Rotary isolator as main switch

[paulthemagpie]

Hi,

im looking to install a main switch in a commerical premises, so for example board changes, ect can be done without taking out the supply fuse.

Would a rotary isolator be suitable?

 

[Pete999]

Hi,

im looking to install a main switch in a commerical premises, so for example board changes, ect can be done without taking out the supply fuse.

Would a rotary isolator be suitable?

Don't see why not as long as it is sized correctly and has a position to allow safe isolation ie lockable

 

[paulthemagpie]

yes it does and the size would be correct, i was just wondering why you dont see these used that much as main point of isolation on installtion when they alot cheaper than some the other main isolator switches you can buy

 

[paulthemagpie]

what would you use as an ideal tp&n isolator when installation as main point of isolation switch

 

[Darkwood]

You need to ensure any switching device is rated for on load switching, many rotary switches out there are not and are just for isolation purposes hence cheaper prices.

 

[Pete999]

what would you use as an ideal tp&n isolator when installation as main point of isolation switch

Not sure what you mean, can you rephrase your post?

 

[Deleted member 72666]

Really! The 100 amp Wylex REC2S ones are only about £15.

 

[paulthemagpie]

Not sure what you mean, can you rephrase your post?

meant what type e.g rotary isolator, ect

 

[paulthemagpie]

Really! The 100 amp Wylex REC2S ones are only about £15.

Yeah they only DP isolators though arnt they i need a TP&N

 

[Pete999]

what would you use as an ideal tp&n isolator when installation as main point of isolation switch

This bit

 

[paulthemagpie]

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This bit

meant when using as main switch

 

[Flanders]

Some rotary isolators dont have much room in them so it could be tight to terminate cables if you are using duble insulated cables

 

[Flanders]

You need to ensure any switching device is rated for on load switching, many rotary switches out there are not and are just for isolation purposes hence cheaper prices.

Yes general use of rotery isolators are form loads rhat have stop start units on them so you can nof turn them on under load

 

[paulthemagpie]

yeah think ill just get the more expensive metal ones and have done with it

 

[davesparks]

yeah think ill just get the more expensive metal ones and have done with it

Get the one which has the correct switching duty, current rating, IP rating and number of poles for your application.