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Small enclosure for a relay
NiHaoMike:
--- Quote from: TimFox on August 11, 2020, 01:23:24 pm ---I believe that the safety requirement on wire insulation assumes that the wire insulation touches other insulated wire, and each insulating layer (by itself) should be capable of holding the maximum voltage between the two wires (even if one voltage is much higher than the other), should the other insulation fail.
--- End quote ---
It's more complex than just that since the wiring in a CRT TV set doesn't have to be all rated for 30kV just because there's a 30kV wire for the CRT supply.
Monkeh:
--- Quote from: duckduck on August 05, 2020, 07:35:32 pm ---Plastic mains enclosures use thermoset plastic or they use metal.
--- End quote ---
PVC, ABS, PP, nylon.. can I find some more extremely common thermoplastics used for electrical enclosures? Oh, PC..
https://www.homedepot.com/p/Legrand-Pass-Seymour-Slater-Old-Work-Plastic-1-Gang-Swing-Bracket-Switch-and-Outlet-Box-P116W/304234113 Thermoplastic.
https://www.homedepot.com/p/Carlon-1-Gang-18-cu-in-Old-Work-PVC-Heavy-Wall-Electrical-Switch-and-Outlet-Box-BH118R/100154882 Thermoplastic..
https://www.homedepot.com/p/Serpac-11-8-in-L-x-10-2-in-W-x-5-5-in-H-Polycarbonate-Gray-Hinged-Top-Cabinet-Enclosure-with-Gray-Bottom-I342HL-TGBG/303702897 Thermoplastic...
https://www.homedepot.com/p/Carlon-3-4-in-PVC-Type-X-Round-Junction-Box-with-Cover-E970CDE-CTN/100404094 Thermoplastic....
--- Quote from: NiHaoMike on August 11, 2020, 01:56:11 pm ---
--- Quote from: TimFox on August 11, 2020, 01:23:24 pm ---I believe that the safety requirement on wire insulation assumes that the wire insulation touches other insulated wire, and each insulating layer (by itself) should be capable of holding the maximum voltage between the two wires (even if one voltage is much higher than the other), should the other insulation fail.
--- End quote ---
It's more complex than just that since the wiring in a CRT TV set doesn't have to be all rated for 30kV just because there's a 30kV wire for the CRT supply.
--- End quote ---
The wiring in a CRT TV is not covered under the same standards.
Monkeh:
So to answer the question, yes, you should absolutely replace the tupperware with something suited. For example: https://cpc.farnell.com/spelsberg/33341601/ip55-grey-junction-box-with-terminal/dp/EN85181
There are many sizes, work out what will fit your needs.
TimFox:
--- Quote from: NiHaoMike on August 11, 2020, 01:56:11 pm ---
--- Quote from: TimFox on August 11, 2020, 01:23:24 pm ---I believe that the safety requirement on wire insulation assumes that the wire insulation touches other insulated wire, and each insulating layer (by itself) should be capable of holding the maximum voltage between the two wires (even if one voltage is much higher than the other), should the other insulation fail.
--- End quote ---
It's more complex than just that since the wiring in a CRT TV set doesn't have to be all rated for 30kV just because there's a 30kV wire for the CRT supply.
--- End quote ---
CRT HV wires should not touch other wires ever. Wires in an electrical box can touch each other.
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