A bit warm! 
1 x 5kW GE CP29 tungsten halogen lamp at at full power.
Very efficient heater that wastes some energy as light! 

Interestingly although this lamp is marked as 240v, it actually reaches its rated power at 230v.

This thing pulls enormous current when cold as the cold filament resistance is only 0.69 ohms! I brought it up slowly on the variac and it was pulling well over 15 amps initially with just a few volts going through it!
Variac done well considering it's only rated for 15 amps. It made a few noises when passing through the mid point of the voltage range but when at near full it was almost silent with no complaints at all.

A bit warm!

1 x 5kW GE CP29 tungsten halogen lamp at at full power.
Very efficient heater that wastes some energy as light!

Interestingly although this lamp is marked as 240v, it actually reaches its rated power at 230v.

This thing pulls enormous current when cold as the cold filament resistance is only 0.69 ohms! I brought it up slowly on the variac and it was pulling well over 15 amps initially with just a few volts going through it!
Variac done well considering it's only rated for 15 amps. It made a few noises when passing through the mid point of the voltage range but when at near full it was almost silent with no complaints at all.

1000widoe.jpg 387A2244.jpg 387A5297.jpg 387A9086.JPG DPP00000478.jpg
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Filename:387A5297.jpg
Album name:FrontSideBus / Incandescent
Manufacturer:GE
Type/Model:CP29
Wattage:5000w
Filesize:2375 KiB
Date added:10 Feb, 2024
Dimensions:1365 x 2048 pixels
Displayed:18 times
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Danny   [10 Feb, 2024 at 10:08 PM]
Nice beast, i have one of these that i have never lit!
FrontSideBus   [12 Feb, 2024 at 06:21 PM]
I'd be hesitant of firing one of these up directly off the mains! I don't know if the surge current would take out MCB's or the main fuse!!!
Beta 5   [12 Feb, 2024 at 10:09 PM]
I guess it would be no worse than a dead short across the breaker, which shouldn't take out the main fuse? You'd probably want a C or D type breaker though if it's that bad!

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