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i was told in a 3 phase system if you cross any of the live phases you get a bang how come? i thought live was live and whe you cross live and neutral you get a bang also why do they say 415volts or 230/415v is each phase coming in at 415 volts also would that mean that each circuit would be...

if a run of cable is completely surrounded with insulatio it reduces the cables current crrying capacity to half? any more info on this?

hi has any one dealt with building control, especially in birmingham, regarding electrical work, and what exactly they require, they just keep confusing me , one time they said the installer had to have bs7671 and certify to that level and subit an application which would cost £70 another time...

as far as i know its not allowed to put a shower circuit on a rewirable fuse, the cu in question also has a rcd for the socs and cooker? anyone know for sure?

1.5 t&e , whats the highest rating cb it can take in normal wiring conditions no insulation?

in a conversation with a colleague about TT installation , he said 1) you cant have a TT earth electrode anywhare because of the ground, e.g. dry ground is no good. 2) when there is a a fault in a TT installation the cuurent goe down the earth rod and travels through tghe earth i.e. the...

how do you usually supply a whirlpool bath the amp rating said 2.2? sugestion?

whats the best make consumer unit?

i was in london foriegn sparkies work for £50 a day, and they did a whole house in 2 days including 2nd fix!!, what the hell is going on!!!

hi there does anyone know where it is in teh regs that a shower has to be on a rcd?