Using double pole RCD

OP

J

Jako13!

-

Joined

May 17, 2018

Messages

213

Reaction score

27

Location

London

• Mar 24, 2021

• #2

Jako13! said:

Is there anything preventing us from using these type of RCDs for a 55-0-55 circuit?

the picture shows the original set up.

Click to expand...

Thanks guys in advance

 

Upvote 0 Downvote

snowhead

-

Mentor

Arms

V.Nearly Esteemed

Joined

Jan 4, 2012

Messages

5,742

Reaction score

6,131

Location

Mildlands

• Mar 24, 2021

• #3

Have you looked closely at what the original setup actually is, that you are suggesting replacing with just an RCD?

 

Upvote 0 Downvote

OP

J

Jako13!

-

Joined

May 17, 2018

Messages

213

Reaction score

27

Location

London

• Mar 24, 2021

• #4

snowhead said:

Have you looked closely at what the original setup actually is, that you are suggesting replacing with just an RCD?

Click to expand...

Yeah it’s trace heating on pipe work

 

Upvote 0 Downvote

P

pc1966

Arms

V.Nearly Esteemed

Joined

Mar 6, 2020

Messages

9,977

Reaction score

12,530

Location

Dundee

• Mar 24, 2021

• #5

You would have the check the new RCD specification works on 110V as well, the trip electronics might not function if seriously under-volt.

 

Upvote 0 Downvote

hasel5

-

Arms

Joined

Sep 4, 2008

Messages

688

Reaction score

406

Location

Southampton

• Mar 24, 2021

• #6

Thats a double pole MCB and a shunt RCD so no the above is not compatible

 

Upvote 0 Downvote

westward10

Staff member

Admin

Esteemed

Supporter

Joined

Jul 15, 2016

Messages

22,246

Reaction score

28,397

Location

Northamptonshire

• Mar 24, 2021

• #7

hasel5 said:

Thats a double pole MCB and a shunt RCD so no the above is not compatible

Click to expand...

Does the same thing though.

 

Upvote 0 Downvote

hasel5

-

Arms

Joined

Sep 4, 2008

Messages

688

Reaction score

406

Location

Southampton

• Mar 24, 2021

• #8

A rcbo would not that RCD

 

Upvote 0 Downvote

westward10

Staff member

Admin

Esteemed

Supporter

Joined

Jul 15, 2016

Messages

22,246

Reaction score

28,397

Location

Northamptonshire

• Mar 24, 2021

• #9

hasel5 said:

A rcbo would not that RCD

Click to expand...

Sorry my error wasn't paying attention ?

 

Upvote 0 Downvote

Lucien Nunes

-

Mentor

Esteemed

Arms

Joined

Jul 2, 2013

Messages

6,778

Reaction score

14,809

Location

London for the time being

• Mar 24, 2021

• #10

OP perhaps you can clarify. Are you proposing to use the RCD to replace the Vigi residual tripping actuator but leave the original DP MCB in service, or what?

 

Upvote 0 Downvote

OP

J

Jako13!

-

Joined

May 17, 2018

Messages

213

Reaction score

27

Location

London

• Mar 25, 2021

• #11

I suppose my question wasn’t clearly explained sorry for my mistake. The question I really wanted to ask is really other than the fact the RCD in the photo is mechanical interlocked with the D1 breaker would the RCD function for a 55-0-55 supply. I know normally we’d L-230v
N-0v Also am I being silly here but if you could get a RCBO that size could that be fitted? Also what is the reason for this kind of set up overload protection and additional protection?

 

Upvote 0 Downvote

i=p/u

-

Arms

Joined

Dec 9, 2010

Messages

7,520

Reaction score

816

Location

Northern Ireland

• Mar 25, 2021

• #12

I remmber testing them in 110v boards for controlling 110v sockets in pumping stations and the likes..

 

Upvote 0 Downvote