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But if he chooses a main switch RCD is that something that can be done with a 30ma.
That depends on what type of protection you want the RCD to provide.
Discuss No RCD on entire installation in the Commercial Electrical Advice area at ElectriciansForums.net
But if he chooses a main switch RCD is that something that can be done with a 30ma.
But that does not provide the required protection for the buried cabling.I am personally leaning towards putting RCD sockets on all 3 that I have worked on.
But if he chooses a main switch RCD is that something that can be done with a 30ma.
Concur. One fault will take out the whole office. Not what you, or the client will want.Not an option IMHO..............
IM sure he said previously that there were 2 mcbs disconnected
Enough room for an rcbo?
if you look at the work you have undertaken on 3 sockets I would go for RCD protection local to the work you have undertaken, after testing the circuit you have joined on to. the reason for this if you put an upstream RCD in circuit & there is a problem on equipment it could trip & you could be blamed for the circuit tripping.No room for RCBO's, CU already chock full.
I think I will speak to the client and see which direction he wants to go. I am personally leaning towards putting RCD sockets on all 3 that I have worked on. But if he chooses a main switch RCD is that something that can be done with a 30ma.
& if for a server I would think twice about RCD protection as above post #42, I would tend to run in a new circuit for server & clean earth.if you look at the work you have undertaken on 3 sockets I would go for RCD protection local to the work you have undertaken, after testing the circuit you have joined on to. the reason for this if you put an upstream RCD in circuit & there is a problem on equipment it could trip & you could be blamed for the circuit tripping.
if circuit / circuits test out okay install a RCD socket outlet issue a minor works anything plugged in will trip your RCD socket only & not trip the whole circuit / circuits, at this point you have protected your work & covered yourself.
Or an RCD socketIMO, he has made alterations to the circuit, at the very least the spured socket should be off a RCD FCU or up front RCD in closure for the circuit in question.
Or an RCD socket
But that does not provide the required protection for the buried cabling.
Many many legacy CUs just physically do not have a spare 20mm above the existing MCBs. Older ones often have solid neutral busbars and other obstructions that just make fitting an RCBO an impossibility.Generally rcbo is only about 20mm longer than a mcb.
Many many legacy CUs just physically do not have a spare 20mm above the existing MCBs. Older ones often have solid neutral busbars and other obstructions that just make fitting an RCBO an impossibility.
No documented Risk Assessment is required for sockets intended for specific items of equipment.Fair point. Thinking of options to keep cost at a minimum for client and maintain compliance. Utilise the other spare way in the cu, use 2 pole rcbo generally they're the same shape as an mcb? Bottom line is, an rcd is required unless a written risk assessment is provided.
Reply to No RCD on entire installation in the Commercial Electrical Advice area at ElectriciansForums.net
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