Can you think of any obvious pitfalls of subcontracting hire of equipment under the EC Subcontract?
Yes, I can. The Engineering & Construction Contract and Engineering & Construction Subcontract are for the procurement of ‘works’ / parts of a project of medium to major complexity and risk, not hire of ‘goods or services’.
If by hire of services without specifying the purpose, you mean ‘consultants’, then the Professional Services Short Contract could possibly be used using time charge.
For other services, the Term Services Short Contract may be might possibly be suitable.
However, for other goods and services the NEC3 family does not have a suitable form.
If you want to give me a specific then I might be able to help further.