Current set up. 3P+N intake taken to 4 100A single pole connectors which have been sealed.. L-N taken from connectors to mechanical time clock. A 3 phase supply is then taken to two 30A 3P BS3036 switch fuses. Post side the switch fuses is a 3P, 415V coil contactor, both housed in separate pressed steel enclosures. A number of 6mm ish single core insulated and sheathed cable are taken from the contactor to a mixture of one and two way BS3036 DB. Post side of the switched fuses, from the blue phase a feed is taken, linked then taken to the time clock, switched contact maybe. Then from the time switch a feed is taken to each contactor via a FCU possible for the coil. Another cable is taken to each contactor, but has no such FCU. The control wiring is done in 4mm ish insulated and sheathed single cores. The control gear, switch fuse and contactor have developed operational issues and need replacing. Not sure who owns the switch fuses and contactors. A very untidy installation, cables appearing to go everywhere.
I was wondering what the replacement options where given the three phase is only used for night storage heaters so timed controlled would have to be kept, no daytime boost.
Your thoughts please.
