May 26, 2020
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Hi i have a hot tub job coming up and will need a rotary isolator. I need to bring two 6mm swa's (single phase) into its base and will use pirahhna earth nuts. I know these isolators dont have much room inside em, the larger 63a units (at least the ones I can find) have 25mm knockouts so no good. Anyone know of any 63a rotary isoaltors with 20mm knockouts, or no knockouts atall ?

I remember a job from a while ago wiring an isolator for heat curtain/ air-con and had a real real struggle getting the aromours due to lack of space !
 

Europa ones surprisingly. 40a upwards are larger body and quite good quality. Can be drilled to 20 or 25mm
 
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Fitted Europa 63a today with 2 x 5 core 10mm swa. No knockouts, can be drilled to any size. Seemed decent quality, enough room to terminate comfortably
 
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Can be drilled to 20 or 25mm
Ah thanks there matt, I assumed those drillable knockouts were 25mm, I cannot see from the pic and the specs dont say. Thanks I will visit tomorrow and take a look, 😀
 
Fitted Europa 63a today with 2 x 5 core 10mm swa. No knockouts, can be drilled to any size. Seemed decent quality, enough room to terminate comfortably
Thanks Matthew, where did you get the Europa isolators from ? The post before yours (#2) mentions europa isolators but the associated pic shows knockouts ??? 🥺
 
I had another one in the van so I attached a picture. They are not knockouts, more of a template for 20/25/32mm. Can be drilled to any size. We don't have toolstation here it's from greenville electrical
 

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I had another one in the van so I attached a picture. They are not knockouts, more of a template for 20/25/32mm. Can be drilled to any size. We don't have toolstation here it's from greenville electrical
Okay great stuff thanks
 
Another vote for the Europa ones, ample amount of room in them and they don't have knockouts, they need to be drilled
 
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If you're a qualified, trainee, or retired electrician - Which country is it that your work will be / is / was aimed at?
United Kingdom
What type of forum member are you?
Practising Electrician (Qualified - Domestic or Commercial etc)

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Rotary Isolator with enough space
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UK Electrical Forum
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Eric12,
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