1. Electric wiring installed in aircraft without special enclosing means (open wiring) offers the advantages of ease of installation, simple maintenance, and reduced weight. When bundling open wiring, the bundles should A. be limited as to the number of cables to minimize damage from a single electrical fault. B. include at least one shielded cable to provide good bonding of the bundle to the airframe. C. be limited to a minimum bend radius of five times the bundle diameter to avoid excessive stresses on the cable insulation.