what are the lashing requirements for service entrance conductors ,line side of main fusing, where they enter a 60 inch "top hat" box on top of the gear. there is about 5-6 feet of conductor from the mouth of the pipes to the main lugs. I feel they need lashing to hold them under a fault condition, but is it required and what is common practice. there are 6 parallel runs of 600kcmil. 3phase 208/120.