3 Phase wiring

The plan:


 * Wire in three-phase to the lathe - All prerequisites met, just needs effort and Richard's blessing
 * Remove lights above lathe, remove ceiling tile to gain access to metal trunking running through to Richard's room
 * Remove ceiling tile in the back corner of Richard's room to gain access to trunking corner
 * Run 3x Brown, 1x Blue and 1x Green/Yellow 2.5 mm^2 wire through trunking to above the lathe (From main panel to chemroom, then laser-land, then Richard's world, then above the lathe)
 * Bend and fit 20 mm conduit to fit, various fixings in the electrical boxes in front of the incomer, pipe above workshop
 * Fit 4-Pole disconnect to lathe wiring
 * Tie in 3-ph to existing MCB, disconnect laser supply.

Breakpoint here


 * Install new main isolator and tails - POWER OFF for c. 1 hr - NOTIFICATION required for Tom's server guys at least 48 hrs in advance
 * De-energize meter - npower to come, Ryan to book, unless they're happy that Scott removes main incomer fuses - Requires! - Hot gloves, rubber mat, facemask
 * Remove current 63 A 4-pole disconnect and tails
 * Install new 100 A 4-pole disconnect, meter tails and distro blocks
 * Re-energize meter - npower leaves
 * Wire old panel into new distro blocks

Poss. breakpoint here


 * Remove old panel and re-wire all circuits - POWER OFF for c. 6 hrs - NOTIFICATION required for Tom's server guys at least 48 hrs in advance
 * Isolate system
 * Remove everything south of distribution blocks
 * Install new consumer unit, 3ph panel and contactors
 * Check and throw the main switch
 * Party, 'cos everything will have enough amps and there will be RCD's!