SP - single-pole, DP - double pole. What does this mean?
- Thread starter doh.....
- Start date
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Single pole switches disconnect the phase conductor only, while double pole disconnects both phase and neutral.
There is not requirement that you use DP switches but I would recommend it anyway.
*bah!*
There is not requirement that you use DP switches but I would recommend it anyway.
*bah!*
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yes, DP is preferable
However, more important still is buying a decent brand.
Crabtree, MK, MEM are all good.
Cheap ones are usually cheap for a reason.
What do you have in mind, and how many? Electrical wholesalers are often cheaper if you are buying a bunch.
Fancy brass and chrome ones are always a lot more more expensive than white.
However, more important still is buying a decent brand.
Crabtree, MK, MEM are all good.
Cheap ones are usually cheap for a reason.
What do you have in mind, and how many? Electrical wholesalers are often cheaper if you are buying a bunch.
Fancy brass and chrome ones are always a lot more more expensive than white.
festa said:
I understand why you should say that, but you're wrong, removeing the plug is allowed as isolation and breaks both poles, the switch is just a functional switch (although some of the newer ones might be approved as isolators... 3mm separatation and all that)
Hi Adam..
Yes a socket outlet can be isolated by switching off and removing the plug but when you have an FCU inline how can you disconnect the neutral then?
Just check OSG page 34 note(ii) for me and let me know im not misunderstanding it as whenever i carry out work on an installation forming part of a T.T earthing system i always replace/install double pole switchgear.
Yes a socket outlet can be isolated by switching off and removing the plug but when you have an FCU inline how can you disconnect the neutral then?
Just check OSG page 34 note(ii) for me and let me know im not misunderstanding it as whenever i carry out work on an installation forming part of a T.T earthing system i always replace/install double pole switchgear.
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