commercial 3 phase

commercial 3 phase

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  1. E

    Three phase rcd protection

    Hi guys, I am rewiring a commercial launderette with 3 phase machinery. Does the machinery need to be RCD protected being in commando sockets. The sockets are not accessible to the public and each circuit is being used for a specific machine. With the price of three phase rcbos the...
  2. HEXx99

    Best way to get 480V power to machine with limited options.

    The machine is a Sunnen CK-21-E used for Honing. I cannot find any manuals but ill post the tag. I dont believe its multi-voltage which would make this a lot easier for me. It says 480V and its pulling 12 Amps full load. Location is in a warehouse. Only power nearby is 2ea. 208V panels both...
  3. B

    single phase to 3 phase

    I have a single phase system that uses 320 amps and 240 volts and I rewire the circuits for 3 phase what size generator would I need and how many amps on each leg
  4. M

    Can a 3 phase motor that is running on single phase have 2 directions?

    I am needing to know if this wiring diagram is showing a few things: 1: Does this show a 3 phase to single phase conversion? 2: Does this show that the motor can turn in 2 directions with the same internal wiring if you toggle the SPDT switch?
  5. Sparkingmad

    Pro Electrician John Little

    Local friendly and reliable electrical company with 30 years experience in commercial, domestic & industrial fields. Wether it’s that extra socket in the kids bedroom to a garden lighting design and install, you will get the same level of service. In need of a new lighting design or upgrade to...
  6. D

    UK BS88 fuse board on a new installations

    I was wondering, are BS88 fuse boards still used on some new installations especially industrial and even commercial. And if so would that be ok with the regulations or not because its not retrospective. I know they are quite outdated and its hard to find a electrical wholesaler selling BS88...
  7. J

    3Ph supply to sub panel

    Hello all, after some advice please. I have got a small job installing some 16a commando sockets in a farm workshop. The workshop has a 3ph sub DB on the wall which is fed from the main DB on the other side of the wall, about 25m away. The sub DB is supplied from two lots of 6mm2 twin in 25mm...
  8. T

    Advice on 461.2 needed

    Hi folks, Just need a bit of advice regarding whether or not neutrals require switching. - 3 phase board, 3 pole main switch, neutral is un-switched. 416.2 (ii) states that switching of the neutral is not required if the conductor is reliably connected to earth by a low resistance to meet the...
  9. V

    commercial 3 phase board swap

    Hi all, ive got a 3 phase board to replace in a commercial premise, the whole building had a EICR about a year ago, which was very thorough.( a mate did it) My aim was to just test the circuits in the board to be replaced and issue a cert,the board feeds two sub mains aswell. just want to...

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