While pressure washing a tank, the wand should be:

• A. Be insulated from the tank
• B. Electrically bonded to the tank
• C. Left unbonded for flexibility
• D. Connected to a grounded floor outlet

Answer: (B)

Bonding the wand to the tank keeps everything at the same electrical potential, which prevents static electricity from building up and discharging as a spark. When you’re pressure washing a tank, especially if vapors or flammable substances are present, a spark could ignite the contents. A direct conductive bond provides a safe path for any static charges to equalize quickly between the wand, hose, and tank, reducing the risk of a discharge.

Insulating the wand would trap charges rather than prevent them from accumulating. Leaving components unbonded misses the chance to equalize potential, increasing spark risk. Connecting to a grounded floor outlet doesn’t guarantee the wand and tank share the same potential, and it can introduce another improper path for current rather than ensuring a proper bond between the critical parts.