvingpowercat's user avatar
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Will a MS Polymer Sealant bond to both PPE (polyphenylene ether) plastic and concrete to create a submersible watertight seat?

I'm researching a waterproof sealant that that will bond PPE (polyphenylene ether) plastic to concrete. I embedded a PPE channel drain section in concrete for use as an intake for a pond pump (...
DaSam's user avatar
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2 answers
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How to patch this part of wall?

I ripped out a stud wall and this hole is what remains. Can this area be filled in with bonding?
hfg124g76g1's user avatar
3 votes
3 answers
483 views

NEC gurus: What does condition 2 mean in the exception to subsection 250.32(B)(1), to not run an equipment ground in a feeder to an out building?

I'm trying to understand the exception in the NEC, subsection 250.32(B)(1), which gives permission to use the grounded conductor as the ground fault current path. Apparently, in earlier code cycles ...
Nicknamednick's user avatar
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Is my understanding of why ground is bonded to neutral (vs not being bonded at all) on a 3 prong dryer connection correct?

I understand the need for a separate ground path back to the panel to trip the breaker on a ground fault when possible. For dryers that connect to a NEMA 10-30R, the manufacturer always indicates to ...
Fred's user avatar
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Acceptable Method for Bonding Metal Pool Fence

I'm in Dutchess County, New York and we are installing an aluminum pool fence similar to one shown in the picture below. The fence is within 5 ft of the pool edge along three sides and further than 10 ...
xrabbi's user avatar
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3 votes
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How to check for pool bonding wire or add one after the fact

I bought a house which has a pool that we believe to have been built in 2001. I am installing a new pool heater and ran into the situation where it asks me to attach the bonding wire. The problem is I ...
Justin Pihony's user avatar
8 votes
1 answer
1k views

Using an Ohm Meter to test for bonding of a subpanel

I'm selling my home and the home inspector is saying my neutral bar is bonded to subpanel box. He is basing this on his ohm meter reading continuity between the neutral bar and the ground bar. There ...
Bill's user avatar
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3 votes
1 answer
289 views

How to secure bonding lug to inside of 4x4 steel junction box?

I'm running some 6 ga armored bare copper wire through the attic spaces as a "grounding bus" for retrofitting grounds to various 1960s-era 2-prong receptacles. This will involve wire ...
Armand's user avatar
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1 vote
2 answers
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Meter Main as Subpanel

I have a meter socket box on a pole with a couple of circuits going to outside. I want to run some feeder wires to a service equipment box on a workshop structure thru underground conduit. Since the ...
Daniel's user avatar
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1 answer
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voltage on ground wire when sub panel is bonded and short to ground

I have a main 200 amp feeder panel which is bonded. It feeds a separate 200 amp distribution panel with about 30 circuit breakers which is also bonded. That situation existed since house was built 12 ...
ctaylor's user avatar
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Would surface-bonding cement be appropriate for this?

I would like to refinish an old wall of previously finished CMU blocks and bricks. See these pictures: (full-size images also available at https://www.dropbox.com/sh/ryr4m5adx6cd22c/...
Peter's user avatar
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Is this CSST bonding proper?

Is it okay for the 6 AWG copper bonding to come in contact with the CSST? Notes: Distances are not drawn to scale; CSST is about 60 feet with bends and turns Assume the black iron is properly ...
MonkeyZeus's user avatar
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1 vote
1 answer
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Bonding gas piping, flexible CSST in conjuction with Iron pipe

I recently became aware of the need to bond a gas distribution containing yellow CSST flexible pipe. (TracPipe FGP SS4 750 5 PSI FUEL It has a yellow jacket) When our propane system was converted to ...
Mike D's user avatar
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1 answer
996 views

Bonding of neutral and ground

I havd a disconnect at meter which supplies a panel about 70 feet inside building. I upgraded the system based on comments from a previous question. At the disconnect, when I add the neutral ...
Herb's user avatar
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Bare ground inside conduit? [duplicate]

I'm finishing up the rough in wiring for a kitchen remodel, but I have a situation where I can't run cables through studs for a light switch because there is no wall cavity. I decided to run it strait ...
Mr. Marron's user avatar
2 votes
3 answers
3k views

Does the ground bar on a subpanel need to be bonded to the subpanel?

I had a lightning strike near my house that damaged the electric in my shed and now I need to replace the subpanel. I have a question about the groundbar. In the subpanel I am replacing the grouond ...
user avatar
2 votes
2 answers
6k views

Should Neutral and Earth be bonded at the meter instead of in the main panel(s) with tandem 200A main panels

In my 2014-built United States mainland home, I have two side-by-side 200A panels. They both have a 200A main breaker. One really neat thing this let me do is have two lighting circuits in the ...
Billy left SE for Codidact's user avatar
2 votes
1 answer
2k views

Grounding requirements for standby generator

I'm installing a standby generator for my son's new home build and have questions about grounding, bonding the genset. We are installing a Kohler RXT 200 amp transfer switch between the meter base ...
George Anderson's user avatar