A project to re-work DB3A.
- Bring the Emergency Stop control into use for the 3-phase tools (as appropriate)
- Separate the 16A sockets for the Bandsaw and MIG Welder onto individual circuits
- Separate the Pillar Drill and Pedestal Grinder onto individual circuits
- Provide a new 16A socket for the Planer-Thicknesser
- Provide capacity for a new 16A socket in future
The existing board is based on 2 35mm DIN rails, each of 250mm length. These are mounted on a removeable back plate.
Three 4-pole NC contactors are fitted, but only being used as junction blocks at present.
The primary cable entry is via the trunking at the bottom of the box, with a single armoured cable entering on the top-right side.
- Test Emergency Stop contactor power is working and correct.
- Strip existing board
- Strip back armoured cable sheath to ~20mm from point of entry
- Move lower DIN rail down on baseplate to make room for wiring between DIN rails
- Install Schneider 63A 4-pole contactor, connected to E-Stop system
- Replace MCB 4L1/L2/L3 in Main Board with Schneider 32A Type-C breaker.
- Wire new 32A breaker to new E-Stop contactor with 10mm conduit cable
- Install new earth block onto wall of DB3A. Bond cabinet and door to earth block.
- Connect Metal Lathe wiring directly back to MCB 5L1/L2/L3 in Main board - 4-pole junction / 20A
- Install new 16A 3-phase RCBO's for Pillar Drill and Pedestal Grinder
- Install new 16A 1-phase RCBO's for MIG Welder, Planer-Thicknesser and spare circuit
- Install new 6-way DIN rail terminal block for neutral connections
- Install new 4-way DIN rail terminal blocks for L1, L2 and L3 switched connections
- Pull new 2.5mm cable through for MIG Welder socket. Remove old wiring from shared 16A box.
- Install new 20mm conduit in ceiling to centre pillar.
- Pull new 2.5mm cable through for Planer-Thicknesser socket. Install new 16A surface socket on central pillar.