Wiring to a type of street lamp standard

[Hard@it]

Can anyone tell me where I can see a wiring diagram to suit these items controlling a sodium bulb on a street lamp.
Ballast unit
Capacitor
Igniter
Crompton High Pressure Sodium Lucalox Lamp

[matt1e]

mmm i'll not ask why? but
usually

live to ballast then to igniter
igniter to lamp
neutral to both igniter and lamp
power factor capacitor across supply (L & N)

or sometimes if its a three terminal ballast

live to ballast and to igniter
ballast to lamp
ballast to igniter
neutral to both igniter and lamp
power factor capacitor across supply (L & N)

and there are other ways

but have a look at the ballast as the wiring diagram is usually printed on it

[Hard@it]

Hi matt1E, thanks for your reply. There is nothing sinister in this, we are 16 houses in a small estate and are responsible for 4 street lamps and 2 pend lights. Through the 11 years we have changed the occasional bulb but this time it did not work. We then changed the Ballast, Cap., and Igniter, changing conn.for conn., but no reaction!
Ours is as your 3 terminal guide with the Ballast having four terminals and using only the three.
Thanks for your time on this, but all is as you say, will prob. have to bring in the Council man as do not know any other street lighting person.
Cheers Hard@it

[matt1e]

have you checked the photo cell on the top?
also high pressure sodium are very "fussy" about starting when there are corroded or bad connections so remake the ends and especially check the centre pin on the lamp holder it may need pulling up a bit but make sure the power is of and the capacitor is either discharged or disconnected while you do this

[matt1e]

also on thinking make sure you have not bought a lamp with a internal igniter as this will not work and will probably damage the ballast. Its easy to tell ,if you look at the lamp there will be a symbol on it that looks like a triangle it will either have an E or a I in the middle you need to have an E for external igniter
the I stands for Internal and you don't want one of these

[Hard@it]

matt1e, the switching is done by a light sensor, remote from the lights and controls all. The Triangle has an E on the lamps. Your point re the centre pin is a good one and after making sure re capacitor I will check this. Poss tomorrow as we are getting high winds here and it's not the best for up a scaffold. Will let you know re outcome.

[matt1e]

ok good luck tomorrow. I have found this link for you on HPS fault finding if you get stuck just give me a shout.

[matt1e]

oops forgot the link
http://www.venturelighting.com/TechCenter/trou bleshooting.html

[Hard@it]

matt1e - the centre pin appears ok, so have now dismantled scaffold and will ask the council, "expert guy" to sort it.
Appreciate all your help on this, thanks Hard@it .

[Hard@it]

matt1e, just to let you know I got the expert in to check out the controls we fitted. He said that the igniter I was given to replace existing was not suitable for the purpose, the correct one was obtained and worked no bother. so you were right in your assumption that igniter could be wrong - but the triangle was correct - it was the duty of it that was wrong. Cheers and thanks again Hard@it.