[Austin_Yeahbaby]

Hi,

I'm looking to replace a number of GU10 used around the garden/outside of the house with a LED equivalent.

The current bulbs are defined in homeworks as:
Fixture : Downlight
Load Type : Some are INC and some are MLC
Dim : Yes

For the new bulbs is the following ok
Fixture : Downlight
Load Type : NON-DIM
Dim : No
Fixt (W) : 7W
Fixt (Qty) : 10
Total : 70W

Thanks

[kishoo]

Hi,

The biggest problem with homeworks and LED’s is that it requires a minimum load of 40w on a RPM ( ie RPM 4U/ RPM 4E ) otherwise when the circuit / channel is "off" it may flicker slightly.. There is a solution, which is to use a "synthetic load" of which Lutron sell such a device... An alternative is to use a lighting capacitor and get your sparks to wire it in accordingly.. Arcotronics | Passives | Capacitors | Capacitors, Misc | Electrical - Lighting,. as your load will be 70w it should ( hopefully ) not cause issues...

Finally using illumination the circuit must be programmed to be either 100% or 0% with a 0 second face if using dimming modules. If relays are used then its not a problem…


Hope this helps,


Kishoo

[Austin_Yeahbaby]

Thanks for the help Kishoo, It's really appreciated

I think I understand most of what you have mentioned but the plot thickens slightly

I have two circuits running the to the front and back eaves of the house each with over 10 GR10 bulbs. So the plan is to replace them with 7W CFL bulbs as per the following.

Economy Low Energy GU10 7W

I bought one of these as a trial and I'm quite happy with the balance between lower energy usage against visual appearance.

I'm therefore looking to buy another 20 or so to complete the rollout of low energy for these circuits and this looks fine I think because each circuit will have over 70w as a minimum.

The complexity comes in the garden lights, I have three circuits

1 with 4 x 240v GR10 Bulbs
1 with 3 x 12v MR16 bulbs
1 with 4 x 12v MR16 bulbs

if I replace the GR10 bulbs with the same CFL from above this would give me only 28W on the circuit.

I could combine the three circuits onto one but I'm not sure if I can just do a straight swop of the MR16 12V bulbs for something like :

High Performance MR16 LED 5W in Warm White

These are quite expense at over £20 a bulb so it might be easier to change all the MR16 fittings to GR10 240v fittings like the rest and go for the same CFL bulbs all round.

Again, thanks for the help and any comments much appreciated

[kishoo]

Originally Posted by Austin_Yeahbaby

Thanks for the help Kishoo, It's really appreciated

I think I understand most of what you have mentioned but the plot thickens slightly

I have two circuits running the to the front and back eaves of the house each with over 10 GR10 bulbs. So the plan is to replace them with 7W CFL bulbs as per the following.

Economy Low Energy GU10 7W

I bought one of these as a trial and I'm quite happy with the balance between lower energy usage against visual appearance.

I'm therefore looking to buy another 20 or so to complete the rollout of low energy for these circuits and this looks fine I think because each circuit will have over 70w as a minimum.

The complexity comes in the garden lights, I have three circuits

1 with 4 x 240v GR10 Bulbs
1 with 3 x 12v MR16 bulbs
1 with 4 x 12v MR16 bulbs

if I replace the GR10 bulbs with the same CFL from above this would give me only 28W on the circuit.

I would expect to have issues with the load being this low ( 28W )

I could combine the three circuits onto one but I'm not sure if I can just do a straight swop of the MR16 12V bulbs for something like :

High Performance MR16 LED 5W in Warm White

You should be able to do a direct swap over

These are quite expense at over £20 a bulb so it might be easier to change all the MR16 fittings to GR10 240v fittings like the rest and go for the same CFL bulbs all round.
Again, thanks for the help and any comments much appreciated

Hope this helps,

Kishoo