I've Installed a transformer that on the secondary has nearly 36' of wire parallel feeding a 120v/208v panel. The engineer over seeing the job has quoted the reference in the code on a particular 10' rule. The problem I have with this rule is there are additional rules dictating that 25' is acceptable ,how does one go about determining whether the 10' or 25' apply. Either way I believe I'm going to be required to put a disconnect at the transformer.
