Jon,
As a matter of fact there is always a big fire extinguisher near the layout, however
even thou the transformer tables look crowded, everthing was safe and secure, not one wire out of place. Never had a problem with my original ZW or KW transformers either.
Still have not heard one good reason why I should purchase a new ZW-L, instead of an original. Might invest in a new Z4K with side receiver however, along with another original ZW.
PCRR/Dave