UL 508A Industrial Control Panel Build
It's often necessary to connect multiple wires to a single terminal in electrical panels, but the method depends on the specific device's specifications.
Methods for Multiple Connections:
Jumpers: Can be used across fuse holders or circuit breakers, though they might reduce the panel's interrupt rating.
Distribution Blocks: Allow a main power input to feed multiple connection points.
Accessory Blocks: Some breakers have attachable blocks that provide extra connection points while maintaining the breaker's safety ratings.
Double Ferrules: Using these with an approved crimping tool allows two wires to be treated as a single connection under one lug.
Multi-Conductor Fuse Holders: Certain fuse holders are designed to accept multiple wires in a single terminal, as long as wire size and total area specifications are met.