I have two roof vent actuators in my conservatory and need to extend their leads to the switch. The actuators currently have 1 meter of 3 core, 0.75mm flex (no earth) brown, black, grey (made in Italy) which I need to extend by about 3 meters to a 10A retractable switch. They are double-insulated and rated at 55W (loaded).
I cannot open the actuators to replace the flex without invalidating their guarantees. Also, I cannot find 3 core (no earth) flex in the UK.
Can I extend the leads by crimping to 0.75mm 4 core flex using red butt-crimps? I think these are usually used for T&E cables between 1mm and 1.5mm and my flex is 0.75mm multi-core. However, I could overlap each end so that the diameter was increased to 1.5mm. Note also that the joints will be concealed in a conduit of the main beam (wood) and there is not much room for anything else.
Also, is there a convention for colour of the heatshrink I should use?
Thanks for any advice
I cannot open the actuators to replace the flex without invalidating their guarantees. Also, I cannot find 3 core (no earth) flex in the UK.
Can I extend the leads by crimping to 0.75mm 4 core flex using red butt-crimps? I think these are usually used for T&E cables between 1mm and 1.5mm and my flex is 0.75mm multi-core. However, I could overlap each end so that the diameter was increased to 1.5mm. Note also that the joints will be concealed in a conduit of the main beam (wood) and there is not much room for anything else.
Also, is there a convention for colour of the heatshrink I should use?
Thanks for any advice