Key switch

[ChrisElectrical88]

Hey guys.

just looking for some advice to back up what I have told one of the lads. He wired an emergency lighting circuit with a FP coming into the dist board. He took this FP through the board into the key switch mounted on the side of it then a FP back into the board through the bush and coupler. Still following. Probably not! Anyway apart from pointlessly taking the neutral into the switch he connected the lives through the L1 terminal and the neutral through the L2.

i made him disconnect the neutrals as it was a L terminal as they would not be correctly identified. Also he didn't see the reason why the switch didn't need a neutral.

Point anyway way after this ridiculous post is, would you connect a neutral into a L terminal?

 

[Dan the spark]

Was it a double pole key switch? Cos they are normally labelled L & N terminals

 

[ChrisElectrical88]

2 L1 and 2 L2 terminations, if it was a N termination like every double pole switch iv ever seen it wouldn't have been a issue. Iv even starting to question it been an intermediate key switch.

 

[Dan the spark]

That's what I was about to suggest

 

[tazz]

Answer No, neutrals linked, and line in to com, and line out to L1......But why have you wired the installation in FP200..??

 

[Dan the spark]

Maybe it was spec'd fp

 

[shanky887614]

Answer No, neutrals linked, and line in to com, and line out to L1......But why have you wired the installation in FP200..??

waste of money using fp for emergency lights, they have battery backups.

 

[ChrisElectrical88]

Specified indeed!

 

[tazz]

Specified indeed!

out of interest, For what reason was it specified, and what type of property

 

[ChrisElectrical88]

It was a plant room in a factory.

 

[davesparks]

That's a location, not a reason for installing FP, you'd normally expect to see steel pipe in a factory rather than FP

 

[tazz]

Has he specified this in metal trunking along with singles for lighting & power, or are all other cables T&E..?

 

[shanky887614]

Has he specified this in metal trunking along with singles for lighting & power, or are all other cables T&E..?

im not joing ive been on a site before where everything was wired in fp, sockets, lights etc.

only difference between alarms and everything else was colour

 

[tazz]

im not joing ive been on a site before where everything was wired in fp, sockets, lights etc.

only difference between alarms and everything else was colour

Then there`s the heath & safety aspect, were containment means just that. Contained securely in the event of fire, and not just clip or srewed to walls

 

[shanky887614]

Then there`s the heath & safety aspect, were containment means just that. Contained securely in the event of fire, and not just clip or srewed to walls

everything was on basket then drops down in either tray or conduit with metal tywraps (no idea why the use of metal tywraps on plastic conduit)

 

[tazz]

Every Specification I have come across, for commercial, schools and offices have all been the same.
Tray for armored, Basket for data/fire/security and box trunking using singles for power lighting. All cables on tray/basket supported by metal ties every 1m, plastic ties every 1/3m. And all drops or surface plant rooms galv conduit. Whole idea here, is to prevent a rats nest dropping on people escaping from a building and firefighter entering a building.Hence the metal ties holding cable on tray/basket.