Rules and Guidelines
Want to participate in the discussions? Please read our Community Rules and Guidelines. Need some help? Visit Support and Answers.

  • State Not Answered
  • Locked Locked
  • Replies 14 replies
  • Subscribers 32 subscribers
  • Views 1436 views
  • Users 0 members are here
Options
You may also be interested in
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Connecting up Sockets in either office or home

Former Community Member
Former Community Member
Hi All,

Was wondering best way to connect power to new set of 6 13A Double Sockets would it be best to use 63A RCD and 32A MCB with 2.5mm2 cable coming from MCB to the sockets I guess would you need 2 32A MCB's to have 3 sockets connected at any one time?.Then connect 16mm2 cable from the Main Power Source to the 63A RCD.The Power source consisting of 2x 4KVa Transformers and industrial sockets 110v,230v & 400v so Welders can work on the different floor levels (ie 2 Floors & Office on Ground).Also for lighting I assume its the same set up but with 6A MCB and 1.5mm2 Cable coming from the MCB.Jimmy
Parents
  • 0
    Also lighting may well be on a 6A breaker, being the smallest common size, but equally if there is a lot of it, there could equally be 10A or even 16A lighting circuits in some cases, and cable used may be 1mm, 1.5mm or 2.5mm, or even heavier sizes if the runs are very long and voltage drop is an issue.

    Equally if the load does not amount to a row of beans (and with LED fittings this is often the case) then the cable may be thinner and the length of cable run longer than you may expect based on older systems.


    As an initial rule of thumb, a cable run of 100m or more is 'long'  in that sense, and really you need to start to calculate the voltage drop properly, rather than just simply look up the current rating of the cables, when the bulk of the load is going to be around 50m or more from the incoming supply - of course it all depends on the building layout, and exactly how the load is distributed along the circuit etc - a cable with all the load at the far end is the worst case but to avoid over-sizing  or under-sizing the design, there is  no substitute for a tape measure and then a calculator.
Reply
  • 0
    Also lighting may well be on a 6A breaker, being the smallest common size, but equally if there is a lot of it, there could equally be 10A or even 16A lighting circuits in some cases, and cable used may be 1mm, 1.5mm or 2.5mm, or even heavier sizes if the runs are very long and voltage drop is an issue.

    Equally if the load does not amount to a row of beans (and with LED fittings this is often the case) then the cable may be thinner and the length of cable run longer than you may expect based on older systems.


    As an initial rule of thumb, a cable run of 100m or more is 'long'  in that sense, and really you need to start to calculate the voltage drop properly, rather than just simply look up the current rating of the cables, when the bulk of the load is going to be around 50m or more from the incoming supply - of course it all depends on the building layout, and exactly how the load is distributed along the circuit etc - a cable with all the load at the far end is the worst case but to avoid over-sizing  or under-sizing the design, there is  no substitute for a tape measure and then a calculator.
Children
No Data

Community Rules & Guidelines