CSLB C-46 Solar (Trade Exam) — All Questions
19 questions
What is the maximum arresting force a personal fall arrest system may put on a worker wearing a body harness?
- a.5,000 pounds
- b.3,000 pounds
- c.900 pounds
- d.1,800 pounds✓
Section 1670 limits the maximum arresting force on an employee to 1,800 pounds when used with a body harness. Five thousand pounds is the anchorage strength per employee, not the force on the body.Cal/OSHA Title 8 section 1670(b)
What is the maximum deceleration distance a personal fall arrest system may allow once it begins to stop a fall?
- a.2 feet
- b.10 feet
- c.6 feet
- d.3.5 feet✓
Section 1670 requires a PFAS to bring the worker to a complete stop and limit the deceleration distance to 3.5 feet. Six feet is the maximum free fall before the system engages.Cal/OSHA Title 8 section 1670(b)
How far may a worker free fall when using a positioning device system?
- a.No more than 2 feet✓
- b.No more than 4 feet
- c.No limit, since it is not fall arrest
- d.No more than 6 feet
Positioning device systems must be rigged so that an employee cannot free fall more than 2 feet. The 6-foot limit applies to personal fall arrest systems.Cal/OSHA Title 8 section 1670(c)
A worker shows up with a body belt instead of a full harness for fall arrest on a steep roof. What does Section 1670 say?
- a.Body belts are allowed if the lanyard is short
- b.Body belts are preferred on roofs
- c.Belts may not be used for fall arrest✓
- d.Body belts are allowed below 20 feet
Section 1670 states that body belts shall not be used as part of a personal fall arrest system; they may be used for restraint and positioning within the section's limits.Cal/OSHA Title 8 section 1670(b)
A crew wants to use a spare fall-arrest harness and lanyard to lift a bundle of rails to the roof. Is that allowed?
- a.Yes, if a second worker holds the line
- b.Yes, if the load is under 100 pounds
- c.Yes, if the harness is new
- d.No; harnesses are for employee protection only✓
Section 1670 states that body belts, harnesses and components shall be used only for employee protection and not to hoist materials.Cal/OSHA Title 8 section 1670(b)
Workers are re-roofing a house with a 9:12 roof before a solar installation. At what height must they be protected from falling?
- a.Only above 20 feet
- b.Only above 6 feet
- c.Only above 7 1/2 feet
- d.At any height✓
Section 1731 requires protection on residential roofs steeper than 7:12 regardless of height; the 6-foot trigger applies to roofs of 7:12 or less.Cal/OSHA Title 8 section 1731 (operative July 1, 2025)
When roof jacks support planks on a steep roof, what is the maximum span between jacks?
- a.16 feet
- b.20 feet
- c.6 feet
- d.10 feet✓
Section 1724 states that intervals (spans) between roof jacks shall not exceed 10 feet, and the supported planks must be at least 2-by-6 material or equivalent.Cal/OSHA Title 8 section 1724
What minimum size does Cal/OSHA set for crawling boards used on a roof?
- a.8 inches wide with no cleats
- b.10 inches wide and 1 inch thick✓
- c.6 inches wide and 1/2 inch thick
- d.12 inches wide and 2 inches thick
Section 1724 requires crawling boards not less than 10 inches wide and 1 inch thick, with cleats at intervals not over 24 inches, secured to the roof by ridge hooks or other effective means.Cal/OSHA Title 8 section 1724
At what elevation does Cal/OSHA call for safety nets when fall arrest, restraint and other conventional protection are clearly impractical?
- a.100 feet or more
- b.6 feet or more
- c.25 feet or more✓
- d.10 feet or more
Section 1671 requires safety nets where the elevation is 25 feet or more above the level below and personal fall protection or more conventional protection is clearly impractical.Cal/OSHA Title 8 section 1671
A plywood cover will guard a roof opening during solar work. How strong must it be?
- a.No minimum, if it is marked
- b.At least 100 pounds per square foot
- c.400 lb or twice the load, whichever is greater✓
- d.Strong enough for one worker
Section 1632 requires covers to safely support the greater of 400 pounds or twice the weight of employees, equipment and materials that may be imposed on any square foot, to be secured, and to be marked "Opening--Do Not Remove."Cal/OSHA Title 8 section 1632
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How must a worker climb a portable ladder under Cal/OSHA?
- a.Facing away, with both hands on the load
- b.Sideways, with one hand on the rail
- c.Any way, if the ladder is tied off
- d.Facing the ladder, with three points of contact✓
Section 3276 requires the user to face the ladder and maintain contact at three points at all times — two feet and one hand, or two hands and one foot.Cal/OSHA Title 8 section 3276
A worker wants to carry a PV module up a ladder with both hands. What does Cal/OSHA say?
- a.It is allowed if someone steadies the base
- b.It is allowed if the module is under 50 pounds
- c.It is allowed on extension ladders only
- d.Carrying loads that prevent safe ladder use is prohibited✓
Section 3276 prohibits employees from carrying equipment or materials that prevent the safe use of ladders; materials should be lifted by other means.Cal/OSHA Title 8 section 3276
According to the heat illness standard, how long does acclimatization to heat typically take to peak?
- a.One to two hours
- b.One full summer
- c.Four to fourteen days✓
- d.Six to eight weeks
The standard defines acclimatization as temporary adaptation to heat that peaks in most people within four to fourteen days of regular work for at least two hours a day in the heat.Cal/OSHA Title 8 section 3395
During a heat wave, which employees must be closely observed by a supervisor or designee?
- a.Only employees new to the company
- b.Only employees over age 50
- c.All employees✓
- d.Only employees who report symptoms
The heat standard requires all employees to be closely observed by a supervisor or designee during a heat wave, defined as a predicted high of at least 80 °F and at least 10 °F above the prior five days' average high.Cal/OSHA Title 8 section 3395
What form must an employer's Injury and Illness Prevention Program take?
- a.It may be oral in all cases
- b.It is needed only after an injury
- c.It is kept by the customer
- d.It must be in writing✓
Section 3203 requires every employer to establish, implement and maintain an effective IIPP, and the program shall be in writing. Employers with fewer than 10 employees may communicate safe work practices to employees orally.Cal/OSHA Title 8 section 3203
What written document must a construction employer adopt in addition to its IIPP?
- a.A written Code of Safe Practices✓
- b.A copy of the building code
- c.A marketing plan for new customers
- d.A list of approved suppliers
Section 1509 requires every construction employer to adopt a written Code of Safe Practices relating to its operations, posted at the job site office or provided to each supervisor.Cal/OSHA Title 8 section 1509
When do flooded lead-acid batteries produce hydrogen gas, according to Sandia's NEC guide?
- a.Only when completely discharged
- b.At high charge rates or high cell voltage✓
- c.Never; hydrogen is produced only by lithium
- d.Only when frozen
Sandia's guide says flooded, non-sealed lead-acid batteries produce hydrogen when charged at high rates or when terminal voltage reaches about 2.3 to 2.4 volts per cell; confined and unvented, it is explosive.Sandia, PV Power Systems and the NEC: Suggested Practices
When may insulating gloves and insulated tools be omitted for work on exposed energized parts?
- a.Below 250 V, in all cases
- b.Whenever the work lasts under a minute
- c.When the worker is standing on a dry surface
- d.Below 50 V, after a qualified no-hazard determination✓
Section 2320.2 allows omitting approved gloves or insulated tools for parts energized at less than 50 volts only after a qualified person conclusively determines there will be no exposure to shock, burns, explosion or arc hazards.Cal/OSHA Title 8 section 2320.2
A crew runs a portable generator for tools at a job site. Where must it be operated?
- a.Outdoors, at least 5 feet from openings✓
- b.Under the eave, next to a window
- c.Inside the garage with the door open
- d.Anywhere, if it is fueled while running
The 2022 California Fire Code requires portable generators to be operated only outdoors at least 5 feet from building openings such as windows, doors or air intakes, and prohibits refueling while operating.2022 CFC 1204.5 (County of Lake excerpt)