Bend radius adapters can be used to form connections between low-gauge electrical wires or cables, and can provide greater flexibility in the manner in which low-gauge electrical wiring or structures with equivalent load capacity can be routed through and within electrical systems and associated structures. For example, when electrical systems are being upgraded or repaired, it may be difficult or impossible to route lower-gauge or additional wiring through existing structures such as conduits and junction boxes without violating safety standards regarding the minimum bend radius of such wiring. The use of bend radius adapters can provide additional flexibility in utilizing existing electrical system structures, and can simplify installation of other electrical components.