ct on live only(usually), assuming ac supply as ring final circuit is mentioned.
If dc, different kettle of fish, hall sensors are probably the best option.
ONLY true in theoretical and linear resistive circuits,
in the real world the resistance of the bulb is dependent on the temperature of the filament which varies with voltage
Is the fitting damaged or is it that you cannot source a bulb that is smaller than SES?
Edison screw bulbs come in common sizes, E40, E27, E14, E12, E10 and E5
also bar steward ized sizes of 39, 26, 17, 11 and maybe others
IF, your talking powering by pp3 9v battery at 500mah,
then telephone wire at 0.5 / 0.6mm is adequate, volt drop less than 0.1v at a metre,
DOWNSIDE is hf vibration over a prolonged time, being single strand it's a killer if unsupported
0.6mm better as it's also perfect for 32A rewireable fuses
If, "IF", it is a 4 position switch, off, on, sprung 1st, sprung 2nd,
then your teminals will be: power, ign((gauges etc), flame start(heater plugs), starter solenoid
I wonder, one of cillit bangs ingredients is also phosphoric acid, and if these guys use it, it must be good
https://www.neimagazine.com/news/newshousehold-cleaner-helps-dounreay-decommissioning
single curve or flat lens protectors easily replicated with scissors or craft knife,
use Laser OHP "Clear" Acetate sheets,
you can get multiple external and internal from an A4 sheet depending on the size.
Been using them for years, could never readily find the right size and rather not pay...
your choice has less to do with the torch and more to do with whether a gas lens or collet body is fitted,
this might help, https://blog.binzel-abicor.com/binzel-basics-everything-you-need-to-know-about-tig-torches
As CO2 is stored in cylinder as part liquid and part gas, and typically sold by weight, calculations can become complex.
For simplicity, it is easier to remember that 1kg ≈ 550 Litre of gas. Typical bottle a.t 6.35kg ≈ 3.5m3 (3500L)
Job costings become much easier, if you pay £17.50 for your...
Heavy industry and marine use DC on aluminium, years ago when the Seacat was first operating had interesting chat with onboard engineer regarding construction. Google throws up this:-
https://weldingmastermind.com/11-tips-for-tig-welding-aluminum-with-dc/
If your building your own trailer/caravan tester, dont forget include a trailing earth with croc clip to attach to the chassis. Trailer "light board" circuits are usually independant of any chassis earth, any circuit short to chassis will only be a problem when the hitch is coupled to a vehicle.
***update using £55 as gas price
eBay Doncaster 2.5p/L NO DEPOSIT NO RENTAL
Hobby (9 Litre) 4.94p/L + Deposit etc...
***SGS 2.75p/L + Deposit etc...
rfg 3.45p/L + Deposit etc...
Chorley 2.00p/L + Deposit etc...
leaves one to wonder if the agent was simply double billing, covid profiteering or...
interesting that distributors want to charge vat on deposit, from HMRC
Returnable deposits
You may ask your customers to pay a deposit when they hire goods from you. You do not have to account for VAT if the deposit is either:
refunded in full to the customer when they return the goods safely...