Push fit-type fittings

[J4EY]

Hello, Im studying at present and need some assisstance.

If metallic pipework has push type fittings, (which don't provide electrical continuity), what should be done?

a) Leave it as it is
b) Increase pipe size
c) Bridge with brown bonding conductor
d) Bridge with G/Y bonding conductor

Thank-you.

 

[Mark_Burgess]

d) Bridge with G/Y bonding conductor

 

[GT1]

this obviously an exam or test question which you have quoted verbatim, which the answer on the limited options you have is of course D..

However there is more to it than simply bridging every plastic push fit connector with some earth bond..
Hopefuly you are extending your knowledge and gaining understanding as to why the bridging connector is required, but also under which circumstances it isnt..!!

 

[J4EY]

Thank-you for your swift responses.
Based on what I have read, and external further reading I thought the answer was D.
Some of the answers are common sense but your right, its all very well answering the question but its the understanding that matters.

Many thanks again.

Jo.

 

[hp2]

Can someone explain to me why when the question says (which don't provide electrical continuity), I need to bond. Is it just in case there is contact between the pipes? As above i am trying to improve my understanding too. Thanks for any help offered.

 

[Octopus]

The way I read the question is "the push fit connectors which don't provide electrical continuity" and hence the reason the answer is D.

 

[sjm]

If the push fit connector doesn't provide electrical continuity how will the metal pipe on the unbonded side be an extraneous conductive part?

Thought I'd add to my post as I was only being mischievious with the question. The answer they want is d.

 

[pushrod]

As with so many exam questions often the person writing the question has a particular answer in mind and so does not really give the details the question deserves - my answer would be e) give me more information about the function and position of the pipe work!

 

[SimpleSimon]

The scenario is assuming that if a fault was to appear on part of the pipe, although there is no electrical continuity it would still be classed as an extrenous part therefore needs to bridged with all other extrenous parts (the run of the pipe) to provide continuity of bringing them all to the same potential.
One of the more intelligent sparks I'm sure will have a better answer.