PPG—During Construction Activities 3-2-13

The OSHA 1910.269 law defines grounding equipment minimum current ratings. The standard requires that grounding equipment shall be capable of conducting maximum fault current that could flow at the point of grounding for the time necessary to clear the fault. This equipment shall have an ampacity greater than or equal to that of ? copper.

2 AWG Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 157, "Occupational Safety and Health Administration Standard Requirements," Paragraph 1, Last Sentence

When working in the vicinity of insulated overhead ground wires, the specified minimum approach distance of ? for a 15-kilovolt circuit must be maintained.

2' 2" Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 154, Paragraph 4

On each conductor, subconductor, or pulling line, 3-phase grounds are placed at increments of no more than ? .

4 miles Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 156, Left Column, Paragraph 2

A preferred method of using both metallic ground mats and barricades provides two levels of protection. A conductive mat is surrounded by an inner nonconductive barrier. A second outer nonconductive barrier is placed around the first at a distance of ? .

5' Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 157, Figure 13-10, "Conductive Mats - Preferred"

Stringing blocks with electrically conductive neoprene linings meet the requirements of grounding stringing blocks and may be used as substitutes.

False Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 153, "Construction Worker Protection Methods," Paragraph 4

When installing and removing a ground cable, always connect the ground end last and disconnect it first.

False Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 154, Paragraph 7

Coiling ground cables will minimize whipping during a fault current event.

False Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 155, Paragraph 3, Bullet 3

Equipment and vehicles connected to a common ground will protect workers whether they are standing on or off of a conductive mat.

False Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 156, "Connecting to Vehicles to Maintain Common Voltage"

Conductor grounds at stringing equipment differ from overhead line maintenance grounds because the wire travels through the grounds.

True Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 153, "Construction Worker Protection Methods," Paragraph 4

When work is being performed from structures, clipping crews are protected by individual grounds installed on the phase being worked.

True Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 154, Paragraph 4

It is a requirement of the utility or employer to provide training for all workers, and they should define and enforce work methods.

True Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 157, "Utility or Employer Requirements"

Driving a ground rod deeper will reduce the earth's resistance.

True Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pgs. 156-157, "Connecting Vehicles to Maintain Common Voltage," Paragraph 3

A stringing operation on structures paralleling energized lines may require ? due to high induction levels.

additional traveling grounds Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 154, Paragraph 8

Where practical, when stringing across energized lines, ? .

block the automatic reclose features of the circuit breakers on the hot line Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 155, Paragraph 5

Maintaining a safe work area is difficult during construction activities because of the ? .

complexity of the work site Reference: PPG - During Construction Activities, "Introduction," Paragraph 1, Sentence 1

Often the weak link in a running ground is the ? .

interface between the grounding wheel and grounding cable attachment point Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 154, Paragraph 3, Sentence 1

Barricading areas around vehicles and equipment at pulling and tensioning sites is a form of ? protection.

isolation Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 156, Figure 13-9, "Barricades"

All vehicles and trailers should be connected to a common ground rod to ? .

minimize the voltage difference between them in case of an electrical contact Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pgs. 156-157, "Connecting Vehicles to Maintain Common Voltage," Paragraph 1

During stringing operations, a ? ground is placed on the conductor or wire rope adjacent to the pulling and tensioning equipment.

running Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pg. 153, "Construction Worker Protection Methods," Paragraph 2

When paralleling ground rods to reduce the earth resistance at a construction site, they must be placed ? .

twice the distance apart that they are driven into the earth Personal Protective Grounding for Worker Safety 2nd Ed. Textbook, Chap. 13, Pgs. 156-157, "Connecting Vehicles to Maintain Common Voltage," Paragraph 3