If a power strip or cord-connected RPT is connected or “daisy chained” to another power strip or cord-connected RPT – it violates the UL listing and is not in compliance with OSHA standard 29 CFR 1910.303(b) (2).

1910.303 – (Electrical) general A power strip must not be connected or “daisy chained” to another power strip. Power strips must be installed and used in accordance with the product’s instructions.

No employer shall permit an employee to work in such proximity to any part of an electric power circuit that the employee could contact the electric power circuit in the course of work, unless the employee is protected against electric shock by deenergizing the circuit and grounding it or by guarding it effectively by insulation or other means.

OSHA’s electrical standards require that listed or labeled equipment be used or installed in accordance with any instructions included in the listing or labeling (29 CFR §1910.303(b)(2)). OSHA’s electrical standards require that outlet devices have an ampere current rating not less than the current load to be served (29 CFR §1910.304(b)(2)).