Replace Electronic Ballast in light fitting

[edezzie]

I need to replace the Electronic Ballast in the light fitting shown below as having already replaced the T5 tubes the light is still not working so I assume it's the Ballast.

Light Fitting

• edezzie
• 2 Jan 2012
• 1

Electronic Ballast

• edezzie
• 2 Jan 2012
• 1

I bought the Ballast below to replace it with

Electronic Ballast

• edezzie
• 2 Jan 2012
• 1

Specs for existing 'Robus' Ballast are:
Input: 220~240V/50Hz 0.22A
Power: 2 x 13W

Specs for new 'Harvard' Ballast are:
Input: 220~240V/50Hz 0.12A(max)
Power: 2 x 6-14W

The problem is that the new Ballast has only 6 output wire points (numbered 6,1,2,3,4,5) where as the existing Ballast has 8 (numbered 1,2,3,4,5,6,7,8 )
Also I note the new Ballast has max 0.12A and the existing has 0.22A.
Will this work and if so how would I align the wires?

Thanks in advance to anyone who can help.

 

[Spark123]

The wiring diagram is on the ballast unit, the only difference is that one of the wires connects between the two lamps as opposed to returning back to the ballast unit.
To link the two wires you can either join them in terminal block or you may be able to extract the wire from one of the lamp holders and wire the link directly between the two.

 

[ericmark]

Using numbers on ballast old to new in following order.
1 = 1
2 = 2
3 = 6
4 and 5 connect together not to ballast
6 = 5
7 = 3
8 = 4
Note numbers are not in order.

 

[edezzie]

Thank you for your help

So change it from the current:

Untitled

• edezzie
• 2 Jan 2012
• 1

to this:

Untitled

• edezzie
• 2 Jan 2012
• 1

 

[Spark123]

Yep, that will be OK

 

[333rocky333]

Although the new ballast may pick up its earth via the metal casing its sometimes advisable to also fit an additional flylead to the earth terminal

 

[edezzie]

This worked perfect!
Thanks guys.

 

[xPeterJx]

Hi.

Like the guy who started this thread I need to replace a ballast but can only find them with 6 out as appose to the 8 on my current. Can you please tell me the right way to rewire it please?

Thank you

Old Ballast:

Untitled

• xPeterJx
• 13 Apr 2013
• 1

New Ballast

Untitled

• xPeterJx
• 13 Apr 2013
• 1

 

[mfarrow]

Wire it as per your original, but connect 7 and 8, to 1 and 2. So you should have two wires at terminal one, and two wires at terminal 2.

Note you'll need to use some connector block as you won't fit 2 wires into the ballast terminals.

 

[ban-all-sheds]

Don't understand the problem.

You have lamps with two terminals at each end, and a diagram showing you which terminals on the ballast to connect all of the 8-in-total lamp terminals.

So why do you need to be told? What can anybody tell you that you don't already know from the diagram?

 

[xPeterJx]

Don't understand the problem.

You have lamps with two terminals at each end, and a diagram showing you which terminals on the ballast to connect all of the 8-in-total lamp terminals.

So why do you need to be told? What can anybody tell you that you don't already know from the diagram?

I have never wired a ballast before, until about 3 weeks ago I didn't even know what one was. I genuinely find the diagrams confusing and I've got 8 wires that need to fit into 6 holes so I thought I'd be best to ask than risking it and damaging anything.
Not quite sure why I've felt the need to explain myself but there you go!

 

[xPeterJx]

Wire it as per your original, but connect 7 and 8, to 1 and 2. So you should have two wires at terminal one, and two wires at terminal 2.

Note you'll need to use some connector block as you won't fit 2 wires into the ballast terminals.

So it'll be
1,7 = 1
2,8 = 2?

Thanks for your help.

 

[AllowAllGarages]

Don't understand the problem.

You have lamps with two terminals at each end, and a diagram showing you which terminals on the ballast to connect all of the 8-in-total lamp terminals.

So why do you need to be told? What can anybody tell you that you don't already know from the diagram?

He's just after some advice since he's never done it before, which some people are happy to give.

 

[streetlighter]

I remember being an apprentice and given the task of replacing a Philips 135 watt SOX ballast, I asked how do I wire this and was told simply to follow the "f**king" diagram on the front of it ! I soone learned how to wire them.
I will admit tho occasionally I get a little confused and have to draw it out on paper.
I've also had Electricians work with me that can't fathom out how to wire a 35 SOX tray

 

[mfarrow]

So it'll be
1,7 = 1
2,8 = 2?

Yes