steel beams bonding mike holt s forum

3 phase transformer grounding & bonding - ECN Electrical

Mar 27, 2004 · look at the "bonding the neutral " question i posed last week. hope it helps. i noticed you said you suspended the xfmr from the steel trusses. i hope you used sprinkler type beam clamps and attached them to the top part of the truss? putting a large load on the bottom of a truss is not allowed in the state i work in, yet, it is rarely caught by the "electrical inspector".

ARTICLE 250 Grounding and Bonding - Mike Holt

and bonding requirements:(1)t systems and equipment are required to be grounded. Wha tive materials, such as metallic water or gas piping, steel-fram-ing members, metal ducting, reinforcing steel, or the shields of communications cables. Mike Holts Illustrated Guide to Understanding 2011 NEC Requirements for Grounding vs. Bonding. ARTICLE 250 Grounding and Bonding - Mike Holt and bonding requirements:(1)t systems and equipment are required to be grounded. Wha tive materials, such as metallic water or gas piping, steel-fram-ing members, metal ducting, reinforcing steel, or the shields of communications cables. Mike Holts Illustrated Guide to Understanding 2011 NEC Requirements for Grounding vs. Bonding.

BX cable ground question - Mike Holt Code Forum

Feb 26, 2002 · It is not a grounding conductor, it is a bonding strip which bonds the entire length of the flexible armor, making the armor an acceptable equipment grounding conductor(250.118(9)). 2)the other one is Metal Clad cable, type MC. It has a full sized insulated equipment grounding conductor, but no bonding strip, so the armor is not a ground by itself. BX cable ground question - Mike Holt Code ForumFeb 26, 2002 · It is not a grounding conductor, it is a bonding strip which bonds the entire length of the flexible armor, making the armor an acceptable equipment grounding conductor(250.118(9)). 2)the other one is Metal Clad cable, type MC. It has a full sized insulated equipment grounding conductor, but no bonding strip, so the armor is not a ground by itself.

Bonding questions Trouble Free Pool

Sep 01, 2020 · I put his response below. I figured bonding and grounding my pool was the PBs job. Thoughts? ====PBs response==== Pool must be bonded in a minimum of 4 places. We will provide a pig tale wire attached to the back of the pool beam and it is the deck contractor responsibility to run a bond wire or bond grid. CHAPTER METHODS AND MATERIALS - Mike Holt 102 Mike Holts Illustrated Guide to 101 Essential NEC Rules Rule 61 300.3 (2) Grounding and Bonding Conductors. Equipment ground-ing conductors can be installed outside of a raceway or cable assembly for certain existing installations. See 250.130(C). Equipment grounding

CHAPTER METHODS AND MATERIALS - Mike Holt

102 Mike Holts Illustrated Guide to 101 Essential NEC Rules Rule 61 300.3 (2) Grounding and Bonding Conductors. Equipment ground-ing conductors can be installed outside of a raceway or cable assembly for certain existing installations. See 250.130(C). Equipment grounding Electrical Training Solutions |Mike Holt EnterprisesMike Holt worked his way up through the electrical trade from apprentice electrician through electrical contractor, to become one of the most recognized experts in the world as it relates to electrical power installations. He was a Journeyman Electrician, Master Electrician, and Electrical Contractor. In 1974, Mike realized there was a need for quality electrical training and opened Mike Holt

From Mike Holt on CSST - InterNACHI® Forum

Apr 03, 2019 · From Mike Holt on CSST. Specific Inspection Topics. Electrical Inspections. The CSST Industry has maintained that direct bonding and grounding will help prevent CSST from receiving lighting damage. CSST (Corrugated Stainless Steel Tubing) has been used for approximately two decades to pipe and deliver fuel gas in businesses and residences From Mike Holt on CSST - InterNACHI® ForumApr 03, 2019 · From Mike Holt on CSST. Specific Inspection Topics. Electrical Inspections. The CSST Industry has maintained that direct bonding and grounding will help prevent CSST from receiving lighting damage. CSST (Corrugated Stainless Steel Tubing) has been used for approximately two decades to pipe and deliver fuel gas in businesses and residences

From Mike Holt on CSST - InterNACHI® Forum

Apr 03, 2019 · From Mike Holt on CSST. Specific Inspection Topics. Electrical Inspections. The CSST Industry has maintained that direct bonding and grounding will help prevent CSST from receiving lighting damage. CSST (Corrugated Stainless Steel Tubing) has been used for approximately two decades to pipe and deliver fuel gas in businesses and residences Ground Rod For Residence ? Electronics ForumsJan 01, 2006 · There was also info from a Mike Holt video from Orlando where he drove a 10' rod with a water table about 3' down, connected 120V and got a current of about 1.5A (implies 80 ohms). He added lengths do a depth of 50' where the current was 14A (implies 8.6 ohms). Any idea why such dismal results? Oddity of Florida? bud--

Grounding Do's Don'ts & Why Part 2 Page 4 QRZ Forums

Mar 03, 2012 · If your tower is constructed using a concrete blocks in the ground to support it, all you need to do is bond the anchor bolts and reinforcement steel, then bond a minimum #6 AWG jumper to the reinforcement steel to tag a leader out to be bonded to the rest of the GES. I know for fact they can because I am a Moderator on Mike Holt's NEC Code Grounding Do's Don'ts & Why Part 3 Page 24 QRZ ForumsJul 09, 2017 · That was me KF5LJW aka as dereckbc on Mike Holt Code Forum where I am a moderator. My name is Dereck. I am a Professional Engineer who has worked in Telecom and Radio for 40 years. I was a member of NEC Code Making Panel 9, and contributor author of IEEE Emerald Grounding and Bonding Sensitive Electronic Equipment.

Grounding Do's Don'ts & Why Part 3 Page 24 QRZ Forums

Jul 09, 2017 · That was me KF5LJW aka as dereckbc on Mike Holt Code Forum where I am a moderator. My name is Dereck. I am a Professional Engineer who has worked in Telecom and Radio for 40 years. I was a member of NEC Code Making Panel 9, and contributor author of IEEE Emerald Grounding and Bonding Sensitive Electronic Equipment. Grounding of a Wye transformer Secondary Electrician TalkMar 01, 2017 · It would also need bonding jumpers all the way back. By Mike Holt, NEC Consultant Grounding and Bonding - Article 250, based on the 2017 NEC - Part 1 . Now, when i say building structure, its usually a heavy i-beam coming off of a main structural column. One time we did get dinged, was when we used a split bolt to connect our new system

Grounding requirements for Mobile Home.

Jan 03, 2012 · Here is another copy and paste from MIKE HOLTS forum "Consider 550.32 The service equipment for a mobile home must be within 30 ft. and grounding electrodes are installed at the service. I can only deduce that when a service is within this zone it is considered part of that structure (mobile home) . Now read the exception to 550.33 (A). Grounding to building steel Mike Holt's ForumMar 24, 2010 · Well first thats not the way to ground building steel and a beam clamp is not used to bond a rebar or a beam in that manor . On rebar if you cant cadweld it. Use a regular ground rod clamp its the way to do it right . Ill find you a picture of our beam attachment we use its a clamp but its made for a beam and it doesnt come of ever .

Grounding vs Bonding Part 10 of 12 EC&M

All Code references are based on the 2005 NEC. The grounding and bonding requirements in this column apply to solidly grounded systems that operate at not more than 600V, such as 120/240V, 120/208V, and 277/480V. You've probably seen project requirements that call for the grounding of piping systems and exposed structural steel. Those requirements, although well intended, miss the mark. Mike Holt on UK forum Page 2 Electrician TalkOct 30, 2016 · Supplementary bonding of pools over here is only required if there is any electrical equipment within 3.5 meters of the pools edge. Bonding is then only done to extraneous conductive parts. To ascertain if a conductive part is extraneous a continuity test is done between the main earth terminal and the conductive part in question.

Mike Holt on UK forum Page 2 Electrician Talk

Oct 30, 2016 · Supplementary bonding of pools over here is only required if there is any electrical equipment within 3.5 meters of the pools edge. Bonding is then only done to extraneous conductive parts. To ascertain if a conductive part is extraneous a continuity test is done between the main earth terminal and the conductive part in question. Mike Holt on UK forum Page 4 Electrician TalkOct 31, 2016 · Bonding is not bad when it is required. The approach of bonding items of conductive metal that have zero chance of bringing in an earth potential is pointless and is bringing in an earth potential when previously there was none there. For example. Say there was a steel handrail that was secured to a timber beam near the pool.

Mike Holt's Forum

Mike Holt's Forum. New posts Active Forums. Business Management / Estimating. Business Management. Threads 14.4K Messages Bonding and Grounding. Threads 7.8K Messages 84.9K. Threads 7.8K Messages 84.9K. EGC on neutral bar. Mike Holt's Newsletters. Go directly to a list of all Mike's Newsletters. Latest posts. Mike Holt's ForumNov 13, 2020 · Mike Holt's Forum. New posts Active Forums. Business Management / Estimating. Business Management. Threads 14.4K Messages Bonding and Grounding. Threads 7.8K Messages 84.9K. Threads 7.8K Messages 84.9K. Unknown symbol. Today at 8:44 AM; Mike Holt's Newsletters. Go directly to a list of all Mike's Newsletters. Latest posts. A.

Properly grounding / bonding a transformer with building steel

Mar 30, 2012 · You can bond in the transformer or in the first disconnect. Bonding in the transformer is how you generally see it done. MikeHolt has a picture somewhere on his website I've seen. I bring the neutral to a double lug on the XO. From there I bond to the case with a lug that has multiple taps on it. Bring my GEC, EGC's and other bonding to that point. Steel building grounding Mike Holt's ForumNov 06, 2008 · OK, Let's assume that the steel structure has every steels connected with each other and the building has 100 steel column. How many steel column need to be grounded with ground rod? I am not asking the bonding jumper between steel column to electrical grounding system.

Transformer Installation - Mike Holt Enterprises

May 16, 2002 · By Mike Holt for EC&M Magazine . Grounding and Bonding [250.30(A)]. of at least 20 ft of one or more bare or zinc galvanized or other electrically conductive coated steel reinforcing bars or rods of not less than ½ in. in diameter, or consisting of at least 20 ft of bare copper conductor not smaller than 4 AWG. Transformer Installation - Mike Holt EnterprisesMay 16, 2002 · By Mike Holt for EC&M Magazine . Grounding and Bonding [250.30(A)]. of at least 20 ft of one or more bare or zinc galvanized or other electrically conductive coated steel reinforcing bars or rods of not less than ½ in. in diameter, or consisting of at least 20 ft of bare copper conductor not smaller than 4 AWG.

Unbonding the neutral whenusing a - Mike Holt Enterprises

Feb 15, 2002 · The bonding of equipment ground and neutral can be in the panel. There is no need for an additional ground conductor from the panel to the generator. IP:67.227.222.25. Member Name:Ed MacLaren Email:[email protected] Location:Canada Title:Instructor In Trade Since:1955 Registered:Nov 2001 Total Posts:701. posted February 08, 2002 at 08 Unbonding the neutral whenusing a - Mike Holt EnterprisesFeb 15, 2002 · The bonding of equipment ground and neutral can be in the panel. There is no need for an additional ground conductor from the panel to the generator. IP:67.227.222.25. Member Name:Ed MacLaren Email:[email protected] Location:Canada Title:Instructor In Trade Since:1955 Registered:Nov 2001 Total Posts:701. posted February 08, 2002 at 08

Unistrut feet

Fitting standard size Unistrut Service Company strut (also referred to as a channel) at 1-5/8 (one and five-eighths inch), Unistrut Strut Feet is a lightweight, strong, and durable 3 (three-inch) diameter and 0.5 (half an inch) thick rubber part weighing 3 ounces. grounding pole building sheet metal? DIY Home Jul 08, 2007 · This rule doesn't require you to bond sheet metal framing members (studs) or the metal skin of a wood frame building , but doing so is a good practice. Size the bonding jumper for the structural metal per Table 250.66, based on the feeder or service conductors that supply the building (or structure).

main bonding to structural steel ElectriciansForums.net

Jun 12, 2011 · Depends what your drilling the structural steel for, .If your drilling and tapping for a bolted connection, there shouldn't be any problem, or a suitably sized nut and bolt come to that!!! It's a bit different drilling a 20mm hole for a cable to pass through. main bonding to structural steel ElectriciansForums.netJun 12, 2011 · Depends what your drilling the structural steel for, .If your drilling and tapping for a bolted connection, there shouldn't be any problem, or a suitably sized nut and bolt come to that!!! It's a bit different drilling a 20mm hole for a cable to pass through.

when is lightning protection required? - ECN Electrical Forums

Mar 27, 2008 · Steel frame buildings with nonconductive, but nonflammable, outer coverings (like brick or other masonry) also offer a high degree of protection against lightning damage. The greatest hazard is posed by pieces of masonry being dislodged by stroke currents passing through the outer coverings to reach the structural steel underneath. Steel beams bonding Mike Holt's ForumMay 15, 2010 · Steel beams bonding Section 250.66(A) where the grounding electrode conductor or bonding conductor and that the conductor is the sole connection to system, is not required to be larger than a 6 AWG. Now, if the conductor from the ground rod is connected to the system or service neutral conductor, you have met this requirement, but not if you

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