What standards must be applied to grounds at a work location?

Grounding standards at a work location are critical for ensuring safety during maintenance or repair tasks. The requirement that grounds must be "within sight" ensures that workers can easily monitor the grounding system's status and effectiveness. It allows linemen to see if the grounding system is intact and properly connected, thereby helping to prevent electrical hazards. This visibility is vital for prompt response if issues arise during work.

The other options do not align with the standards regarding grounding. Grounding to the main system is not a requirement since local grounding is often sufficient for safety in various scenarios. Using grounds only in dry weather is impractical as grounding must be maintained regardless of weather conditions to ensure safety. Lastly, marking grounds with paint is not a requirement under electrical safety standards; effectiveness and visibility of grounds are prioritized instead.