If there is no clear distinction between floor-standing and tabletop types for the EUT, how should the test equipment arrangement be determined?

If there is no clear distinction between floor-standing and tabletop types for the EUT, how should the test equipment arrangement be determined?

If there is no clear distinction between floor-standing and tabletop types for the EUT, the decision is often made by considering the installation conditions in actual use, such as the impedance to GND.
If various patterns are possible, perform both tests.
(Specific examples)
On a metal structure (example: distribution board): low impedance ⇒ floor-standing equipment
On an insulating material (example: fire alarm, indoor fluorescent light): high impedance ⇒ tabletop equipment