Good Afternoon All,
Although I don't recall ever coming across the above situation myself, I have heard/read lately about the above not been permitted.
I was reading an old On-Site Guide (probably about 20 years old) where in a table covering Final Circuits for BS 1363 socket outlets it states the protective device for 2.5 mm Ring Finals can be any type, for a 30/32 amp Radial Final Circuit wired in 4 mm cable a cartridge fuse or circuit breaker must be used.
However, and this is what I am asking about, for a 20 Amp Radial Final Circuit wired in 2.5 mm cable it states that the protective device can be any type (which to me would indicate a 20 amp 3036 is acceptable, although, I understand, not a common 3036 rating to come across).
I have seen the exact thing above been said in several (fairly old) DIY books.
Regarding the above, I understand 3036 fuses can sometimes take double the rating to blow, so thinking about it, 40 amps to blow a 20 amp 3036 would be a big strain on 2.5 mm cable.
Regards
Although I don't recall ever coming across the above situation myself, I have heard/read lately about the above not been permitted.
I was reading an old On-Site Guide (probably about 20 years old) where in a table covering Final Circuits for BS 1363 socket outlets it states the protective device for 2.5 mm Ring Finals can be any type, for a 30/32 amp Radial Final Circuit wired in 4 mm cable a cartridge fuse or circuit breaker must be used.
However, and this is what I am asking about, for a 20 Amp Radial Final Circuit wired in 2.5 mm cable it states that the protective device can be any type (which to me would indicate a 20 amp 3036 is acceptable, although, I understand, not a common 3036 rating to come across).
I have seen the exact thing above been said in several (fairly old) DIY books.
Regarding the above, I understand 3036 fuses can sometimes take double the rating to blow, so thinking about it, 40 amps to blow a 20 amp 3036 would be a big strain on 2.5 mm cable.
Regards