Morning all,
Really hoping to get some advice / confirm what a few of us are thinking about a job in the future.
Back ground - We have to swap over existing 3 phase meters on DBs throughout a building, however due to the nature of the clients work we are unable to kill the supply to each board and work dead.
Our main concern is those pesky CTs that are currently connected to the old meters, these will be staying and reused on the new meters, however to get the new meters to fit we need to do some work etc so the CTs will be disconnected from any meter for around an hour potentially which we know poses a serious issue.
In an ideal world i know we would turn off the supply and work dead but as i said that is not an option, if we were to remove the leads that go to each CT from S1 and S2 on the old meter, link them together to short them out and then also take a link down to earth would this be the best solution or is there a better way to proceed?
Any advice would be greatly appreciated.
Cheers
Really hoping to get some advice / confirm what a few of us are thinking about a job in the future.
Back ground - We have to swap over existing 3 phase meters on DBs throughout a building, however due to the nature of the clients work we are unable to kill the supply to each board and work dead.
Our main concern is those pesky CTs that are currently connected to the old meters, these will be staying and reused on the new meters, however to get the new meters to fit we need to do some work etc so the CTs will be disconnected from any meter for around an hour potentially which we know poses a serious issue.
In an ideal world i know we would turn off the supply and work dead but as i said that is not an option, if we were to remove the leads that go to each CT from S1 and S2 on the old meter, link them together to short them out and then also take a link down to earth would this be the best solution or is there a better way to proceed?
Any advice would be greatly appreciated.
Cheers
