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I will get a hf ballast fitting when the tube fails then. I will keep off led replacements for now anyway. Thanks for all the help and advice on the way. All the best thyristor44

Interesting. Any more light from a 58 watt hf ballast vs standard inductive ballast.

I might be going off replacing flourescent with led. One problem I have is the choke in my fitting is from a 6 foot fitting as the original failed years ago and that was all I had. I think the ballast choke limits the tube current so I am overdriving my tube anyway. I have a 60ish watt fitting...

It is an old fitting, in those days they were 5 foot and 80 watt, 1.5 inches in diameter tube, the newer ones dropped the wattage to 65 watt. So how many lumens would the 80 watt tube give. It has a starter but its only 65watt so fails quite often. The ballast choke is in series with the tube...

Thanks, what does the led starter do, and do I have to remove the choke and capacitor from original fitting.

Hello I have had a 5 foot 80 watt flourescent fitting in the kitchen for ages. Its time to chang to led strip so what length of led will give me about the same equivalent light. Warm white . Thanks thyristor44 Solved now thanks for all the help and advice.

Yes they are thin swo I will give it a go. Thanks for all the help mates. All the best thyristor44

Thanks noseall That gives me some idea.

There are no joists, max height is only 2m, its a lean to. Slope is 20 degrees and clear span is 2.4m. Thanks

Hello I am slating an outhouse with slates, 10 x 18 thin blue slates. The span of the building is 3m to the outside. It is very low but is used for access to a garage so headroom is at a premium. I have some 4" x 4" spars I want to use but the question is how far apart should they be. I intend...

It is supplying only one rad and that is not very big so I will give it a go at 10mm. Thanks for all your helps mates, it makes things alot easier. All the best. thyristor44

I might as well push my luck, 22mm is on a 35 foot run from boiler so would I get away with an 8 foot run of 10mm to the rad from the 22mm. There is a 3 inch step in the floor which I will have to follow and 10mm will easily bend.

I will sleeve it as its loose fill with stone bits, have had problems before with bits falling and blocking the hole and had to fill hole with expanding foam and drill that.

Hello I am adding another rad to my system. It goes 22mm to very near the point but I wondered if I could use 10mm for the last meter or so as I need to drill through a 2 foot stone wall and 10mm is definately easier. Thanks thyristor44

Hello I am going to dryline a cold wall with 100mm of foam then plasterboard and wondered if I need to leave a gap and if I need a membrane and what sort. Thanks thyristor44

Thats the easiest solution for me. Thanks for the help you have given me and all the other help too. Nice forum. All the best. thyristor44

That makes it plain. Last thing, if I move the supply from the outlet port to the inlet port does it need recalibrating.

The arrow on the pump is circular showing the direction of rotation and on the side at the top, the ports are on the bottom of the pump, no arrows.

To be exact which port do you call into the pump and would it need recommissioning after the feed is moved.

Yes there is a metal bung, also a small grub screw with a point on in the remaining parts. The job he did was cash in hand and he was to come back when the auto bypass was fitted to sign it off. I have tried to contact him for over two weeks now but no luck, think he is bumping my calls now. He...